View source for Pascal Photocoagulator

The '''PASCAL Photocoagulator''' is an integrated semi-automatic pattern scan [[laser photocoagulation]] system designed to treat [[ocular disease]]s 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). 

OptiMedica manufactures a laser system for ocular diseases including [[diabetic retinopathy]]. 

==History==
The PASCAL (PAtterned SCAnning Laser) method of photocoagulation was initially developed at [[Stanford University]]. OptiMedica founders worked together at [[Coherent (company)|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.<ref>[http://www.retinajournal.com/pt/re/retina/fulltext.00006982-200603000-00024.htm RETINA - Fulltext: Volume 26(3) March 2006 p 370-376] Semi-Automated Pattern Scanning Laser for Retinal Photocoagulation</ref>

==Ophthalmic laser delivery systems==
Most ophthalmic laser delivery systems include:
*a laser source such as the [[Nd:YAG laser]] used in Pascal
*a delivery device such as a [[slit lamp]] or laser indirect ophthalmoscope (LIO)
*a control system for selecting power and duration
*a method for selecting spot size

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.

==Pascal Method - pattern scanning==
In scanning applications, a [[control system]] applies an electrical 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.

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(k)]] for treating [[vascular]] and structural abnormalities of the [[retina]] and [[choroids]] including:<ref>http://www.fda.gov/cdrh/pdf6/K062336.pdf</ref> 
*Proliferative and non proliferative [[diabetic retinopathy]]
*Choroidal neovascularization
*Branch and central retinal vein occlusion
*[[Age-related macular degeneration]]
*Lattice degeneration
*Retinal tears and detachments
*[[Iridotomy]]
*[[Iridectomy ]]
*Trabeculoplasty in angle closure and open angle [[glaucoma]]

Pascal photocoagulator also has [CE Mark] for international sale.

==Awards==
*In 2007, [[OptiMedica]] received a [[R&D 100 Award]] for the Pascal Photocoagulator. The award recognizes the innovative technology as one of the top 100 products introduced to the marketplace in the last year.
*The Pascal Photocoagulator was recognized with a 2007 Medical Design Excellence Award gold medal in the surgical equipment, instruments, and supplies category.<ref>[http://www.devicelink.com/mx/archive/07/07/mdea.html MX (MDEA Winners) Industry Takes a Bow - July/August 2007]</ref>

==References==
<references/>

==External links==
*[http://www.optimedica.com OptiMedica website]

[[category: Ophthalmology]]
[[category: Eye]]
[[category: Diabetes]]
[[Category:Ophthalmic equipment]]
[[Category:Companies based in Santa Clara, California]]
[[Category:Laser applications]]
[[Category:2Fix]]