Focusing Optical Applied System to Nd:YAG Laser Disruptor for Ophthalmology

In this paper, we design an optical system that can adjust YAG laser focus, and it can avoid the damage of intraocular lens in the YAG laser surgery. Focusing optical system uses beam expander principle, uses the spiral cam and the worm as adjust part, which can move YAG laser focus from -500 μm to +500 μm on the target tissue.