Ophthalmic equipment and lighting control method

Abstract

To provide an ophthalmologic apparatus and an illumination control method enabling more accurate observation of a subject eye by a simple operation, by suppressing occurrence of a shadow on eyelids, while avoiding shading of illumination light of background illumination by an illumination system.SOLUTION: An ophthalmologic apparatus includes an illumination system supported rotatably around a subject eye, while directing a direction of radiation of first illumination light toward the subject eye, an observation system provided on the opposite side to an arrangement position of the subject eye with respect to the illumination system, and light emission parts for background illumination provided in the observation system, on lower positions than the subject eye. In the ophthalmologic apparatus, the light emitting parts are dimmed and controlled according to a relative position between the illumination system and the light emitting parts.SELECTED DRAWING: Figure 10

Claims

1. An illumination system supported so as to be rotatable around the eye under examination, with the direction of the first illumination light directed towards the eye under examination, An observation system is provided on the opposite side of the position of the eye to be examined from the illumination system, Multiple background light-emitting units are provided in the observation system in the left-right direction, which is the movable direction of the illumination system as viewed from the eye side, located below the eye being examined. An angle detection device for the illumination system relative to the observation system, Equipped with a control device, The control device is An ophthalmic device that controls the dimming of the light-emitting part so as to illuminate one side that is not blocked by the illumination system and turn off the other side that is blocked by the illumination system, depending on the relative position of the illumination system and the light-emitting part.

2. The aforementioned lighting system is The system comprises a slit lamp that emits the first illumination light, and a deflection unit that deflects the first illumination light toward the eye under examination. The control device is When observing the eye under examination, the first illumination light is shone onto the eye from a position off the observation axis connecting the eye under examination and the light-receiving part of the observation system. The ophthalmic apparatus according to claim 1.

3. The control device is The light-emitting unit is dimmed to suppress changes in the amount of second illumination light reaching the eye under examination from the light-emitting unit, regardless of the position of the illumination system. The ophthalmic device according to claim 1 or claim 2.

4. An illumination system supported so as to be rotatable around the eye under examination, with the direction of the first illumination light directed towards the eye under examination, An observation system is provided on the opposite side of the position of the eye to be examined from the illumination system, Multiple light-emitting units are provided in the observation system in the left-right direction, which is the movable direction of the illumination system as viewed from the eye side, located below the eye being examined. An angle detection device for the illumination system relative to the observation system, Equipped with a control device, The control device is An ophthalmic device that adjusts the light output of the light-emitting unit so as to suppress changes in the amount of second illumination light reaching the eye under examination from the light-emitting unit, regardless of the position of the illumination system.

5. An illumination system supported so as to be rotatable around the eye under examination, with the direction of the first illumination light directed towards the eye under examination, An observation system provided on the opposite side of the position of the eye to be examined from the illumination system, and multiple background illumination light-emitting units provided in the observation system at a position below the eye to be examined and in the left-right direction which is the movable direction of the illumination system as viewed from the eye to be examined, An angle detection device for the illumination system relative to the observation system, A method for controlling the illumination of an ophthalmic device equipped with a control device, The control device, A lighting control method that controls the dimming of the light-emitting part so that, according to the relative position of the lighting system with respect to the observation system, one side that is not blocked by the lighting system is illuminated, and the other side that is blocked by the lighting system is turned off.

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