Device and method for laser assisted deep sclerectomy

Abstract

An ophthalmic laser ablation system is described with various optional features, some especially suitable for non-penetrating filtration on an eye. In one example, focusing of an ablation laser uses a movable lens coupled to a pair of converging light sources, which converge at the focal distance of the lens. In another example, laser ablation settings are selected for optimal ablation and minimal amount of thermal damage of a layer of percolating scleral tissue.

1 - 91 . (canceled) 
     
     
         92 . A laser ablation control system, comprising:
 (a) a card reader;   (b) a laser beam controller;   (c) circuitry configured to control one or both of said laser beam controller and a laser beam source in accordance with data read by said card reader to perform ablation.   
     
     
         93 . The system according to  claim 92 , wherein said circuitry prevents a firing of an ablation laser by said laser beam controller. 
     
     
         94 . The system according to  claim 92 , wherein said circuitry prevents a scanning of an ablation laser by said laser beam controller. 
     
     
         95 . The system according to  claim 92 , wherein said circuitry limits a time of activation of said controller. 
     
     
         96 . The system according to  claim 95 , wherein said circuitry allows reuse of a card and debts a later read card.