High Quality Content by WIKIPEDIA articles! The PASCAL Photocoagulator is an integrated semi-automatic pattern scan laser photocoagulation system designed to treat ocular diseases using a single shot or predetermined pattern array. The device is for ophthalmologists, particularly those that focus in vitreo-retinal surgery, a type of eye surgery. It is produced by OptiMedica, an ophthalmic medical device company located in Silicon Valley (Santa Clara, CA).