Digital optical device for imaged corneal cross-linking

Abstract

The invention provides a digital optical device for imaged corneal cross-linking. The device comprises an ultraviolet light source system, a collimation system, a beam modulation system, a projectionillumination system and a control system. The beam modulation system comprises a digital light projection chip with a micro mirror array, the digital light projection chip subdivides a collimated ultraviolet beam into a plurality of controllable small beams, and the control system controls the deflection of each micromirror of the digital light projection chip according to a predetermined manner and controls the ratio of a deflection time to a no deflection time in each unit time of each micromirror so as to control the illumination energy of each small beam in each unit time and produce illumination having different predetermined intensity distributions corresponding to different predetermined regions to achieve the refined and dynamic control of a corneal cross-linking region range and energy distribution. According to the optical device, the personalized treatment need of a cornea can be flexibly satisfied, and the therapeutic effect and efficiency of corneal cross-linking surgeriesare significantly improved.

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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