A digital optical device for imaging corneal crosslinking

Abstract

A digital optical device used for patterning corneal cross-linking, comprising an ultraviolet light source system and a collimation system (1), a light beam modulation system (3), a projection illumination system (4) and a control system; the light beam modulation system (3) comprises a digital light projection chip that is provided with a micro-reflector array, the digital light projection chip subdividing a collimated ultraviolet light beam into a plurality of controllable small light beams; the control system controls the deflection or otherwise of each micro-reflector of the digital light projection chip according to a predetermined manner, and controls the ratio of deflection time to non-deflection time per unit time of each micro-reflector so as to control the illumination energy per unit time of each small light beam, thus generating illumination having different predetermined intensity distributions corresponding to different predetermined regions, thereby achieving refined and dynamic control of the range and energy distribution of a corneal cross-linking region. The device may flexibly meet the needs for personalized treatment of the cornea and significantly improve the therapeutic effect and efficiency of corneal cross-linking surgery.

Description

technical field [0001] The invention relates to an ophthalmic medical device, in particular to a digital optical device for imaging corneal cross-linking. Background technique [0002] The cornea is a transparent tissue at the front of the eyeball and plays an important role in the eyeball optical system. Its refractive power accounts for more than half of the eyeball's refractive system. A slight change in the shape of the cornea can cause a large change in vision. Keratoconus is an ocular disease in which the cornea is dilated and the center thins and protrudes forward, making the cornea appear conical in shape. It changes the shape of the cornea in a large range and causes a sharp decline in vision. Myopia, hyperopia and astigmatism are all ophthalmic diseases involving the refractive power of the eyeball system. By changing the refractive power of the cornea, the disease can be alleviated and the effect of restoring vision can be achieved. [0003] Corneal cross-linking...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to overcome the deficiency that the optical system of the existing corneal cross-linking instrument cannot well meet the individualized treatment needs of keratoconus patients, and provide a digital optical device for imaging corneal cross-linking, which can flexibly meet individual needs Treatment needs and significantly improve the therapeutic effect and efficiency of corneal cross-linking surgery

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