초록 ▼

Transocular and periocular laser delivery system for treatment of eye diseases wherein a fiberoptic element is passed through a perforation made either by paracentesis of eyeball encapsulating tissue (i.e.-cornea, sclera) or by the fiberoptic element itself so that the fiber actually penetrates into

Transocular and periocular laser delivery system for treatment of eye diseases wherein a fiberoptic element is passed through a perforation made either by paracentesis of eyeball encapsulating tissue (i.e.-cornea, sclera) or by the fiberoptic element itself so that the fiber actually penetrates into a chamber therein. The penetrating fiber end is then juxtaposed to the tissue to be treated while the external fiberoptic end is coupled either to an excimer laser emitting ultraviolet radiation (in the range of 193 to 351 nanometers) or to certain lasers emitting infrared radiation, the radiated pulses therefrom being directed through the transocularly-positioned fiber to be absorbed by chromophores in the target tissue (cataractous lens, trabecular meshwork, vitreous membranes, tear duct occlusion) where removal by photoablation is effected. Photoablation by way of the fiberoptic element creates a portal for filtration of aqueous fluid in the case of glaucoma or allows removal of cataractous lens tissue, vitreous hemorrhage or membranes or other tissue occluding tear duct passages in a manner promoting controlled healing, minimizing inflammation and scarring.

대표청구항 ▼

A method for surgical treatment of the eye by laser radiation comprising the steps of: (a) passing one end of a fiberoptic element through a small perforation in an outermost encapsulating tissue of the eyeball until said one end of said fiberoptic element penetrates into the eye\s anterior chamber,

A method for surgical treatment of the eye by laser radiation comprising the steps of: (a) passing one end of a fiberoptic element through a small perforation in an outermost encapsulating tissue of the eyeball until said one end of said fiberoptic element penetrates into the eye\s anterior chamber, (b) transocularly advancing said one end of the fiberoptic element through the said anterior chamber until the penetrating end of said fiberoptic element is juxtaposed immediately adjacent targeted eye tissue to be treated, (c) coupling the opposite end of said fiberoptic element to a photoablative laser emitting radiation selected from the class consisting of (1) ultraviolet excimer radiation having a wave length of between about 193 to 351 nanometers and (2) infrared radiation having a wave length of about 2.8 to 3.0 microns and at a fluence level sufficient to produce photochemical tissue ablation and focussing the radiation being emitted from the penetrating end of the transocularly-positioned fiberoptic element upon the targeted tissue, and (d) subjecting the adjacent targeted tissue to ablative photodecomposition from the radiation while maintaining juxtaposition of the penetrating end of said fiberoptic element to effect photochemical removal of said targeted tissue.