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OptiMedica


The PASCAL Photocoagulator is an integrated semi-automatic pattern scan 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 was developed by OptiMedica, an ophthalmic medical device company located in Silicon Valley (Sunnyvale, CA).

The PASCAL (PAtterned SCAnning Laser) method of photocoagulation was initially developed at Stanford University. OptiMedica founders worked together at Coherent, and based on their experience in the ophthalmic laser industry, recognized the need for improved safety, precision, comfort and speed of photocoagulation procedures for eye diseases.

Ophthalmic company, Topcon Corp. has distributed the PASCAL system since 2008, and acquired OptiMedica's retina and glaucoma technology in August 2010.

Most ophthalmic laser delivery systems include:

The Pascal system is fully integrated with a touch screen GUI, advanced slit lamp optics, slit lamp mounted micromanipulator, and ergonomic features for the physician and patient.

In scanning applications, a control system applies an electric current proportional to the desired location of a beam of light to a high speed, sensitive, limited rotation motor called a galvanometer (commonly referred to as a galvo). A scanner is a galvo with a mirror attached to it. When the current is changed, the scanner quickly steers the laser beam to the desired location. Closed loop circuits ensure that the desired position is precisely reached.

In Pascal, control selections such as pattern and spot size from the graphic user interface are translated into (F,X,Y) coordinates. Three scanners deliver laser light to the retina in multi-spot patterns by controlling the x-position (X), y-position(Y) and fiber selection(F) for the placement and size of the laser beam.


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