1. Implantable Collamer lens(ICL)Dr Samuel Ponraj

2. ICL is made from 100 % biocompatible soft flexible gel lensThe material porcine Collagen is polymerised with HEMA Hence collagen copolymer = CollamerPosterior chamber Phakic IOL model 3. History Fathers of Phakic IOL Choyce,Strampelli, Barraquer conduted first ever trials using AC refractive lenses to correct high myopia in 1950s. But due to unacceptable complications such as loss of corneal endothelial cells,iris atrophy, PAS , these especially the angle supported lenses were phased out of the market. 4. First model made by Fyodorov in 1980s in Russia of a collar button configuration. First implant in Europe in 1993. Concept of soft phakic lens. 5. This material of Collamer was made by STAAR Visian Surgicals which provide good biocompatibility ,Optical capability, with a lens resting behind the iris in ciliary sulcus. 6. Prerequisites Residual bed after LASIK < 250 microns Initial Corneal thickness < 480 microns Stable refraction