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 was developed by OptiMedica, an ophthalmic medical device company located in Silicon Valley.
History
The PASCAL 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.
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. 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 coordinates. Three scanners deliver laser light to the retina in multi-spot patterns by controlling the x-position, y-position and fiber selection for the placement and size of the laser beam. The use of a FPGA from National Instruments enables fast scanning speed and a short response time of 4 microseconds for critical measurements and controlled feedback.
Indications for use
Pascal Photocoagulator was approved in 2005 by the U.S. Food and Drug Administration through a 510 for treating vascular and structural abnormalities of the retina and choroids including:
Pascal photocoagulator also has for international sale.
Awards
In 2007, OptiMedica received a R&D 100 Award for its work on the Pascal Photocoagulator. The Pascal Photocoagulator received a Medical Design Excellence Award gold medal in 2007 and a Wall Street JournalTechnology Innovation award in 2008.
