A new high-power biconcave contact lens for observation and coagulation of the posterior segment.

A wide-angle, high-power negative contact lens was designed for observation and coagulation of the retina and choroid. The new contact lens has a lateral magnification of 0.44 and a field of view of 64 degrees.

Internal sclerostomy with the Er:YAG laser using a gradient-index (GRIN) endoscope.

Background And Objective: To show that sclerostomy, a glaucoma filtering surgery, can be performed using an Er:YAG laser. Scarring at the filtering site, a recurrent problem, may be reduced through proper positioning of the sclerostomy by using an intraocular endoscope.

Materials And Methods: Ab interno full-thickness sclerostomies were performed on eye bank eyes with an Er:YAG laser through a custom made optical delivery system.