Device for training insertion or removal of contact lens

Abstract

To provide a device for training insertion or removal of a contact lens which allows a user to have a more practical training of inserting or removing a contact lens.SOLUTION: A device 10 for training insertion or removal of a contact lens includes: a face model 12 simulating the face of a person; an eyelid model 16 attached to an orbit part 24 opening in the front surface of the face model 12; and an eyeball model 14 inserted in the orbit part 24 of the face model 12, the eyeball model being arranged between an upper eyelid part 76 and a lower eyelid part 78 of the eyelid model 16. The direction of the axis of vision of the eyeball model 14 can be relatively changed with respect to the face model 12.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a contact lens wearing / removal training device used for training how to properly wear and remove contact lenses. [Background technology]

[0002] Proper insertion and removal of contact lenses onto the human eye requires skill, and since inserting and removing contact lenses onto the eyes of another person is particularly difficult, anyone who will be inserting and removing contact lenses onto the eyes of another person must undergo sufficient training beforehand.

[0003] In addition, in recent years, the use of contact lenses (orthokeratology lenses) for young people has been increasing in order to suppress the progression of myopia, and in such cases, parents often put contact lenses on and take them off their young children. In many cases, parents have no experience putting contact lenses on or taking them off someone else's eyes, so they need to be given sufficient explanation and practice before actually putting contact lenses on and taking them off their children's eyes.

[0004] Such training on putting on and taking off contact lenses on another person's eye is carried out using a model eye as disclosed in, for example, JP 2012-078603 A (Patent Document 1). The eye model in Patent Document 1 has a structure in which a model eyeball that imitates a human eyeball is fitted inside a model eyelid made of a partially spherical shell-shaped base that imitates the eyelid of the human eye. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2012-078603 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, the eye model in Patent Document 1 has a shape etc. that is designed to help users easily understand the mechanism of putting on and taking off hard contact lenses, etc., and there are some parts that deviate from the shape etc. of a real human eye. Therefore, training on putting on and taking off contact lenses using this eye model differs in some parts from putting on and taking off contact lenses on a real human eye, and there was a need for more practical training on putting on and taking off contact lenses.

[0007] An object of the present invention is to provide a contact lens putting on and taking off training device that enables more practical training in putting on and taking off contact lenses. [Means for solving the problem]

[0008] The following describes preferred embodiments for understanding the present invention, but the embodiments described below are merely illustrative and may be combined with one another as appropriate, and the multiple components described in each embodiment may be recognized and used independently as far as possible, and may also be combined with any of the components described in another embodiment as appropriate. As a result, the present invention is not limited to the embodiments described below, and various other embodiments may be realized.

[0009] The first aspect is a contact lens putting on and taking off training device comprising a facial model imitating a human face, an eyelid model attached to an eye socket portion opening on the front of the facial model, and an eyeball model inserted into the eye socket portion of the facial model and positioned between the upper eyelid portion and lower eyelid portion of the eyelid model, wherein the visual axis direction of the eyeball model can be changed relative to the facial model.

[0010] According to a contact lens putting-on and taking-off training device constructed in accordance with the present embodiment, the visual axis direction of the eyeball can be changed, so that training for putting on and taking off the contact lens can be performed with the eyeball in a direction that is close to the actual state in which the contact lens will be put on and taken off, making more practical training possible.

[0011] A second aspect is the contact lens putting on and taking off training device according to the first aspect, wherein the visual axis direction of the eyeball model can be changed in the vertical direction.

[0012] Since the actual putting on and taking off of contact lenses is primarily performed by moving the visual axis of the eyeball up and down, a contact lens putting on and taking off training device constructed in accordance with this embodiment can provide training in a state close to when actually putting on and taking off contact lenses.

[0013] In a third aspect, in the contact lens putting on and taking off training device described in the first or second aspect, an operating lever extending rearward is attached to the eye model, and the visual axis direction of the eye model can be changed and set by tilting the operating lever.

[0014] According to the contact lens putting on and taking off training device constructed according to this embodiment, the visual axis direction of the eyeball model can be easily changed by operating the operating lever.

[0015] In a fourth aspect, in the contact lens putting on and taking off training device described in the third aspect, a holding member that holds the eye model within the eye socket portion of the face model is attached to the face model, and a slit is formed in the holding member through which the operating lever is inserted to allow tilting of the operating lever around the eye model, and the visual axis direction of the eye model can be changed and set by tilting the operating lever allowed by the slit.

[0016] According to the contact lens putting on and taking off training device constructed according to this aspect, the eye model is held in the eye socket of the face model by the holding member, so that the position of the eye model within the eye socket is stabilized.

[0017] Furthermore, since the moving direction of the operating lever is guided by the slit formed in the holding member, the tilt direction of the visual axis of the eye model is limited. Therefore, the orientation of the eye model can be easily controlled by the operating lever. In particular, since the guiding effect for guiding the tilt direction of the operating lever is exerted by the holding member for holding the eye model in the eye socket, guidance of the operating lever can be achieved with a small number of parts.

[0018] A fifth aspect is the contact lens putting on and taking off training device according to the fourth aspect, wherein the holding member is made of an elastic material.

[0019] According to the contact lens putting on and taking off training device constructed according to this embodiment, the holding member is elastically deformable, so that the contact lens can be easily put on and taken off from the face model and the eyeball model. Also, by providing a slit in the elastic holding member, noise and jamming are unlikely to occur when the operating lever moves within the slit.

[0020] In a sixth aspect, in the contact lens putting on and taking off training device described in the fourth or fifth aspect, an opening is formed in the retaining member which extends laterally from the slit and circumferentially divides the outer peripheral surface of the retaining member, and when the retaining member is in a standalone state not attached to the facial model, the operating lever can be inserted into the slit from the side of the retaining member through the opening.

[0021] According to the contact lens putting on and taking off training device constructed according to this aspect, the operating lever can be inserted into the slit from the side of the holding member through the open part of the holding member, making it easy to insert the operating lever into the slit. In particular, even when both ends of the operating lever have a larger diameter than the intermediate part, such as when an eyeball model is attached to one end of the operating lever and a grip part for gripping the operating lever is provided at the other end, it is easy to insert the intermediate part of the operating lever into the slit.

[0022] In a seventh aspect, in the contact lens putting on and taking off training device described in the sixth aspect, the orbital portion of the facial model is provided with a positioning protrusion that is inserted into the open portion of the holding member to position the holding member circumferentially relative to the facial model.

[0023] With a contact lens insertion and removal training device constructed in accordance with this embodiment, the positioning protrusion of the facial model is inserted into the open portion of the holding member, and the opening for inserting the operating lever into the slit can be utilized to easily position the holding member relative to the facial model in the circumferential direction of the eye socket portion.

[0024] In an eighth aspect, in a contact lens putting on and taking off training device described in any one of the fourth to seventh aspects, the holding member has an eyeball holding portion protruding forward which is inserted radially between the inner surface of the eye socket portion of the face model and the eyeball model, the inner surface of the eyeball holding portion being a tapered eyeball seating surface which widens towards the protruding tip, and the eyeball seating surface being superimposed on the rear half of the eyeball model.

[0025] In the contact lens putting on and taking off training device constructed according to this aspect, the eyeball holding part of the holding member is inserted radially between the eyeball model and the inner peripheral surface of the eye socket part, thereby positioning the eyeball model radially within the eye socket part. Also, the tapered eyeball seating surface of the eyeball holding part is superimposed on the rear half of the eyeball model, thereby restricting rearward movement of the eyeball model relative to the holding member, and the position of the eyeball model in the front-to-rear direction within the eye socket part is defined on the rear side.

[0026] In addition, since the eyeball seating surface of the eyeball holding part is tapered, when the visual axis direction of the eyeball model is changed, the eyeball model slides while being guided by the eyeball seating surface, so that the visual axis direction of the eyeball model can be changed stably.

[0027] A ninth aspect is a contact lens putting on and taking off training device described in any one of the fourth to eighth aspects, wherein the width dimension of the slit is made smaller than the diameter of the portion of the operating lever that is inserted into the slit, and the slit is provided with a lever holding portion whose width dimension is partially increased so that the operating lever can be held.

[0028] According to the contact lens putting on and taking off training device constructed according to this aspect, the operating lever can be easily held in a state where it is inserted into the lever holding part, so that the visual axis direction of the eyeball model can be easily held in a specific direction. Specifically, for example, if the visual axis direction of the eyeball model can be easily held in a state where it is facing upward or downward by the lever holding part, training in putting on and taking off the contact lens can be performed by the eyeball model whose visual axis direction is close to the actual state of putting on and taking off the contact lens.

[0029] A tenth aspect is a contact lens putting on and taking off training device described in any one of the first to ninth aspects, wherein the eyelid model is a separate part from the facial model and is inserted into the eye socket portion of the facial model, and the eyeball model is a separate part from the facial model and is inserted into the eye socket portion of the facial model.

[0030] According to a contact lens putting on and taking off training device constructed in accordance with this embodiment, the hardness, tactile feel, etc. required for the eyelid model, eyeball model, and face model can be set individually, thereby providing a high-performance training device.

[0031] An eleventh aspect is a contact lens putting on and taking off training device described in any one of the first to tenth aspects, wherein a gap is provided between the lower eyelid portion of the eyelid model and the eyeball model, and the size of the gap in the central portion of the lower eyelid portion is 0.5 mm or more and 2.5 mm or less.

[0032] In the contact lens putting on and taking off training device constructed according to this embodiment, a gap is provided between the lower eyelid portion of the eyelid model and the eyeball model, which makes it easy for the contact lens to get stuck in the gap, and the contact lens is effectively prevented from getting stuck in the gap by pressing the lower eyelid portion. Therefore, the user of the contact lens putting on and taking off training device can effectively train how to press the lower eyelid portion, which is important when removing contact lenses.

[0033] A twelfth aspect is a contact lens putting on and taking off training device comprising a facial model imitating a human face, an eyelid model attached to an eye socket portion opening on the front of the facial model, and an eyeball model inserted into the eye socket portion of the facial model and positioned between the upper eyelid portion and lower eyelid portion of the eyelid model, wherein the eyelid model is a separate part from the facial model and inserted into the eye socket portion of the facial model, and the eyeball model is a separate part from the facial model and inserted into the eye socket portion of the facial model.

[0034] According to a contact lens putting on and taking off training device constructed in accordance with this embodiment, the hardness, tactile feel, etc. required for the eyelid model, eyeball model, and face model can be set individually, thereby providing a high-performance training device.

[0035] A thirteenth aspect of the present invention is the contact lens putting on and taking off training device according to the twelfth aspect, wherein the eyeball model is harder than the eyelid model.

[0036] According to the contact lens wearing / removal training device constructed according to this embodiment, it is possible to provide a wearing / removal training device that includes an eyelid model and an eyeball model that are close to the relationship in hardness between the eyelid and the eyeball of an actual human eye. As a result, the amount of deformation caused by pushing the eyelid model toward the eyeball is limited by the eyeball model, so that the eyelid model and the eyeball model can be brought into close contact with each other by pushing the eyelid model toward the eyeball model, just like an actual human eye, and the contact lens can be prevented from getting into the gap between the eyelid model and the eyeball model. This allows a user of the contact lens wearing / removal training device to perform more practical training in wearing and removing contact lenses.

[0037] A fourteenth aspect of the present invention is the contact lens putting on and taking off training device according to the thirteenth aspect, wherein the eyeball model is softer than the face model.

[0038] According to the contact lens putting on and taking off training device constructed according to this embodiment, the eyeball model is set to have the same degree of flexibility as a human eyeball, while the unevenness of the facial surface that hinders putting on and taking off a contact lens can be reproduced by a harder facial model. In particular, since the facial model does not necessarily require the flexibility of an actual face in contact lens putting on and taking off training, by making the facial model sufficiently hard, durability and shape stability can be ensured, and the unevenness of the facial surface that hinders putting on and taking off a contact lens can be more emphasized.

[0039] In a fifteenth aspect, in the contact lens putting on and taking off training device described in the fourteenth aspect, the eye socket portion of the face model is integrally formed with a receiving portion that protrudes in the vertical direction from the inner surface of the eye socket portion on both the upper and lower sides of the eyeball model.

[0040] With a contact lens putting on and taking off training device constructed according to this embodiment, when training in putting on and taking off contact lenses, for example, when pushing the lower eyelid portion into the eye socket with a finger or sliding the upper eyelid portion downward with a finger, the receiving portion of the face model, which is harder than the eyeball model, receives the force from the finger applied to the eyelid model, thereby generating an appropriate reaction force to the input, and realizing a tactile sensation similar to that achieved when, for example, pushing in the eyelid of a human eye.

[0041] In a sixteenth aspect, in the contact lens putting on and taking off training device described in the fifteenth aspect, the eyelid model has grooves formed above the upper eyelid portion and below the lower eyelid portion, the grooves opening on the rear surface and into which the receiving portion of the face model is inserted.

[0042] According to the contact lens putting on and taking off training device constructed according to this aspect, the eyelid model can be positioned within the eye socket portion of the face model by utilizing the receiving portion of the face model.

[0043] In a seventeenth aspect, in the contact lens putting on and taking off training device according to the fifteenth or sixteenth aspect, the upper and lower inner faces of the receiving portion are superimposed on a front half of the eyeball model.

[0044] According to the contact lens putting on and taking off training device constructed according to this embodiment, the receiving portion of the face model can be used to position the eye model on the front side in the front-back direction. This embodiment can also be adopted in combination with the configuration described in the eighth embodiment, whereby the eye model can be positioned on both the front and back sides within the orbit.

[0045] An 18th aspect is a contact lens putting on and taking off training device described in any one of the 12th to 17th aspects, wherein the facial model has a nose portion that protrudes forward to imitate a human nose.

[0046] According to the contact lens putting on and taking off training device constructed according to this embodiment, a protrusion corresponding to the nose, which tends to get in the way when putting on and taking off contact lenses, is provided on the face model as a nose portion, making it possible to carry out more practical training. In addition, since the face model with the nose portion is a separate part from the eyelid model and the eyeball model, the hardness and shape of the nose portion can be set with a large degree of freedom.

[0047] A 19th aspect is a contact lens putting on and taking off training device described in any one of the 12th to 18th aspects, wherein the facial model is provided with left and right eye socket portions, and the left and right eyelid models are attached to the left and right corresponding eye socket portions.

[0048] According to the contact lens putting on and taking off training device constructed according to this embodiment, training in putting on and taking off the contact lens can be carried out for both the left and right eyes.

[0049] A twentieth aspect is the contact lens putting on and taking off training device described in the nineteenth aspect, wherein the eyeball model can be attached to either the left or right eye socket portion.

[0050] According to the contact lens putting on and taking off training device constructed according to this embodiment, the eyeball model can be attached to either eye socket, so that, for example, one eyeball model can be used by switching it between the left and right eye sockets. Also, since the difference in shape between the left and right eyeball models is smaller than that of the eyelid models, even if the eyeball model is detachable from the eye socket, incorrect attachment between the left and right eyeball models does not pose a problem.

[0051] In a twenty-first aspect, the contact lens putting on and taking off training device according to any one of the twelfth to twentieth aspects further comprises a support member for supporting the face model at a predetermined height.

[0052] According to the contact lens putting on and taking off training device constructed according to the present embodiment, the face model is held at an appropriate height by the support member, and training in putting on and taking off the contact lens can be performed. The predetermined height at which the face model is supported is not particularly limited, but may be, for example, a height assuming that an adult or child is seated.

[0053] A twenty-second aspect is the contact lens putting on and taking off training device according to any one of the twelfth to twenty-first aspects, wherein the eyelid model is detachable from the face model.

[0054] The eyelid model, which is deformed by touching it with fingers during contact lens putting-on and taking-off training, is easily damaged, but with the contact lens putting-on and taking-off training device constructed in accordance with the present embodiment, the eyelid model is detachable from the face model, making it possible to replace just the eyelid model.

[0055] A twenty-third aspect is the contact lens putting on and taking off training device according to any one of the twelfth to twenty-second aspects, wherein the eyeball model is detachable from the face model.

[0056] The eye model is relatively susceptible to damage due to contact with a contact lens or input when putting on and taking off the contact lens, but with a contact lens putting on and taking off training device constructed according to the present embodiment, it is possible to replace just the eye model.

[0057] The 24th aspect is a contact lens putting on and taking off training device comprising a facial model imitating a human face, an eyelid model attached to an eye socket portion opening on the front of the facial model, and an eyeball model inserted into the eye socket portion of the facial model and positioned between the upper eyelid portion and lower eyelid portion of the eyelid model, wherein a gap is provided between the lower eyelid portion of the eyelid model and the eyeball model, and the size of the gap in the central portion of the lower eyelid portion is 0.5 mm or more and 2.5 mm or less.

[0058] In the contact lens putting on and taking off training device constructed according to this embodiment, a gap is provided between the lower eyelid portion of the eyelid model and the eyeball model, which makes it easy for the contact lens to get stuck in the gap, and the contact lens is effectively prevented from getting stuck in the gap by pressing the lower eyelid portion. Therefore, the user of the contact lens putting on and taking off training device can effectively train how to press the lower eyelid portion, which is important when removing contact lenses.

[0059] In a 25th aspect, in the contact lens putting on and taking off training device described in the 24th aspect, the upper eyelid portion and the lower eyelid portion of the eyelid model are made to have a hardness that allows them to come into contact with the eyeball model by pressing them.

[0060] With a contact lens putting on and taking off training device constructed according to this embodiment, the pressing operation of the upper and lower eyelids can be efficiently trained not only by the size of the gap between the eyelids and the eyeball model but also by the hardness of the upper and lower eyelids.

[0061] A twenty-sixth aspect is the contact lens putting on and taking off training device according to the twenty-fifth aspect, wherein the eyeball model is harder than the eyelid model.

[0062] According to the contact lens wearing / removal training device constructed according to this embodiment, it is possible to provide a wearing / removal training device that includes an eyelid model and an eyeball model that are close to the relationship in hardness between the eyelid and the eyeball of an actual human eye. As a result, the amount of deformation caused by pushing the eyelid model toward the eyeball is limited by the eyeball model, so that the eyelid model and the eyeball model can be brought into close contact with each other by pushing the eyelid model toward the eyeball model, just like an actual human eye, and the contact lens can be prevented from getting into the gap between the eyelid model and the eyeball model. This allows a user of the contact lens wearing / removal training device to perform more practical training in wearing and removing contact lenses. Effect of the Invention

[0063] According to the present invention, more practical contact lens putting on and taking off training can be realized using a contact lens putting on and taking off training device. [Brief description of the drawings]

[0064] [Figure 1] FIG. 1 is a perspective view showing a contact lens putting-on and taking-off training device according to a first embodiment of the present invention; [Diagram 2] FIG. 2 is a perspective view showing the contact lens insertion / removal training device of FIG. 1 from a different angle. [Diagram 3] FIG. 2 is a vertical cross-sectional view of the contact lens insertion / removal training device shown in FIG. [Figure 4] FIG. 2 is an exploded perspective view of the contact lens insertion / removal training device shown in FIG. 1. [Diagram 5] FIG. 2 is an exploded perspective view showing the contact lens insertion / removal training device of FIG. 1 from a different angle. [Figure 6] FIG. 2 is a perspective view of a face model constituting the contact lens putting on and taking off training device shown in FIG. [Figure 7] FIG. 7 is a perspective view showing the face model of FIG. 6 from a different angle. [Figure 8] FIG. 2 is a perspective view of an eye model and an operating lever constituting the contact lens insertion / removal training device shown in FIG. [Figure 9] FIG. 2 is a perspective view showing the contact lens insertion / removal training device shown in FIG. 1 with one eyelid model removed. [Figure 10] FIG. 2 is a perspective view of a holding member constituting the contact lens putting on and taking off training device shown in FIG. [Figure 11] FIG. 11 is a perspective view showing the holding member of FIG. 10 from a different angle; [Figure 12] FIG. 2 is a perspective view of an eyelid model constituting the contact lens putting on and taking off training device shown in FIG. 1. [Figure 13] FIG. 13 is a perspective view showing the eyelid model of FIG. 12 from a different angle. [Figure 14] FIG. 2 is a right side view showing the contact lens insertion / removal training device of FIG. 1 attached to a desk. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0065] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0066] 1 to 3 show a contact lens wearing / removal training device 10 (hereinafter referred to as wearing / removing training device 10) as a first embodiment of the present invention. As also shown in Figures 4 and 5, the wearing / removing training device 10 is equipped with a face model 12, eyeball models 14, 14, and eyelid models 16, 16. In the following description, as a general rule, the up-down direction refers to the up-down direction in Figure 3, the front-rear direction refers to the left-right direction in Figure 3, and the left-right direction refers to the direction perpendicular to the paper surface in Figure 3.

[0067] As shown in Figs. 6 and 7, the face model 12 has a front surface imitating a part of a human face. The face model 12 does not have a part corresponding to a human mouth, and imitates the part of a human face above the nose. The face model 12 does not have a part corresponding to a human head or ears, which are unlikely to affect the insertion and removal of contact lenses. The back surface of the face model 12 is flat and substantially perpendicular to the front-rear direction, as shown in Fig. 7, and a plurality of recessed lightening holes 18 are formed at positions outside the eye sockets 24 described below. The face model 12 has upper and lower surfaces that are flat and extend substantially perpendicular to the vertical direction, and a screw hole for a nut 20 disposed in an embedded state is opened on the lower surface. The face model 12 has a larger horizontal width dimension on the lower surface than on the upper surface, and both left and right side surfaces are formed as inclined surfaces that incline inwardly and laterally toward the outside and toward the outside.

[0068] The face model 12 is made of a synthetic resin material and is hard enough not to be deformed by direct human force. The synthetic resin material from which the face model 12 is made is not particularly limited, but any of urethane, acrylonitrile-butadiene-styrene resin (ABS resin), polyester, polyamide, polypropylene, polyacetal, polycarbonate, modified polyphenylene oxide, etc. can be used. The nut 20 is preferably made of a metal such as stainless steel, and is inserted when the face model 12 is molded.

[0069] The face model 12 is provided with a nose section 22. The nose section 22 imitates a human nose and protrudes from the front of the face model 12. The nose section 22 is located in the center of the face model 12 in the left-right direction and is located below the center in the up-down direction. The nose section 22 protrudes forward to a greater height toward the portion corresponding to the tip of the nose. The nose section 22 imitates the external shape of the external nose and includes a portion corresponding to the nostrils, but does not have holes corresponding to the anterior nostrils.

[0070] The facial model 12 is provided with an eye socket portion 24. The eye socket portion 24 is formed in the human eye and its surrounding area, and is in the form of a recess that opens to the front of the facial model 12. The facial model 12 is provided with a pair of eye socket portions 24a, 24b on the left and right, and the eye socket portions 24a, 24b are arranged apart from each other in the left-right direction. In addition, in the facial model 12, the nose portion 22 is located between the eye socket portions 24a, 24b. The eye socket portions 24a, 24b are recesses into which the eyeball model 14 and eyelid model 16, which will be described later, are inserted and arranged, and are provided at positions corresponding to the human eye sockets, but are different in shape and size from the human eye sockets.

[0071] In the present embodiment, the eye socket portion 24 has a substantially circular lower portion and a substantially rectangular upper portion when viewed in the front-rear direction. A fitting groove 26 that opens to the inner peripheral surface and extends in the circumferential direction is provided in the lower portion of the eye socket portion 24. The fitting groove 26 is preferably provided forward of the center in the depth direction (front-rear direction) of the eye socket portion 24, and in this embodiment, is provided in a position close to the front surface of the face model 12. In addition, a pressing piece 28 that protrudes toward the inner peripheral surface at the front end is provided in the upper portion of the eye socket portion 24. The pressing piece 28 is formed integrally with the face model 12.

[0072] An attachment recess 30 is formed in the bottom wall (rear wall) of the eye socket portion 24. As shown in Fig. 7, the attachment recess 30 opens to the rear surface of the face model 12 and is a generally circular recess when viewed in the front-to-rear direction. A locking protrusion 32 that protrudes toward the inner circumference like an inner flange is provided around the entire circumference at the open end of the attachment recess 30. The attachment recess 30 opens at a position away from the lightening hole 18.

[0073] An eyeball insertion hole 34 having a circular cross section and penetrating in the front-rear direction is formed in the eye socket portion 24 and the bottom wall portion of the mounting recess 30. The eyeball insertion hole 34 penetrates the central portion of the mounting recess 30 in the front-rear direction. The inner diameter dimension of the eyeball insertion hole 34 is larger than the outer diameter dimension of the sclera portion 42 (described later) of the eye model 14. A positioning protrusion 36 is formed on the inner peripheral surface of the eyeball insertion hole 34, protruding inward at part of the circumferential direction. The positioning protrusion 36 is provided not only on the inner peripheral surface of the eyeball insertion hole 34 but also continuously to the rear of the eyeball insertion hole 34, and protrudes rearward from the bottom surface of the mounting recess 30.

[0074] A receiving portion 38 protrudes from the inner peripheral surface of the orbit portion 24. The receiving portion 38 has a substantially rectangular cross section, extends linearly in the vertical direction, and protrudes toward the inside of the orbit portion 24. The receiving portion 38 is integrally formed with the face model 12. The receiving portion 38 protrudes inward in the vertical direction from the inner peripheral surface of the orbit portion 24, and protrudes forward from the bottom surface of the orbit portion 24. In this embodiment, a pair of upper and lower receiving portions 38a, 38b are provided in each orbit portion 24, and are located approximately in the center of the orbit portion 24 in the horizontal direction of the human face, with the protruding tip surfaces arranged to be spaced apart and opposed to each other in the vertical direction.

[0075] The front surfaces (surfaces on the front side of the face) of the receiving parts 38a, 38b have flat surfaces that are substantially perpendicular to the central axis of the eyeball insertion hole 34, and extend linearly in the up-down direction of the face with a substantially constant width dimension (preferably 5 to 30 mm) in the left-right direction of the face. It is preferable that the front surfaces of the receiving parts 38a, 38b are set to be located within a depth range of 3 to 15 mm from the opening end of the eye socket part 24 on the front side of the face, from the viewpoint of realizing a suitable flexibility and a deformation guide action in the eyelid model 16 described later. In addition, as shown in FIG. 3, the protruding tip parts of the receiving parts 38a, 38b protrude to a position on the extension of the eyeball insertion hole 34 in the forward direction, and overlap with the eyeball insertion hole 34 in the front-back projection. The protruding tip surfaces of the receiving parts 38a, 38b are abutment inclined surfaces 40 that are inclined toward the inner circumference of the eye socket part 24 toward the front. The inclined contact surface 40 is inclined upward and downward and inward toward the front so as to fit the spherical surface of the front half of the eyeball model 14, and is curved in the circumferential direction.

[0076] As shown in Fig. 8, eyeball model 14 imitates a human eyeball and is generally spherical. Eyeball model 14 is an independent part from face model 12 and is attached to face model 12 as described below. Eyeball model 14 is made of elastomer and has rubber-like elasticity that allows it to be easily deformed by applying force, such as by pressing with a fingertip. Eyeball model 14 is softer than face model 12. The material from which eyeball model 14 is made is not particularly limited, but for example, resin elastomers such as silicone rubber, urethane rubber, and isoprene rubber, natural rubber, etc. are preferably used.

[0077] More specifically, the eyeball model 14 has an outer shape imitating the sclera and cornea of ​​a human eye, and a cornea part 44 corresponding to the cornea having a larger curvature is formed in a shape that protrudes forward in front of the sclera part 42, which is a spherical body corresponding to the sclera. In the eyeball model 14, the sclera part 42 is white, and the cornea part 44 is a color corresponding to the iris of the human eye that is viewed from the outside through the cornea. The sclera part 42 and the cornea part 44 may be colored by painting after molding, for example, or may be colored in advance by blending a pigment (industrial coloring matter) into the resin material at the time of molding. In this embodiment, the eyeball model 14 is molded by blending a white pigment into the forming material, and the cornea part 44 of the molded product is painted black or the like, so that the sclera part 42 and the cornea part 44 are set to appropriate colors. In addition, a coating layer is preferably provided on the surface of the eyeball model 14. This coating layer improves durability against deterioration and wear caused by repeated putting on and taking off of the contact lens, prevents the paint from peeling off, and achieves a surface texture similar to that of the human eye.

[0078] The eyeball model 14 is disposed in the eye socket portion 24 of the face model 12. The eyeball model 14 is inserted into the eyeball insertion hole 34 of the eye socket portion 24 from the rear, and as shown in Figs. 3 and 9, the front half of the sclera portion 42 is superimposed on the abutment inclined surfaces 40a, 40b which are the upper and lower inner surfaces of the receiving portions 38a, 38b protruding into the eye socket portion 24. This defines the position of the eyeball model 14 in the front-rear direction within the eye socket portion 24. The receiving portions 38a, 38b are provided on both the upper and lower sides of the eyeball model 14. The cornea portion 44 of the eyeball model 14 is located between the receiving portions 38a, 38b. The eyeball model 14 has a smaller diameter than the eyeball insertion hole 34 and is spaced from the inner peripheral surface of the eyeball insertion hole 34 toward the inner peripheral side. The eyeball model 14 is detachable from the face model 12, and can be easily replaced.

[0079] An operating lever 46 is attached to the eyeball model 14. The operating lever 46 includes a shaft 48 fixed at its front end to the eyeball model 14, and a spherical grip 50 provided at the rear end of the shaft 48. The shaft 48 of the operating lever 46 has a male thread structure at its front end, and is fixed at its front end to the eyeball model 14 by being screwed into a nut (not shown) inserted inside the eyeball model 14, and extends rearward from the eyeball model 14. The operating lever 46 is disposed on a rearward extension of the visual axis of the eyeball model 14, and the central axis direction of the shaft 48 corresponds to the visual axis direction of the eyeball model 14.

[0080] A holding member 52 is attached to the eye model 14 on which the operating lever 46 is provided. As shown in Figures 10 and 11, the holding member 52 is generally disk-shaped, and in this embodiment is made of an elastic material such as rubber or a resin elastomer. The holding member 52 includes an eye mounting portion 54 and a lever insertion portion 56.

[0081] The eye mounting portion 54 constitutes the front portion of the holding member 52, and is generally formed into a stepped cylindrical shape. That is, the eye mounting portion 54 includes an annular plate-shaped mounting plate portion 58, a small-diameter cylindrical eye holding portion 60 protruding forward from the inner peripheral end portion of the mounting plate portion 58, and a large-diameter cylindrical fixing portion 62 protruding rearward from the outer peripheral end portion of the mounting plate portion 58.

[0082] The mounting plate 58 of the eyeball mounting part 54 has an outer diameter dimension corresponding to the mounting recess 30 opening on the rear surface of the face model 12, and the front end part can be inserted into the mounting recess 30. A locking groove 64 opening on the outer circumferential surface is formed in the mounting plate 58 at the insertion part into the mounting recess 30. The locking groove 64 extends continuously in the circumferential direction around the entire circumference of the mounting plate 58, and is locked to the face model 12 in the front-rear direction by inserting the locking protrusion 32 provided at the opening end of the mounting recess 30. The outer circumferential surface of the mounting plate 58 is a cylindrical surface extending in the front-rear direction with a substantially constant outer diameter dimension behind the locking groove 64, and is a tapered cylindrical surface having a smaller diameter toward the front than the locking groove 64.

[0083] The eyeball holding part 60 of the eyeball mounting part 54 has a substantially cylindrical shape, and the outer peripheral surface is a straight cylindrical surface corresponding to the inner peripheral surface of the eyeball insertion hole 34, and the inner peripheral surface is a curved tapered eyeball seating surface 66 corresponding to the rear half of the sclera part 42 of the eyeball model 14. The inner peripheral surface of the eyeball holding part 60 formed by the eyeball seating surface 66 expands toward the outer peripheral side toward the protruding tip side of the eyeball holding part 60, gradually increasing in diameter. In the eyeball holding part 60 of this embodiment, the protruding height from the mounting plate part 58 gradually increases toward the inside in the left-right direction (nose part 22 side) when the holding member 52 is mounted on the face model 12. The inner peripheral surface of the mounting plate part 58 is a cylindrical surface extending in the front-rear direction with a substantially constant cross-sectional shape, and continues rearward from the eyeball seating surface 66 of the eyeball holding part 60. The inner surface of the mounting plate portion 58 is partially expanded in the circumferential direction, and when the eye model 14 is placed on the eye seat surface 66 from the front, air is allowed to pass through the expanded portion, preventing the generation of abnormal noise.

[0084] The lever insertion portion 56 constitutes the rear of the holding member 52 and is generally disk-shaped. The lever insertion portion 56 has a slit 68 penetrating in the front-rear thickness direction. The slit 68 extends from the center of the lever insertion portion 56 toward both the top and bottom sides and the left and right inside, and is in a rolled T shape. The center and three ends of the slit 68 are lever holding portions 70 each having a width larger than the other portions, and are circular in shape corresponding to the outer shape of the operating lever 46. The lever holding portions 70 provided at the three ends extend at an angle relative to the front-rear direction so that the operating lever 46 in a tilted state, which will be described later, can be easily held in an inserted state. The width of the portion of the slit 68 that is not in contact with the lever holding portion 70 is smaller than the diameter of the shaft portion 48 of the operating lever 46.

[0085] The retaining member 52 is constructed by overlapping and fastening the rear end surface of the fastening tube portion 62 in the eyeball mounting portion 54 and the front surface of the outer circumferential end of the lever insertion portion 56 to each other in the front-to-rear direction. The means for fastening the eyeball mounting portion 54 and the lever insertion portion 56 is not particularly limited, but is preferably adhesive or welding.

[0086] The holding member 52 has an open portion 72 formed in a part of the circumferential direction. The open portion 72 is formed so as to divide the cylindrical eye mounting portion 54 in a part of the circumferential direction and to divide the plate-shaped lever insertion portion 56 in the circumferential direction on the left and right inner sides of the slit 68 extending inwardly to the left and right. As a result, the holding member 52 has a part of the outer circumferential surface divided in the circumferential direction by the open portion 72, and is elastically deformable so as to expand the open portion 72 in the circumferential direction. Note that in a resting state where no external force is applied to the holding member 52, the width dimension of the open portion 72 is smaller than the outer diameter dimension of the operating lever 46, and by applying an external force to the holding member 52 to expand the open portion 72, the width dimension of the open portion 72 in the expanded state can be made larger than the outer diameter dimension of the operating lever 46.

[0087] The holding member 52 is attached to the operating lever 46. That is, the operating lever 46 is inserted into the slit 68 and the central hole of the eyeball mounting part 54 through the open part 72 of the holding member 52. The eyeball model 14 and the grip part 50, each having a diameter larger than that of the operating lever 46, are provided at both ends of the operating lever 46. Since the shaft part 48 of the operating lever 46 can be inserted into the slit 68 and the central hole of the eyeball mounting part 54 from the side through the open part 72, it is easy to attach the holding member 52 to the operating lever 46. Note that, in order to enable the shaft part 48 to be inserted into the slit 68 from the side through the open part 72, it is preferable that the operating lever 46 is assembled to the holding member 52 in a separate state that is not assembled to the face model 12.

[0088] Furthermore, the slit 68 of the holding member 52 allows the operating lever 46 to tilt. As described below, the front end of the operating lever 46 to which the eye model 14 is attached is positioned with respect to the holding member 52, and therefore the operating lever 46 is allowed to tilt around the eye model 14. The direction in which the operating lever 46 is allowed to tilt is determined by the extension direction of the slit 68, and in this embodiment, tilting is allowed by moving the grip portion 50, which is the rear end of the operating lever 46, in both vertical and horizontal directions from the neutral position.

[0089] The holding member 52 is attached to the eye model 14. That is, the eye model 14 attached to the front end of the operating lever 46 has a rear half of the sclera portion 42 inserted into the inner circumference of the eye holding part 60, and a part of the rear surface of the sclera portion 42 is superimposed on the eye seat surface 66 of the eye holding part 60 in the eye mounting part 54.

[0090] The holding member 52 is attached to the face model 12. That is, the mounting plate portion 58 of the eyeball mounting portion 54 of the holding member 52 is inserted into the mounting recess 30 opening on the rear surface of the face model 12, and the locking protrusion 32 provided at the opening of the mounting recess 30 in the face model 12 is inserted into the locking groove 64 opening on the outer circumferential surface of the mounting plate portion 58 to be locked in the front-rear direction. The eyeball holding portion 60 of the eyeball mounting portion 54 of the holding member 52 is inserted into the eyeball insertion hole 34 as shown in Figs. 3 and 9, and is inserted between the eyeball model 14 and the inner circumferential surface of the eyeball insertion hole 34 in the radial direction. Furthermore, the positioning protrusion 36 of the face model 12 is inserted into the opening portion 72 of the holding member 52, and the holding member 52 is positioned in the circumferential direction of the eyeball insertion hole 34 by the locking of the positioning protrusion 36 with the inner surface of the opening portion 72. As a result, the holding member 52 is attached in a positioned state relative to the face model 12.

[0091] 3, the eye model 14 disposed in the eye socket portion 24 of the face model 12 is sandwiched in the front-to-rear direction between the abutment inclined surfaces 40a, 40b of the receiving parts 38a, 38b and the eye seat surface 66 of the eye holding part 60, and is positioned in the front-to-rear direction. Furthermore, the eye model 14 is positioned in the up-down and left-right directions by the eye holding part 60 being interposed between the eye model 14 and the inner peripheral surface of the eye insertion hole 34. In this way, the eye model 14 is held in the eye socket portion 24 by the holding member 52.

[0092] With the eyeball model 14 positioned and held within the orbit 24, the visual axis direction can be changed by tilting the operating lever 46 along the slit 68 of the holding member 52. The operating lever 46 protrudes rearward, and a gripping portion 50 to be gripped during operation is provided at the rear end of the shaft portion 48, making tilting easy. In this embodiment, the gripping portion 50 of the operating lever 46 can be moved to both the top and bottom and to the inside and to the left and right, so that the cornea portion 44 can be moved to both the top and bottom and to the outside and to the left and right from the normal viewing position by changing the visual axis direction.

[0093] As shown in Figures 12 and 13, the eyelid model 16 imitates the area around the eyes on a human face, and has an upper eyelid portion 76 and a lower eyelid portion 78 above and below a palpebral fissure portion 74. The eyelid model 16 is a separate component independent of the face model 12 and the eyeball model 14, and is attached to the face model 12 as described below. The eyelid model 16 has a shape corresponding to the eye socket portion 24 of the face model 12, and has a substantially circular lower portion and a substantially rectangular upper portion when viewed in the front-to-back direction. The eyelid model 16 is generally plate-shaped, and its thickness in the front-to-back direction gradually decreases from the inside to the outside in the left-to-right direction.

[0094] The eyelid model 16 is made of a soft elastomer and has flexibility that allows easy deformation. The material for forming the eyelid model 16 is not particularly limited, but for example, resin elastomers such as silicone rubber, urethane rubber, isoprene rubber, and natural rubber are preferably used. The eyeball model 14 made of elastomer is harder than the eyelid model 16, and the eyelid model 16 can be deformed with a smaller input than the eyeball model 14. The eyelid model 16 preferably has an Asker C hardness of 0 degrees or more and 15 degrees or less, more preferably 0 degrees or more and 7 degrees or less, and in this embodiment, it is 0 degrees.

[0095] An engaging protruding ridge 80 protruding to the outer periphery is integrally formed at the lower part of the eyelid model 16, which is substantially circular when viewed in the front-to-back direction. The engaging protruding ridge 80 has a shape and size corresponding to the engaging recessed groove 26 that opens into the inner peripheral surface of the eye socket portion 24 in the face model 12. The engaging protruding ridge 80 has a substantially semicircular cross section and extends in the circumferential direction of the eyelid model 16, narrowing in the front-to-back direction toward the protruding tip.

[0096] 13, a spherical recess 82 is opened on the rear surface of the eyelid model 16. The spherical recess 82 is a recess having a spherical inner surface, and is formed in the central portion of the eyelid model 16 where the palpebral fissure 74 is formed, and the upper eyelid portion 76 and the lower eyelid portion 78 are each thin-walled.

[0097] Groove portions 84a, 84b are formed on the rear surface of the eyelid model 16, opening respectively on the upper and lower outer sides of the spherical recess 82. The upper groove portion 84a is located above the upper eyelid portion 76, and is connected to the spherical recess 82 by penetrating the upper wall portion of the spherical recess 82. The lower groove portion 84b is located below the lower eyelid portion 78, and is connected to the spherical recess 82 by penetrating the lower wall portion of the spherical recess 82. The groove portions 84a, 84b have groove cross-sectional shapes corresponding to the receiving portions 38a, 38b, and in this embodiment, extend linearly in the vertical direction with a substantially constant rectangular cross section.

[0098] The eyelid model 16 is inserted from the front into the orbit section 24 of the face model 12 and fitted therein. That is, the outer peripheral end of the upper part of the eyelid model 16 is inserted behind the pressing piece 28 that protrudes toward the inner peripheral side at the upper part of the orbit section 24, and the eyelid model 16 is prevented from slipping out forward from the orbit section 24 by engaging with the rear surface of the pressing piece 28. Also, the eyelid model 16 has a fitting protrusion 80 that protrudes from the outer peripheral surface of the lower part fitted into a fitting recessed groove 26 that opens into the inner peripheral surface of the orbit section 24, and the eyelid model 16 is prevented from slipping out forward from the orbit section 24 by engaging with the fitting protrusion 80 and the inner surface of the fitting recessed groove 26. As a result, the eyelid model 16 is fitted into the face model 12 in a state where it is prevented from separating forward, and the opening of the orbit section 24 facing forward is covered by the eyelid model 16. The eyelid model 16 is detachable from the face model 12, making it easy to replace.

[0099] The receivers 38a, 38b protruding into the orbit 24 of the face model 12 are inserted into the upper and lower grooves 84a, 84b opening on the rear surface of the eyelid model 16. When the eyelid model 16 is fitted into the orbit 24, the groove width dimension of the groove 84a of the eyelid model 16 is made smaller than the width dimension of the receiver 38a, and the groove width dimension of the groove 84b is made smaller than the width dimension of the receiver 38b, and the receivers 38a, 38b are fitted into the grooves 84a, 84b. The fitting of the receivers 38a, 38b into the grooves 84a, 84b also exerts a positioning effect on the eyelid model 16 with respect to the orbit 24.

[0100] The contact inclined surface 40a of the upper receiving portion 38a protrudes downward from the upper inner surface of the spherical recess 82 of the eyelid model 16, and the engagement portion between the receiving portion 38a and the groove portion 84a is located above and away from the upper eyelid portion 76, so that the receiving portion 38a and the upper eyelid portion 76 are separated by a gap. On the other hand, the contact inclined surface 40b of the lower receiving portion 38b is continuous with the lower inner surface of the spherical recess 82 of the eyelid model 16, and the engagement portion between the receiving portion 38b and the groove portion 84b is located close to the lower eyelid portion 78. As a result, the upper eyelid portion 76 is not reinforced by the receiving portion 38a, and the reaction force when pressed is small, and the lower eyelid portion 78 is pressed relatively large due to the reinforcing effect of the receiving portion 38b.

[0101] The front surface of the bottom wall of the eye socket 24 is appropriately uneven, and the back surface of the eyelid model 16 is shaped to correspond to the unevenness. This adjusts the hardness of the eyelid model 16 when set in the eye socket 24, and the reaction force when the eyelid model 16 is pressed with a fingertip is appropriately set at each part.

[0102] The front half of the eyeball model 14 protruding from the holding member 52 is inserted into the spherical recess 82 of the eyelid model 16 fitted into the eye socket portion 24. A part of the eyeball model 14 including the cornea portion 44 is disposed between the upper eyelid portion 76 and the lower eyelid portion 78 of the eyelid model 16, and is exposed forward through the palpebral fissure portion 74.

[0103] A gap 86 is formed between the eyeball model 14 and the lower eyelid portion 78 of the eyelid model 16. In this embodiment, the lower eyelid portion 78 is separated from the eyeball model 14 over the entirety, and the gap 86 is formed over the entirety between the opposing surfaces of the eyeball model 14 and the lower eyelid portion 78. The gap 86 is made larger than the gap between the eyeball and the lower eyelid in a human eye. Specifically, for example, the size of the gap 86 in the left-right central portion of the lower eyelid portion 78 is desirably 0.5 mm or more and 2.5 mm or less, and more preferably 0.8 mm or more and 2.0 mm or less. In addition, the hardness of the lower eyelid portion 78 and the size of the gap 86 are adjusted so that the lower eyelid portion 78 can be brought into contact with the eyeball model 14 by pressing the lower eyelid portion 78 from the front to the rear with a fingertip.

[0104] A gap 88 is formed between the eyeball model 14 and the upper eyelid portion 76 of the eyelid model 16. The upper eyelid portion 76 may be separated from the eyeball model 14 over its entirety or may be partially in contact with the eyeball model 14, but in this embodiment, the gap 88 is provided at least in the central portion in the left-right direction. The size of the gap 88 in the central portion of the upper eyelid portion 76 is preferably 0.5 mm or more and 2.5 mm or less, and more preferably 0.7 mm or more and 2.0 mm or less. In addition, the hardness of the upper eyelid portion 76 and the size of the gap 88 are adjusted so that the upper eyelid portion 76 can be brought into contact with the eyeball model 14 by pressing the upper eyelid portion 76 with a finger from the front to the rear. It should be noted that the size of the above-mentioned gaps 86, 88 is the size when the eyeball model 14 is in a normal viewing state with the operating lever 46 extending in the front-to-back direction without being inclined, and the size of the gaps 86, 88 may fall outside the above-mentioned numerical range due to a change in the visual axis direction accompanied by the inclination of the operating lever 46.

[0105] As shown in Figs. 1, 2, 4 and 5, the left and right eye sockets 24a and 24b of the face model 12 are respectively fitted with an eyeball model 14 having an operating lever 46, a holding member 52 and an eyelid model 16. Therefore, the wearing / removing training device 10 can be provided as a set including, for example, the face model 12, a pair of left and right operating levers 46 and eyeball models 14, a pair of left and right holding members 52 and a pair of left and right eyelid models 16. The eyeball model 14, the holding member 52 and the eyelid model 16 attached to the left and right eye sockets 24a and 24b are symmetrical to each other. However, the left and right eyeball models 14 and 14 each having the operating lever 46 are shaped identically to each other, and the left and right holding members 52 and 52 are shaped rotationally symmetrical to each other by 180 degrees, and therefore can be made into common parts. In this case, the eyeball model 14 and the holding member 52 can be detachably attached to either the left or right eye socket portion 24. Therefore, for example, the face model 12, the left and right eyelid models 16, 16, the eyeball model 14 with one operating lever 46, and one holding member 52 may be provided as a combined set, and the eyeball model 14 with the operating lever 46 and the holding member 52 may be used by appropriately switching them to the left and right eye socket portions 24a, 24b.

[0106] The thus-constructed wearing / removing training device 10 is used for a user to train in wearing and removing a contact lens on the eye of another person. The contact lens used for the wearing / removing training may be a soft contact lens or a hard contact lens. In addition, the contact lens may be not only a vision corrective contact lens that is worn on the cornea to correct refractive errors, but also, for example, an orthokeratology lens that corrects the shape of the cornea to reduce myopia, or a scleral lens (scleral lens) that is supported by the sclera.

[0107] During training to fit a contact lens on the eye model 14, the user first grasps the grip portion 50 of the operating lever 46 and moves it upward, thereby changing the visual axis direction of the eye model 14 to a downward diagonal direction that tilts forward. Next, the user attaches the contact lens placed on the fingertip to the surface of the eye model 14 exposed through the palpebral fissure 74, and returns the visual axis direction to the front, thereby completing the wearing of the contact lens.

[0108] In this way, the wearing / removing training device 10 of this embodiment makes it possible to change the visual axis direction of the eyeball model 14 before wearing a contact lens, and allows training in wearing the contact lens to be performed with the cornea 44 of the eyeball model 14 facing diagonally downward, just as in the case of actually wearing a contact lens on another person's eye. Therefore, the difference between contact lens wearing training using the wearing / removing training device 10 and contact lens wearing on an actual human eye is reduced, allowing for more practical wearing training, and thus making it possible to efficiently improve contact lens wearing skills.

[0109] Furthermore, the visual axis direction of the eyeball model 14 can be easily and quickly changed by tilting the operating lever 46 extending backward from the eyeball model 14, enabling efficient training. Moreover, the abutment inclined surfaces 40a, 40b of the receiving parts 38a, 38b that position the eyeball model 14 and the eyeball seating surface 66 of the eyeball holding part 60 are curved surfaces corresponding to the sclera part 42 of the eyeball model 14, so that when the operating lever 46 is tilted, the visual axis direction of the eyeball model 14 is stably changed by the guiding action of the abutment inclined surfaces 40a, 40b and the eyeball seating surface 66. In addition, a spherical grip part 50 is provided at the rear end part of the operating lever 46, and by holding the grip part 50, the operating lever 46 can be easily tilted with a small input.

[0110] The slit 68 of the holding member 52, through which the operating lever 46 moves when tilted, is provided with a plurality of partially widened lever holding portions 70, and the operating lever 46 is inserted into the lever holding portions 70 to be held. This allows the eyeball model 14 to be held in each of the visual axis directions of the front view, the upward view, and the downward view. Therefore, contact lens wearing training can be performed while the eyeball model 14 is held in the downward view state. The portion of the slit 68 that is not in contact with the lever holding portion 70 has a width dimension smaller than the diameter of the operating lever 46, so that the operating lever 46 is unlikely to unintentionally come off the lever holding portion 70 due to its own weight or the like and tilt, and the orientation of the eyeball model 14 is stably held. The holding member 52 in which the slit 68 is formed is made of an elastic material, so that even if the width dimension of the slit 68 is smaller than the diameter of the operating lever 46, the operating lever 46 can be moved while pushing the slit 68 wider by applying a force to the grip portion 50. At this time, since the holding member 52 is formed from an elastic material, problems such as the operating lever 46 getting caught on the inner surface of the slit 68 and abnormal noise being generated due to the sliding contact of the operating lever 46 can be easily avoided.

[0111] It is preferable that the user pour or spray a low-friction agent, such as a lubricant simulating tear fluid or silicone grease, onto the surface of eyeball model 14 before wearing the contact lens. This makes it possible to bring the friction coefficient of the surface of eyeball model 14 closer to the friction coefficient of the eyeball surface of a human eye lubricated with tear fluid. This prevents the contact lens from sticking excessively to eyeball model 14, realizing a state closer to wearing the contact lens on a human eye.

[0112] On the other hand, during training to remove the contact lens attached to the eye model 14, the user first grasps the grip portion 50 of the operating lever 46 and moves the grip portion 50 to change the visual axis direction of the eye model 14. This allows training to be performed to remove the contact lens with the orientation of the eye model 14 set, similar to when actually removing a contact lens from another person's eye. Note that the orientation of the eye model 14 can be easily and quickly changed by the operating lever 46, the grip portion 50 provided at the end of the operating lever 46 allows easy operation with little force, and the orientation of the eye model 14 is stably maintained, similar to when the contact lens is worn.

[0113] For example, if the contact lenses have become dry due to the passage of time since they were worn, a lubricant or eye drops simulating tears may be poured onto the surface of the eyeball model 14 to provide appropriate wetting before removing the contact lenses.

[0114] If the contact lens to be removed is a soft contact lens, the user grasps the grip portion 50 of the operating lever 46 and moves it downward, thereby changing the visual axis direction of the eyeball model 14 to an obliquely upward direction that tilts forward. Then, in the same way as when actually removing a soft contact lens from another person's eye, the user, for example, slides the contact lens downward with the index finger and then picks it up with the fingertips to remove it from the eyeball model 14 with the cornea portion 44 of the eyeball model 14 facing obliquely upward.

[0115] When the contact lens to be removed is a hard contact lens, the user positions the grip portion 50 of the operating lever 46 in the center and faces the visual axis direction of the eyeball model 14 forward to bring it into a frontal viewing state. Then, in the same manner as when actually removing a hard contact lens from another person's eye, with the cornea portion 44 of the eyeball model 14 facing forward, the user, for example, pushes the lower eyelid portion 78 toward the eyeball model 14 to press it against the eyeball model 14, while sliding the upper eyelid portion 76 downward to bring it close to the lower eyelid portion 78, thereby removing the contact lens from the eyeball model 14 by sandwiching it between the upper eyelid portion 76 and the lower eyelid portion 78.

[0116] In the wearing / removing training device 10 of this embodiment, a gap 86 equivalent to that of a human eye is provided between the lower eyelid portion 78 and the eyeball model 14. This makes it easier for the contact lens to get into the gap 86 when the lower eyelid portion 78 is not sufficiently pushed toward the eyeball model 14. Therefore, by using the wearing / removing training device 10 to train the user to wear and remove a hard contact lens, the user will consciously push the lower eyelid portion 78 toward the eyeball model 14, and will be able to easily learn how to push the lower eyelid portion 78, which is important when removing a hard contact lens. The gap 86 can be set larger than the gap between the lower eyelid and the eyeball of a human eye, which allows the user to more actively push in the lower eyelid portion 78, thereby further enhancing the training effect.

[0117] Furthermore, because the wearing / removing training device 10 of this embodiment has a gap 88 between the upper eyelid portion 76 and the model eyeball 14, if the upper eyelid portion 76 is not sufficiently pressed toward the model eyeball 14, the contact lens will get caught in the gap 88 when the upper eyelid portion 76 is slid downward with the fingertips. Therefore, by using the wearing / removing training device 10 to train in putting on and taking off a hard contact lens, the user will consciously press the upper eyelid portion 76 toward the model eyeball 14, and will easily learn to press the upper eyelid portion 76 when sliding it down, which is important when putting on and taking off a hard contact lens.

[0118] In the wearing / removing training device 10 according to this embodiment, the face model 12, the eyeball model 14, and the eyelid model 16 are separate, independent parts. Therefore, it is possible to set the performance required for the face model 12, the eyeball model 14, and the eyelid model 16, such as hardness, tactile feel, and durability, independently, and it is possible to provide a wearing / removing training device 10 with higher performance. In particular, since the eyeball model 14 and the eyelid model 16 are made of an elastic body (elastomer) and are softer than the face model 12, the tactile feel of the eyeball model 14 and the eyelid model 16, which are important when wearing and removing contact lenses, is made closer to that of the human body, while the relatively hard face model 12 emphasizes the unevenness of the face that hinders wearing and removing contact lenses, thereby enabling more efficient training.

[0119] Furthermore, because the eyelid model 16 is softer than the eyeball model 14, it is possible to effectively carry out training such as sliding down the upper eyelid portion 76 and pressing the lower eyelid portion 78. Also, because the eyeball model 14 is harder than the eyelid model 16 and has a hardness relationship closer to that of an actual human eye, it is possible to carry out practical training such as, for example, when pressing the upper and lower eyelid portions 76, 78 toward the eyeball model 14, grasping the contact of the eyelid portions 76, 78 with the eyeball model 14 by a change in tactile sensation.

[0120] The eyeball model 14 and eyelid model 16, which are soft and are repeatedly pressed with fingertips, deteriorate or become damaged in a relatively short period of time compared to the face model 12, which is hard and is not actively touched during training, but because the eyeball model 14 and the eyelid model 16 are separate parts that can be attached and detached from the face model 12, it is possible to replace, for example, only the damaged eyeball model 14 or eyelid model 16. As can be seen from this, the face model 12, eyeball model 14, operating lever 46, holding member 52, and eyelid model 16, which are the components of the wearing / removing training device 10, can be provided as a set in which all or some of them are combined, or can be provided as individual items.

[0121] In this embodiment, the softness of the upper eyelid portion 76 and the lower eyelid portion 78 is also adjusted by fitting the hard receiving portions 38a, 38b formed integrally with the face model 12 into the grooves 84a, 84b of the eyelid model 16, and a softness closer to that of a human upper and lower eyelids is set. Therefore, when the user slides the upper eyelid portion 76 down while pressing it toward the eyeball model 14 with his / her fingertips, or when the user presses the lower eyelid portion 78 toward the eyeball model 14, a more appropriate reaction force is applied to the fingertips.

[0122] 14, the wearing / removing training device 10 is capable of holding the face model 12 at a predetermined height by attaching a stand 90 as a support member to the face model 12. This makes it possible to set the position of the eye model 14 at the same height as when actually putting on and taking off a contact lens, allowing for more practical wearing / removing training.

[0123] The stand 90 of this embodiment includes a rod-shaped portion 92 extending in the vertical direction, and a male screw provided at the upper end of the rod-shaped portion 92 is screwed into a nut 20 exposed on the underside of the face model 12. A support portion 94 that holds the rod-shaped portion 92 in an extended state is provided below the rod-shaped portion 92 in the stand 90. In this embodiment, the support portion 94 is in the form of a clamp that can be attached to a support base A such as a chair or a desk, but may be, for example, a tripod that stands on the floor or a multi-jointed winding structure that can be connected to another member by winding.

[0124] Although the embodiment of the present invention has been described in detail above, the present invention is not limited by the specific description. For example, the face model 12 may not have a portion corresponding to the forehead, and in this case, the eye socket portion 24 may open not only on the front surface of the face model 12 but also on the top surface. Also, the nose portion 22 is not essential in the face model 12 and may be omitted. Furthermore, the face model 12 may only have one eye socket portion 24 and its surroundings, and the wearing / removing training device is not necessarily limited to having portions corresponding to both human eyes, and may only have a portion corresponding to one eye. Also, the face model may have some portions corresponding to a human mouth, ears, head, and chin.

[0125] The face model 12 in the above embodiment is hard enough not to be deformed by an external force such as pressing with a finger, but it can also be soft enough to be deformed by pressing with a finger. Also, for example, if the face model has a double structure in which a soft material layer is provided on the surface of a hard material, it is possible to realize a touch closer to that of a human face while maintaining the uneven shape of the surface of the face model.

[0126] The holding member 52 is not essential as a separate part. For example, a portion corresponding to the holding member 52 may be integrally formed with the face model 12, or the holding member 52 may be fixed to the face model 12.

[0127] The mounting structure of the eyelid model 16 to the face model 12 is not limited to the example of the embodiment, and other structures may be adopted as long as the eyelid model 16 can be detachably mounted to the face model 12. Specifically, for example, the fitting groove 26 may be provided over the entire circumference of the inner peripheral surface of the eye socket portion 24, and the fitting protrusion 80 may be provided over the entire circumference of the eyelid model 16, and the fitting protrusion 80 may be fitted into the fitting groove 26 over the entire circumference, thereby mounting the eyelid model 16 to the face model 12.

[0128] In the above embodiment, the eyelid models 16, 16 attached to the left and right eye sockets 24a, 24b are separate parts independent of each other, but the eyelid model may be integrally provided with a portion attached to the left and right eye sockets 24a, 24b. Specifically, for example, an eyelid model having a structure in which portions inserted into the left and right eye sockets 24a, 24b are connected to each other may be adopted, a groove may be provided between the left and right eye sockets 24a, 24b in the face model 12, and the connecting portion at the middle of the left and right of the eyelid model may be fitted into the groove. [Explanation of symbols]

[0129] 10 Contact lens wearing / removal training device (first embodiment) 12 Facial Model 14 Eyeball Model 16 Eyelid Model 18 Hole for cutting meat 20 Nut 22 Nose 24(24a,24b) Orbital part 26 Fitting groove 28 Presser piece 30 Mounting recess 32 Locking protrusion 34 Eyeball insertion hole 36 Positioning protrusion 38(38a,38b) Receiving part 40(40a,40b) Contact slope 42 Sclera 44 Cornea 46 Operating lever 48 Shaft 50 Gripping part 52 Retaining member 54 Eyeball attachment part 56 Lever insertion part 58 Mounting plate 60 Eyeball holder 62 Fixed tube part 64 Locking groove 66 Eyeball seat 68 Slit 70 Lever holder 72 Open area 74 Palpebral fissure 76 Upper eyelid area 78 Lower eyelid area 80 Fitting protrusion 82 Spherical recess 84(84a,84b) Groove 86 Gap 88 Gap 90 Stand (supporting member) 92 Rod-shaped part 94 Support part A Support stand

Claims

1. A facial model that imitates a human face, An eyelid model attached to an eye socket portion opening in the front of the face model; an eyeball model that is inserted into the eye socket portion of the face model and disposed between the upper eyelid portion and the lower eyelid portion of the eyelid model; A contact lens putting on and taking off training device comprising: A contact lens putting on and taking off training device, wherein the visual axis direction of the eyeball model can be changed and set relatively to the face model.

2. 2. A contact lens putting on and taking off training device according to claim 1, wherein the visual axis direction of the eyeball model can be changed in the vertical direction.

3. 3. A contact lens putting on and taking off training device as described in claim 1 or 2, wherein an operating lever extending rearward is attached to the eyeball model, and the visual axis direction of the eyeball model can be changed and set by tilting the operating lever.

4. a holding member for holding the eyeball model in the eye socket portion of the face model is attached to the face model; the holding member has a slit through which the operating lever is inserted and which allows tilting of the operating lever around the eyeball model; 4. A contact lens putting on and taking off training device according to claim 3, wherein the visual axis direction of the eyeball model can be changed by tilting the operation lever permitted by the slit.

5. 5. A contact lens putting on and taking off training device according to claim 4, wherein said holding member is made of an elastic material.

6. The holding member has an opening portion extending laterally from the slit and dividing an outer circumferential surface of the holding member in a circumferential direction, 5. A contact lens putting on and taking off training device as described in claim 4, wherein when the holding member is in a standalone state and not attached to the face model, the operating lever can be inserted into the slit from the side of the holding member through the opening.

7. 7. A contact lens putting on and taking off training device as described in claim 6, wherein the orbital portion of the facial model is provided with a positioning protrusion that is inserted into the open portion of the holding member to position the holding member circumferentially relative to the orbital portion of the facial model.

8. the holding member is provided with an eyeball holding portion that protrudes forward and is inserted between an inner circumferential surface of the eye socket portion of the face model and the eyeball model in a radial direction, 5. A contact lens putting on and taking off training device as described in claim 4, wherein the inner peripheral surface of the eyeball holding portion is a tapered eyeball seating surface that widens toward the protruding tip, and the eyeball seating surface is superimposed on the rear half of the eyeball model.

9. The width dimension of the slit is smaller than the diameter of the portion of the operating lever that is inserted into the slit, 5. A contact lens putting on and taking off training device according to claim 4, wherein said slit is provided with a lever holding portion whose width is partially increased so as to be capable of holding said operating lever.

10. the eyelid model is a separate part from the face model and is inserted into the eye socket part of the face model; 3. A contact lens putting on and taking off training device according to claim 1, wherein said eyeball model is a separate part from said face model and is inserted into said eye socket part of said face model.

11. 3. A contact lens putting on and taking off training device as described in claim 1 or 2, wherein a gap is provided between the lower eyelid portion of the eyelid model and the eyeball model, and the size of the gap in the central portion of the lower eyelid portion is 0.5 mm or more and 2.5 mm or less.

12. A facial model that imitates a human face, An eyelid model attached to an eye socket portion opening in the front of the face model; an eyeball model that is inserted into the eye socket portion of the face model and disposed between the upper eyelid portion and the lower eyelid portion of the eyelid model; A contact lens putting on and taking off training device comprising: the eyelid model is a separate part from the face model and is inserted into the eye socket part of the face model; The contact lens insertion / removal training device has an eyeball model as a separate part from the face model and is inserted into the eye socket of the face model.

13. 13. The contact lens putting on and taking off training device according to claim 12, wherein the eyeball model is harder than the eyelid model.

14. 14. The contact lens putting on and taking off training device according to claim 13, wherein the eyeball model is softer than the face model.

15. 15. A contact lens putting on and taking off training device according to claim 14, wherein the eye socket portion of the face model is integrally formed with receiving portions protruding in the vertical direction from an inner peripheral surface of the eye socket portion on both the upper and lower sides of the eyeball model.

16. 16. A contact lens putting on and taking off training device as described in claim 15, wherein the eyelid model has grooves above the upper eyelid portion and below the lower eyelid portion, the grooves opening on the rear surface and into which the receiving portions of the face model are inserted.

17. 17. The contact lens putting on and taking off training device according to claim 15, wherein upper and lower inner faces of the receiving part are superimposed on a front half of the eyeball model.

18. 14. The contact lens putting on and taking off training device according to claim 12, wherein the face model has a nose part that protrudes forward to imitate a human nose.

19. The facial model is provided with left and right eye sockets, 14. A contact lens putting on and taking off training device according to claim 12, wherein the left and right eyelid models are attached to the left and right eye socket parts, respectively.

20. 20. The contact lens putting on and taking off training device according to claim 19, wherein the eyeball model can be attached to either the left or right eye socket portion.

21. 14. The contact lens putting on and taking off training device according to claim 12, further comprising a support member for supporting the face model at a predetermined height.

22. 14. The contact lens putting on and taking off training device according to claim 12, wherein the eyelid model is detachable from the face model.

23. 14. The contact lens putting on and taking off training device according to claim 12, wherein the eyeball model is detachable from the face model.

24. A facial model that imitates a human face, An eyelid model attached to an eye socket portion opening in the front of the face model; an eyeball model that is inserted into the eye socket portion of the face model and disposed between the upper eyelid portion and the lower eyelid portion of the eyelid model; A contact lens putting on and taking off training device comprising: A contact lens putting on and taking off training device, wherein a gap is provided between the lower eyelid portion of the eyelid model and the eyeball model, and the size of the gap in the central portion of the lower eyelid portion is 0.5 mm or more and 2.5 mm or less.

25. 25. The contact lens putting on and taking off training device according to claim 24, wherein the upper eyelid portion and the lower eyelid portion of the eyelid model have a hardness that allows them to come into contact with the eyeball model by pressing.

26. 26. The contact lens putting on and taking off training device according to claim 25, wherein the eyeball model is harder than the eyelid model.

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