Soft corneal contact lens with identification

Abstract

The utility model provides a soft corneal contact lens with a mark. The soft corneal contact lens comprises a soft corneal contact lens, the soft corneal contact lens is provided with a mark used for distinguishing the front face and the back face of the soft corneal contact lens. Corresponding marks are arranged on the soft corneal contact lens, the front face and the back face of the soft corneal contact lens can be accurately judged according to the positions of the marks before the soft corneal contact lens is used, and the soft corneal contact lens is worn on the eyes of a patient with the front face facing upwards; when the corneal contact lens is applied to a vitreous body operation, the consistent clear view is maintained, if the definition of the view is reduced, the clear operation view can be continuously maintained only by flushing the surface of the corneal contact lens with a small amount of balanced salt solution, and an object image in the operation view is not obviously deformed when the sclera is jacked and pressed and the eyeball is rotated.

Description

TECHNICAL FIELD

[0001] The utility model relates to corneal contact lens technical field, specifically a soft corneal contact lens with mark. BACKGROUND

[0002] Modern minimally invasive vitreous surgery refers to the case without cutting the ball conjunctiva, using special sleeve needle in the ciliary body flat through the ball conjunctiva and sclera direct puncture into the vitreous cavity to establish three channels, all surgical instruments are through micro sleeve into the vitreous cavity and carry out surgical operation. The operation has the advantages of small trauma, incision suture, postoperative inflammation reaction light and short operation time. It has been carried out in ophthalmology, and the indications cover almost all vitreous and retinal diseases and part of lens diseases that need surgical treatment in ophthalmology.

[0003] The wide application of non-contact wide-angle lens in modern minimally invasive vitreous surgery significantly improves the efficiency and postoperative effect of vitreous surgery. However, compared with contact wide-angle lens, it still has the following shortcomings: 1. The cornea is exposed to air, which is easy to dry and affect the clarity of the surgical field; 2. The assistant needs to constantly flush the corneal surface with balanced salt solution (BSS) during the operation, with an average flushing interval of 30-60 seconds to maintain the clarity of the surgical field. However, the operation is often limited by the proficiency of the assistant and the complexity of the operation, resulting in uneven liquid coating or droplets splashing on the wide-angle lens surface, thereby affecting the clarity of the surgical field; 3. With the extension of the operation time, the corneal epithelium edema is aggravated, which makes the operator lose the clear surgical field, and then the corneal epithelium has to be scraped off, causing temporary or continuous damage to the ocular surface, which has a significant impact on the recovery of postoperative visual acuity and the improvement of comfort.

[0004] To solve the above technical problems, the applicant applied for a patent with patent number CN217886361U, which specifically discloses a corneal bandage lens (corneal contact lens) comprising: a corneal bandage lens (corneal contact lens) body; a silicon hydrogel layer arranged at the edge of the corneal bandage lens (corneal contact lens) body along the circumference of the corneal bandage lens (corneal contact lens) body to increase the thickness at the edge, thereby preventing the edge of the corneal bandage lens (corneal contact lens) from curling during surgery and affecting the clarity of the surgical field. When the corneal bandage lens (corneal contact lens) provided by the present solution is applied in vitreous surgery, the clarity of the surgical field can be maintained for a longer period of time. If the clarity of the field of view decreases, only a small amount of balanced salt solution needs to be used to flush the surface of the corneal bandage lens (corneal contact lens) to continue to maintain a clear surgical field. In addition, when the sclera is pressed and the eyeball is rotated, the image in the surgical field does not deform significantly. By arranging a silicon hydrogel layer at the edge of the corneal bandage lens (corneal contact lens) body, the edge curling of the corneal bandage lens (corneal contact lens) body can be effectively prevented, thereby ensuring the clarity of the doctor's field of view and improving the protection effect of the corneal bandage lens (corneal contact lens) body on the cornea.

[0005] However, the applicant found in clinical application that some doctors easily confused the front and back of the corneal bandage lens (corneal contact lens) after obtaining the cut corneal bandage lens (corneal contact lens), and if the back of the corneal bandage lens (corneal contact lens) is attached to the patient's eye, it will cause damage to the patient's eye. In addition, after the cornea is attached to the back, the edge of the corneal bandage lens (corneal contact lens) is easily curled during surgery. SUMMARY

[0006] The purpose of the present application is to provide a soft corneal contact lens with an identification mark to solve the problem of being unable to accurately distinguish the front and back of the corneal contact lens as described in the background art.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0008] In a first aspect, the present application provides a soft corneal contact lens with an identification mark, comprising: a soft corneal contact lens;

[0009] An identification mark is provided on the soft corneal contact lens to distinguish the front and back of the soft corneal contact lens.

[0010] Optionally, the identification mark is provided on the front and / or back and / or inside of the soft corneal contact lens to distinguish the front and back of the corneal bandage lens.

[0011] Optionally, the mark is any one or a combination of the following: a line, a letter, a number, a figure, a character, an indentation, a cut mark, a notch, an internal mark, which is visible to the naked eye or under a microscope, and the number is one or more.

[0012] Optionally, the shape of the contact lens is similar to a hemisphere.

[0013] Optionally, when the cross section is circular as viewed from above, the outer diameter of the soft contact lens (1) is in the range of 8-20mm.

[0014] Optionally, the central thickness of the soft contact lens is in the range of 0.03-0.15mm.

[0015] Optionally, the cross-sectional shape of the soft contact lens is a circular arc.

[0016] Optionally, the material of the soft contact lens is any one of the following: a high oxygen permeability silicon hydrogel material, a polymethyl methacrylate hydroxyethyl ester, a non-ionic material, and a common hydrogel material.

[0017] Optionally, it further comprises a thickened edge of the soft contact lens, which is arranged at the edge of the soft contact lens in the circumferential direction to increase the thickness of the edge, thereby preventing the edge of the soft contact lens from curling during surgery.

[0018] In a second aspect, the application provides an application of the soft contact lens with a mark, which is applied in vitreous surgery.

[0019] Compared with the prior art, the soft contact lens with a mark provided by the application has the following beneficial effects: the mark on the soft contact lens can be used to accurately determine the front and back of the soft contact lens before use, and the front can be worn on the eye of a patient, so that a clear surgical field can be maintained for a long time when the soft contact lens with a mark is applied in vitreous surgery, and if the clarity of the surgical field decreases, the surgical field can be maintained by flushing the surface of the contact lens with a small amount of balanced salt solution, and the image in the surgical field is not obviously deformed when the sclera is pressed and the eyeball is rotated. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic view of the outer structure of a soft contact lens with a mark.

[0021] Figure 2 It is a schematic view of the inner structure of a soft contact lens with a mark.

[0022] Figure 3 Figure 4 is a schematic view of the inner structure of another soft corneal contact lens with an identification.

[0023] Figure 4 Figure 5 is a schematic view of the lateral structure of another soft corneal contact lens with an identification.

[0024] Figure 5 Figure 6 is a schematic view of the lateral structure of another soft corneal contact lens with an identification.

[0025] In the figure: 1. soft corneal contact lens; 3. identification; 2. silicone hydrogel layer DETAILED DESCRIPTION

[0026] Various exemplary embodiments, features, and aspects of the present application will be described herein in detail with reference to the drawings. Like reference numerals in the drawings denote the same or similar elements. Although various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0027] The term "exemplary" is used herein in the sense of being an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

[0028] In addition, numerous specific details are given in the following detailed description in order to provide a thorough understanding. Those of ordinary skill in the art will realize that the application can be practiced without certain specific details being presented. In some instances, well-known methods, procedures, components, and elements have not been described in detail in order to avoid obscuring aspects of the application.

[0029] Reference will now be made to Figures 1-5 In a first aspect, the present application provides a soft corneal contact lens with an identification, comprising: a soft corneal contact lens 1; and an identification 3 arranged on the soft corneal contact lens 1 to distinguish the front and back of the soft corneal contact lens 1.

[0030] In the present embodiment, the soft corneal contact lens 1 described above can be obtained by machining a purchased corneal contact lens, and can be obtained by machining a soft corneal contact lens 1 with different diameters using corneal trephines with different diameters, i.e. the soft corneal contact lens 1 in the present solution. The shape of the soft corneal contact lens 1 described above is similar to a hemisphere, and the outer diameter thereof can be set according to the actual eye size of a patient, and the present solution does not limit the outer diameter of the soft corneal contact lens 1 described above.

[0031] In this embodiment, the soft corneal contact lens 1 is applied in vitreous surgery, and the clear time of the surgical field is obviously prolonged, generally more than 10 minutes. If the clarity decreases, a small amount of balanced salt solution can be used to flush the surface of the soft corneal contact lens 1 to continue to maintain the clarity of the surgical field. When the sclera is pressed and the eyeball is rotated, the image in the field of view is not deformed obviously, which improves the efficiency of the surgery and expands the clinical application range of the existing soft corneal contact lens 1.

[0032] In a specific embodiment, the mark 3 is engraved on the front and / or back of the soft corneal contact lens 1, so as to distinguish the front and back of the soft corneal contact lens 1.

[0033] In this embodiment, the mark 3 described above can be provided on the front of the soft corneal contact lens 1, or on the back of the soft corneal contact lens 1, or on both the front and back of the soft corneal contact lens 1. In this application, the purpose of providing the mark 3 is to facilitate the medical staff to accurately distinguish the front and back of the soft corneal contact lens 1 when using it. Further, the size of the mark 3 described above can be determined according to the actual use requirements of the medical staff, which can be visible to the naked eye or can be found under a microscope. The specific size is not limited in this application.

[0034] Further, the mark 3 described above can be any one or a combination of more than one of a line, a letter, a number, a figure, a character, an indentation, a cut mark, an engraved mark, and an internal mark, which can be one or more. For example, "front" can be engraved on the front of the soft corneal contact lens 1, or "back" can be engraved on the back of the soft corneal contact lens 1; or "front" can be engraved on the front of the soft corneal contact lens 1, and "back" can be engraved on the back of the soft corneal contact lens 1; of course, the mark 3 described above can also be a number, for example, "1" represents the front, and "2" represents the back; further, the mark 3 described above can also be a letter, for example, "a" represents the front, and "b" represents the back, and so on. Alternatively, the mark 3 described above can be a figure, such as a "square" representing the front and a "circle" representing the back, and so on. The above examples are not a limitation on the mark 3 in this application, but are only for users to understand more easily. The mark 3 in this application can be various, and users can assign different front and back definitions to different marks 3. The mark 3 described above is not limited in this application. The purpose of providing the mark 3 described above in this application is to facilitate the user to distinguish the front and back of the soft corneal contact lens 1 when using the soft corneal contact lens 1 provided in this application.

[0035] In this embodiment, as to how to increase the mark 3, it can be that the manufacturer carves the mark 3 when the corneal contact lens is manufactured, or the user can carve the mark after the soft corneal contact lens 1 is obtained by corneal trephination, for example, a sterile scalpel can be used to lightly scratch the front of the soft corneal contact lens 1, and the like, which is not limited in the present application.

[0036] In a specific embodiment, the shape of the soft corneal contact lens 1 is similar to a hemisphere. When viewed from above, the cross section is circular, and the outer diameter of the soft corneal contact lens 1 is in the range of 8-20 mm, and the thickness is in the range of 0.03-0.15 mm.

[0037] In a specific embodiment, the cross-sectional shape of the soft corneal contact lens 1 is arc-shaped. By setting the cross-sectional shape of the corneal bandage lens soft corneal contact lens 1 to be arc-shaped, the eye can be better fitted, thereby improving the protection of the cornea.

[0038] Please refer to Figure 1 、 Figure 2 , Figure 1 The provided soft corneal contact lens 1 has an outer diameter of 10.5 mm, and the central thickness of the contact lens is about 0.09 mm.

[0039] In a specific embodiment, the material of the soft corneal contact lens 1 is any one of high-oxygen-permeable silicone hydrogel material, polymethyl methacrylate hydroxyethyl, non-ionic material, and ordinary hydrogel material.

[0040] In this embodiment, a plurality of materials of the soft corneal contact lens 1 are provided, and as a preferred embodiment, the high-oxygen-permeable silicone hydrogel material is the most suitable. The advantages of silicone hydrogel are: balancing high oxygen permeability and comfort, the silicone hydrogel material can maintain the softness and comfort of the hydrogel, and at the same time, the oxygen permeability of the lens is improved; the elastic modulus of the silicone hydrogel lens is relatively high, and the performance of maintaining the shape is good.

[0041] It can be understood that the soft corneal contact lens 1 made of other materials can also be applied in vitreous surgery to prolong the clarity of the surgical field. In the present application, only through the applicant's repeated experiments, it is found that the soft corneal contact lens 1 made of high-oxygen-permeable silicone hydrogel material is the best for prolonging the surgical field in vitreous surgery.

[0042] In another specific embodiment, a silicone hydrogel layer 2 is further included, which is arranged at the edge of the soft corneal contact lens 1 along the circumference of the soft corneal contact lens 1, so as to increase the thickness of the edge, thereby preventing the edge of the soft corneal contact lens 1 from curling during surgery.

[0043] In this embodiment, please refer to Figures 3-5As shown, the above-mentioned silicone hydrogel layer 2 can be directly bonded or integrally formed at the edge of the soft corneal contact lens 1, as a preferred mode, the edge of the silicone hydrogel layer 2 can be flush with the edge of the soft corneal contact lens 1, thereby effectively preventing the edge of the soft corneal contact lens 1 from curling, thereby affecting the clarity of the surgical field, and avoiding reducing the protection of the soft corneal contact lens 1 to the cornea. By providing the silicone hydrogel layer 2 at the edge of the soft corneal contact lens 1, the edge of the soft corneal contact lens 1 can be effectively prevented from curling, ensuring the clarity of the surgical field, and improving the protection of the soft corneal contact lens 1 to the cornea.

[0044] In a second aspect, the application provides an application of the soft corneal contact lens with an identifier. The soft corneal contact lens with an identifier is applied in vitreous surgery. After removing the soft corneal contact lens 1 after vitreous surgery, the corneal epithelial integrity and the degree of corneal epithelial edema of the surgical eye are better than those of the traditional balanced salt solution flushing group. It can be seen that the existing soft corneal contact lens 1 for treatment has a clear protective effect on the cornea during vitreous surgery.

[0045] It is obvious to those skilled in the art that the present application is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0046] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. An identification-bearing soft corneal contact lens, characterized in that, The utility model relates to a soft corneal contact lens (1) comprising: An identification (3) is arranged on the soft corneal contact lens (1) to distinguish the front and back of the soft corneal contact lens (1); Further comprising a silicon hydrogel layer (2) arranged at the edge of the soft corneal contact lens (1) along the circumference of the soft corneal contact lens (1) to increase the thickness at the edge and prevent the edge of the soft corneal contact lens (1) from curling during surgery. The identification (3) is engraved on the front and / or back and / or inside of the soft corneal contact lens (1) to distinguish and identify the front and back of the soft corneal contact lens (1).

2. The soft, marked contact lens of claim 1, wherein, The identification (3) is any one or a combination of multiple of the following: lines, letters, numbers, patterns, characters, indentations, cuts, engravings, internal marks, which are visible to the naked eye or under a microscope, and the number is one or more.

3. The soft, marked contact lens of claim 1, wherein, The shape of the soft corneal contact lens (1) is similar to a hemisphere.

4. The soft, marked contact lens of claim 1, wherein, When viewed from above, the cross-section is circular, and the outer diameter of the soft corneal contact lens (1) ranges from 8 to 20 mm.

5. The soft, marked contact lens of claim 4, wherein, The central thickness of the soft corneal contact lens (1) ranges from 0.03 to 0.15 mm.

6. The soft, marked contact lens of claim 1, wherein, The cross-sectional shape of the soft corneal contact lens (1) is a circular arc.

7. The marked soft corneal contact lens of claim 1, wherein, The material of the soft corneal contact lens (1) is any one of the following: high oxygen permeability silicon hydrogel material, polymethyl methacrylate hydroxyethyl ester, non-ionic material, and ordinary hydrogel material.

8. The marked soft corneal contact lens of claim 1, wherein, ​

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