Multipurpose ophthalmic measuring device

Abstract

An ophthalmic measurement device, comprising: an ophthalmic measurement unit (43) comprising a front face (40) provided with a frame surrounding a translucent plate (10a), the size and curvature of the translucent plate being suitable for covering the eye field of the patient; means (23) for providing uniform backlighting of the translucent plate, located behind the translucent plate; at least one camera equipped with an objective lens placed in line with a hole (14) in the translucent plate; one or more point light sources (46) in apertures on the edge of the translucent plate for illuminating the patient's eye; and means (41) for fastening one or more additional ophthalmic measurement devices to the translucent plate.

Description

Technical Field

[0001] The present invention relates to the field of ophthalmic devices for performing measurements on an eye of a patient. Background Art

[0002] Ophthalmic devices are known with which a patient must gaze at a specific point while a physician observes their eyes.

[0003] Technical issues

[0004] To date, these ophthalmic devices have not offered any remarkable versatility. Summary of the invention

[0005] The present application relates to an ophthalmic measurement device which is generic in the sense that it groups together several types of measurement devices and can be used in several configurations.

[0006] More precisely, the present application proposes an ophthalmic measurement device, which has: an ophthalmic measurement housing, which includes a front face provided with a frame surrounding a translucent plate, the size and curvature of which are suitable for covering the eye field of the patient; means for illuminating the translucent plate from behind; at least one camera, which has a lens placed in line with the hole in the translucent plate; one or more point light sources, which are in the openings in the translucent plate to illuminate the patient's eyes; and means for fixing one or more supplementary ophthalmic measurement devices received on the translucent plate.

[0007] The invention therefore proposes a compact device provided with several measuring means for carrying out several different examinations.

[0008] Preferably, the means for illuminating the translucent sheet from behind comprises an integrated box diffusing light from a white and / or near infrared light source.

[0009] The illumination is thus uniform at the level of the translucent plate.

[0010] According to an advantageous embodiment, the point light source comprises a diode emitting blue light.

[0011] These diodes are suitable for examination under fluorescein.

[0012] According to a particular embodiment, the ophthalmic measuring device of the present application is equipped with a complementary inspection device consisting of a translucent frame carrying a test pattern and provided with at least one hole aligned with the camera lens, said frame comprising fixing means complementary to those of the ophthalmic measuring device.

[0013] According to a first embodiment, the housing comprises means for fixing to a helmet positioned on the patient's head.The fixing means may in particular be arranged below the second upper cover of the device and are intended to cooperate with complementary fixing means of the helmet.

[0014] According to a second alternative or complementary embodiment, the housing comprises means for fixing to the frame of an ophthalmic table on which the patient rests.

[0015] The means for securing the device to the ophthalmic table frame may include an upper cover having seats for receiving the distal ends of the uprights of the frame.

[0016] According to an advantageous embodiment, the housing comprises at least one electronic board with a microprocessor, comprising means for controlling the illumination means and the camera, means for acquiring video or photographic data from the camera, and calculation means comprising one or more measurement computer programs, said measurement computer programs comprising computer processing of the acquired video or photographic data, a touch screen being integrated into the device in order to control the device according to said measurement computer programs and to display the results of the ophthalmic measurements from the computer processing carried out by the electronic board.

[0017] The device of the invention thus constitutes an autonomous and multipurpose inspection apparatus.

[0018] According to a first embodiment, the present invention further proposes an ophthalmic measurement assembly comprising an ophthalmic measurement helmet positioned on a patient's head, and an ophthalmic measurement device secured to the helmet.

[0019] According to a second embodiment, the present invention also proposes an ophthalmic measurement assembly comprising an ophthalmic table frame and an ophthalmic measurement device fixed to the frame.

[0020] The measuring device of the invention can thus be used in both configurations by changing the interface board. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, details and advantages of the present invention will become apparent upon reading the following detailed description and analyzing the accompanying drawings, in which:

[0022] [ Figure 1 ] shows a perspective view of a first embodiment of an ophthalmic measurement assembly of the present invention;

[0023] [ Figure 2 ]exhibit Figure 1 Details;

[0024] [ Figure 3 ] is a schematic diagram of a portion of the apparatus of the present invention;

[0025] [ Figure 4] shows a perspective view of a second embodiment of an ophthalmic measurement assembly of the present invention;

[0026] [ Figure 5 ]Show About Figure 4 A perspective view of an exemplary embodiment of the apparatus of the present invention;

[0027] [ Figure 6 ] shows a translucent frame carrying a test pattern that can be used in the context of an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following drawings and description mainly contain certain characteristic elements. Therefore, they can not only promote a better understanding of the present disclosure, but also contribute to its definition when appropriate.

[0029] View now Figure 1 In this figure, an ophthalmic measuring device 43 is mounted on an ophthalmic table frame 47, corresponding to the first embodiment of the ophthalmic measuring assembly of the present invention.

[0030] The frame comprises a column 44, a chin support 45 and a support plate 50. The column 44 has a lower end fixed to the support plate 50, a vertical part receiving arm 45a for fixing the chin support 45, and a curved upper part 44a with a tip 44b facing downwards and fitting into a seat 431 on an upper cover 43a of the ophthalmic measurement device, for example screwed to the housing 43.

[0031] The fixing of the posts to the device may be achieved by various conventional means, such as screws that fix the tips of the posts in seats in the cover.

[0032] The ophthalmic measurement device comprises a housing 43 which will contain means for performing several types of ophthalmic measurements. These means consist in particular of means for illuminating the eye. The means comprise diffuse illumination means consisting of a curved translucent plate 10a behind which there is a uniform backlighting means 23 enclosed behind the housing 43, for example Figure 3 An integrated box schematically shown in FIG; and a point illuminating member 46, which is Figure 2 4 and are here distributed over the upper and lower edges of the translucent plate in the opening 46a.

[0033] The backlight may include one or more LEDs 23a of white light, near infrared light, or other wavelengths, depending on the ophthalmic examination to be performed.

[0034] The spot lighting means are in particular light emitting diodes (LEDs) and include blue LEDs suitable for inspection using fluorescein.

[0035] The lighting components are switched on and off independently by means of an electronic board 24 in the housing.

[0036] Another important feature of the device is the presence of at least one camera, and preferably two cameras, in order to allow both eyes 101 of the patient 100 to be examined. Figure 1 and 3 In the example in FIG. 1 , two cameras 21 a, 22 a are used. The lenses 21, 22 of the cameras are placed in the holes 14 a formed in the middle part of the translucent plate 10 a. These cameras are positioned so that their lenses are in front of the eyes 101 of most patients so that they can be filmed or photographed.

[0037] The camera is a miniature camera, for example a camera with a 1 / 4CCD sensor with a resolution of 1920x1080, whose lens is compatible with an aperture 14a measuring 10mm to 15mm.

[0038] The device is autonomous, and Figure 3 The housing schematically shown in FIG. 2 comprises for this purpose at least one electronic board 24 with a microprocessor. According to the example, this board comprises:

[0039] - means for controlling the lighting means 23, 46 and the cameras 21, 22,

[0040] - Get the components of video or photographic data from the camera,

[0041] - computing means suitable for carrying out computer processing of the acquired video or photographic data,

[0042] A touch screen 25 integrated into the device and connected to the electronic board so as to allow the operator to control the device and to display the results of the ophthalmic measurements obtained by computer processing of the data from the camera generated by the electronic board.

[0043] The electronic board 24 with microprocessor comprises in a known manner a processor, a random access memory, a permanent storage memory with a storage section for a device management program, a storage section for a measurement program and a storage section for patient measurement data.

[0044] The measurement programs integrated into the electronic board are programs for performing ophthalmic measurements using various illumination means and cameras in order to perform eye examinations on patients, such as corneal examinations, examinations of tear film breakup, or other examinations using illumination means and cameras.

[0045] According to the example, the electronic board comprises a Wi-Fi module with an antenna 26 making it possible to communicate with an electrical device such as a tablet computer, programmed for example to provide a copy of the information present on the screen 25. The board further comprises a computer port 27 such as a USB port making it possible, for example, to save the measured values ​​on a remote computer system or to update the program on the board 24.

[0046] In the helmet configuration, the shell can be operated using an onboard battery, and in the frame mounted configuration, the shell can be connected to an external power supply.

[0047] Figure 4 A second embodiment of the ophthalmic measurement assembly of the invention is shown. According to this embodiment, the ophthalmic measurement device 43 is fixed to a helmet 110 intended to cover the patient's head, which enables better monitoring of the patient's eyes by the camera. The helmet has a thumb wheel 112, which actuates a tightening mechanism for the patient's head. The ophthalmic device is fixed to the helmet by fastening members 51 located below the upper cover 43b of the housing, these members comprising bosses 51a that fit into complementary grooves of the helmet in order to fix the device to the helmet.

[0048] Similar to the cover 43a, the cover 43b can be screwed onto the housing.

[0049] according to Figure 5 The device comprises a member 41 for fixing a support member of the supplementary inspection device. Figure 6 In the example shown, the support is a frame or a removable translucent plate 16 carrying the test pattern 10 and provided with at least one hole 14 aligned with the camera lens, the frame comprising fixing means 18 complementary to fixing means 41. The fixing means 18, 41 may be fixing means such as magnets or snap-on type fasteners. The support comprises clamping lugs 17 which allow easy positioning and removal of the support depending on the inspection to be performed.

[0050] Thus, the ophthalmic measurement device of the present invention can be manufactured in two configurations: a tabletop configuration and a helmet configuration, based on a standardized housing, by using an interface plate suitable for mounting on a frame or on a helmet.

[0051] The measuring device of the invention, using lightweight materials compatible with use on helmets, is thus a modular device that brings together several inspection systems. This device, being the subject of the appended claims, is not limited to the examples presented, and for example the point light sources presented on the edge of the translucent plate may also be positioned around the through hole of the camera or elsewhere.

Claims

1. An ophthalmic measuring device, characterized in that: It has: an ophthalmic measurement housing (43) comprising a front face (40) provided with a frame surrounding a translucent plate (10a) of a size and curvature suitable for covering the ocular region of a patient; means (23) for illuminating the translucent plate from behind; at least one camera (21, 22) provided with a lens placed in line with a hole (14) in the translucent plate; one or more point light sources (46) in an opening (46a) in the translucent plate for illuminating the patient's eye; and means (41) for fixing one or more supplementary ophthalmic measurement devices received on the translucent plate, Therein, the means (23) for illuminating the translucent plate from behind the plate comprises an integrated box diffusing light from a white and / or near infrared light source so as to provide uniform illumination at the level of the translucent plate.

2. The ophthalmic measuring device according to claim 1, characterized in that: The point light source (46) includes a diode emitting blue light.

3. An ophthalmic measuring device according to claim 1 or 2, equipped with a complementary checking device consisting of a translucent frame (16) carrying a test pattern (10) and provided with at least one hole (14) aligned with the camera lens, the frame comprising fixing means (18) complementary to the fixing means (41) of the ophthalmic measuring device.

4. The ophthalmic measuring device according to claim 1 or 2, characterized in that: The housing includes a member (51) for securing to a helmet (110) positioned on the patient's head.

5. The ophthalmic measuring device according to claim 4, characterized in that: The fixing means are arranged below the upper cover (43b) of the device and are intended to cooperate with complementary fixing means of the helmet.

6. The ophthalmic measuring device according to claim 1 or 2, characterized in that: The housing includes means for securing to an ophthalmic table frame (47) on which the patient rests.

7. The ophthalmic measuring device according to claim 6, characterized in that: The means for fixing to the ophthalmic table frame (47) comprises an upper cover (43a) provided with seats (431) for receiving the tips (44b) of the uprights of the frame.

8. The ophthalmic measuring device according to claim 1 or 2, characterized in that: The housing is a separate housing comprising at least one electronic board (24) with a microprocessor, the electronic board comprising means for controlling the lighting means and the camera, means for acquiring video or photographic data from the camera, and computing means comprising one or more measurement computer programs, the measurement computer programs comprising computer processing of the acquired video or photographic data, a touch screen (25) being integrated into the device in order to control the device according to the measurement programs and to display the results of the ophthalmic measurements from the computer processing carried out by the electronic board (24).

9. An ophthalmic measurement assembly comprising an ophthalmic measurement helmet (110) positioned on a patient's head, and an ophthalmic measurement device (43) according to any one of claims 1 to 8 fixed to the helmet.

10. An ophthalmic measurement assembly comprising an ophthalmic table frame (47), and an ophthalmic measurement device according to any one of claims 1 to 8 fixed to the frame.

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