OPHTHALMOLOGICAL MULTI-PURPOSE MEASURING DEVICE

Abstract

An ophthalmological measuring device comprising an ocular measuring unit (43) comprising a front face (40) provided with a frame encircling a translucent plate (10a) the size and curvature of which are suitable for covering the ocular field of said patient, a device (23) for providing uniform backlighting of the translucent plate, located behind the translucent plate, at least one camera equipped with an objective placed in line with a hole (14) in the translucent plate, one or more point light sources (46) in apertures on the edges of the translucent plate, for illuminating the eyes of the patient, and means (41) for fastening one or more additional ophthalmological measuring devices to the translucent plate.

Description

OPHTHALMOLOGICAL MEASUREMENT DEVICE VERSATILE technical field

[0001] The invention falls within the field of ophthalmological devices enabling measurements to be taken on patients' eyes. Previous technique

[0002] Ophthalmic devices are known in which patients must look at a particular point while a practitioner examines their eyes. Technical problem

[0003] To date, these ophthalmic devices do not offer great versatility. Description of the invention

[0004] This application relates to a versatile ophthalmic measurement device in that it combines several types of measurement devices and is usable in several configurations.

[0005] More specifically, the present application proposes an ophthalmic measurement device which includes an eye measurement unit comprising a front face with a frame surrounding a translucent plate of size and curvature adapted to cover the patient's field of vision, a translucent plate lighting device behind the translucent plate, at least one camera with a lens positioned in relation to a hole in the translucent plate, one or more point light sources in openings on the translucent plate to illuminate the patient's eyes and means for attaching one or more additional ophthalmic measurement devices received on the translucent plate.

[0006] The invention thus proposes a compact device equipped with several measuring means to perform several different examinations.

[0007] Preferably, the lighting device for the translucent plate behind the translucent plate includes an integration box diffusing light from a white and / or near-infrared light source.

[0008] The lighting is thus homogeneous across the translucent plate.

[0009] According to an advantageous embodiment, the point light sources include blue light-emitting diodes.

[0010] Such diodes are suitable for examinations under fluorescein.

[0011] According to a particular embodiment, the ophthalmic measurement device of the application is equipped with a complementary examination device consisting of a translucent frame carrying a target having at least one hole aligned with said camera lens, said frame having means for fixing complementary to the means for fixing said ophthalmic measurement device.

[0012] According to a first embodiment, the housing includes means for attaching it to a helmet positioned on a patient's head. These means may, in particular, be located under a second upper cover of the device and designed to cooperate with additional helmet attachment means.

[0013] According to a second alternative or complementary embodiment, the housing includes means for fixing to an ophthalmic table frame on which the patient leans.

[0014] The means of fixing the device to said ophthalmic table frame may include a top cover provided with housings for receiving the end fittings of the frame uprights.

[0015] According to an advantageous embodiment, the housing comprises at least one microprocessor-based electronic board including means for controlling lighting equipment and cameras, means for acquiring video or photographic data from the cameras, and computing means including one or more computer measurement programs comprising computer processing of the acquired video or photographic data, and a touchscreen integrated into the device for controlling the device according to the program(s). computer-based measurements and visualization of ophthalmic measurement results from computer processing performed by the electronic card.

[0016] The device of the invention thus provides an autonomous and versatile examination device.

[0017] The invention further proposes, according to a first embodiment, an ophthalmological measurement set comprising an ophthalmological measurement helmet positioned on the head of a patient and an ophthalmological measurement device attached to the helmet.

[0018] The invention also proposes, according to a second embodiment, an ophthalmological measurement set comprising a tabletop ophthalmological frame and an ophthalmological measurement device fixed to said frame.

[0019] The measuring device of the invention can thus be used in two configurations by changing an interface plate.

[0020] Brief description of the drawings

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

[0022] [Fig. 1] shows a perspective view of a first embodiment of an ophthalmic measurement set of the invention;

[0023] [Fig. 2] shows a detail of figure 1;

[0024] [Fig. 3] is a schematic view of part of the device of the invention;

[0025] [Fig. 4] shows a perspective view of a second embodiment of an ophthalmic measurement set of the invention;

[0026] [Fig. 5] shows a perspective view of an example embodiment of the device of the invention in relation to figure 4;

[0027] [Fig. 6] represents a translucent frame carrying a target usable within the framework of an embodiment of the invention. Description of the implementation methods

[0028] The drawings and description below contain, for the most part, elements of a definite nature. They can therefore not only serve to better explain the present invention, but also contribute to its definition, if necessary.

[0029] Reference is now made to Figure 1. In this figure, corresponding to a first embodiment of an ophthalmic measurement set of the invention, an ophthalmic measurement device 43 is mounted on an ophthalmic table frame 47.

[0030] The frame comprises uprights 44, a chin support 45, a support plate 50. The uprights 44 have their lower end fixed on the support plate 50, a vertical part receiving arms 45a for fixing the chin support 45 and a curved upper part 44a provided with downward-facing terminations 44b and fitting into housings 431 on an upper cover 43a of the ophthalmic measuring device for example screwed onto the housing 43.

[0031] The uprights can be fixed to the device using various traditional methods such as screws securing the ends of the uprights in the housings of the cover.

[0032] The ophthalmic measurement device comprises a housing 43 containing means for performing several types of ophthalmic measurements. These means include eye illumination devices. The device includes a diffuse illumination means consisting of a curved translucent plate 10a behind which is a homogeneous backlighting device 23 such as an integrating box schematically represented in Figure 3, enclosed at the rear of the housing 43, and point illumination means 46 shown in Figure 2 and distributed here on an upper and a lower edge of the translucent plate in openings 46a.

[0033] The backlighting device may include one or more 23a LEDs in white light, near-infrared light or other wavelengths depending on the ophthalmological examinations to be performed.

[0034] Point lighting options include light-emitting diodes (LEDs) and include blue LEDs suitable for examinations with fluorescein.

[0035] The lighting equipment is switched on and off independently by means of an electronic card 24 in the housing.

[0036] Another important element of the device is the presence of at least one camera, and preferably two cameras, to allow examinations of both eyes 101 of a patient 100. As shown in Figures 1 and 3, two cameras 21a, 22a are used. The cameras have their lenses 21, 22 arranged in holes 14a made in a central portion of the translucent plate 10a. These cameras are positioned so that their lenses are facing the eyes 101 of a majority of patients in order to film or photograph them.

[0037] The cameras are miniature cameras, for example 1 / 4” CCD sensor cameras with a resolution of 1920x1080 whose lenses are compatible with 14a holes from 10mm to 15mm.

[0038] The device is self-contained, and the housing shown schematically in Figure 3 includes at least one microprocessor-based electronic board 24. This board includes, as shown in the example: - means of controlling the lighting equipment 23, 46 and the cameras 21, 22, - means of acquiring video or photographic data from cameras, - computing resources adapted to carry out computer processing of acquired video or photographic data. - a 25" touchscreen integrated into the device and connected to the electronic board to allow an operator to control the device and view ophthalmic measurement results from the computer processing of data from the cameras carried out by the electronic board.

[0039] The microprocessor-based electronic card (24) includes, in a known manner, a processor, RAM, permanent storage memory with a portion for storing a device management program, a portion for storing a measurement program, and a portion for storing patient measurement data.

[0040] The measurement programs integrated into the electronic board are programs for performing ophthalmic measurements using various means of lighting and cameras to perform eye examinations on patients such as corneal examinations, ocular film rupture examinations or other examinations using means of lighting and cameras.

[0041] In this example, the electronic board includes a Wi-Fi module with an antenna 26, enabling communication with a device such as a tablet computer, programmed to mirror the information displayed on its screen 25. The board also includes a computer port 27, such as a USB port, which allows, for example, saving measurements to a remote computer system or updating the board's program(s) 24.

[0042] In the headset configuration, the unit can operate on an onboard battery, and in the rack-mounted configuration, the unit can be connected to an external power supply.

[0043] Figure 4 illustrates a second embodiment of an ophthalmic measurement system of the invention. According to this embodiment, the ophthalmic measurement device 43 is attached to a helmet 110 designed to cover the patient's head, thus providing improved tracking of the patient's eyes by the cameras. The helmet has a dial 112 that actuates a mechanism for tightening the patient's head. The ophthalmic device is attached to the helmet by means of attachments 51 located under an upper cover 43b of the housing. These means have tabs 51a that fit into complementary grooves in the helmet to secure the device to the helmet.

[0044] Like cover 43a, cover 43b can be screwed onto the housing.

[0045] According to Figure 5, the device includes means 41 for attaching a support for a complementary examination device. The support, in the example shown in Figure 6, is a frame or a removable translucent plate 16 carrying a target 10 provided with at least one hole 14 aligned with said camera lens, said frame including attachment means 18 complementary to the attachment means 41. The attachment means 18, 41 may be such as magnets or snap fasteners. The The support has 17 gripping ears which allow it to be easily positioned and removed depending on the examination to be performed. The ophthalmic measurement device of the invention can therefore be manufactured in two configurations, a tabletop device configuration and a helmet-mounted configuration from a standardized housing using an interface plate suitable for mounting on a frame or on a helmet.

[0046] The measurement device of the invention, which uses lightweight materials suitable for use on a helmet, is thus a modular device that combines several examination systems. This device, the subject of the following claims, is not limited to the examples shown and, for example, the point light sources shown on the edge of the translucent plate can also be positioned around the camera holes or elsewhere.

Claims

Demands

1. An ophthalmic measuring device characterized in that it comprises an eye measurement housing (43) including a front face (40) provided with a frame surrounding a translucent plate (10a) of size and curvature adapted to cover the ocular field of said patient, a lighting device (23) for the translucent plate behind the translucent plate, at least one camera (21, 22) equipped with a lens disposed in correspondence with a hole (14) in the translucent plate, one or more point light sources (46) in openings (46a) on the translucent plate to illuminate the patient's eyes and means for fixing (41) one or more additional ophthalmic measuring devices received on the translucent plate.

2. Ophthalmic measuring device according to claim 1, wherein the lighting device (23) of the translucent plate behind the translucent plate comprises an integrating box diffusing light from a white and / or near-infrared light source.

3. Ophthalmic measuring device according to claim 1 or 2, wherein the point light sources (46) comprise blue light-emitting diodes.

4. Ophthalmic measuring device according to any one of the preceding claims, equipped with a complementary examination device consisting of a translucent frame (16) carrying a target (10) having at least one hole (14) aligned with said camera lens, said frame having fastening means (18) complementary to the fastening means (41) of said ophthalmic measuring device.

5. Ophthalmic measuring device according to any one of the preceding claims, wherein the housing includes means for fixing (51) onto a helmet (110) positioned on the head of a patient.

6. Ophthalmic measuring device according to claim 5 wherein said fastening means are arranged under an upper hood (43b) of the device and intended to cooperate with complementary fastening means of the helmet.

7. An ophthalmic measuring device according to any one of the preceding claims, wherein the housing comprises means for attaching it to a tabletop ophthalmic frame (47) against which the patient leans.

8. An ophthalmic measuring device according to claim 7, wherein the means for attaching it to said tabletop ophthalmic frame (47) comprise an upper cover (43a) provided with recesses (431) for receiving the end fittings (44b) of the frame uprights.

9. Ophthalmic measurement device according to any one of the preceding claims, wherein the housing is a self-contained unit comprising at least one microprocessor-based electronic board (24) comprising means for controlling the lighting means and cameras, means for acquiring video or photographic data from the cameras and computing means comprising one or more measurement computer programs including computer processing of the acquired video or photographic data, a touch screen (25) integrated into the device for controlling the device according to the measurement program(s) and viewing ophthalmic measurement results from the computer processing carried out by the electronic board (24).

10. Ophthalmic measurement set comprising an ophthalmic measurement helmet (110) positioned on the head of a patient and an ophthalmic measurement device (43) according to any one of the preceding claims attached to the helmet.

11. Ophthalmic measuring assembly comprising a tabletop ophthalmic frame (47) and an ophthalmic measuring device according to any one of claims 1 to 9 fixed to said frame.