Assessment of Implantable Collimar Lens Efficacy and Short Term Complications in Treatment of Simple Myopia and Compound Myopic Astigmatism

Abstract

efractive errors and consequent spectacles wear have always been cumbersome for many persons. Development of refractive surgeries in the last decades was established in response to patient’s needs. Corneal LASER refractive procedures are always the first choice, either for patients or surgeons. However, corneal refractive surgeries have their limitations, including abnormal corneal parameters or a high refractive error. An implantable lens consisting of a biocompatible collagen copolymer (Visian Implantable Collamer lens (ICL); STAAR Surgical, Nidau, Switzerland) was developed in 1993 as a posterior chamber intra ocular lens (PcIOL) and was named the implantable contact lens, as initially it was thought that it would come into contact with the anterior surface of the crystalline lens. Staar (Monrovia, CA, USA) patented this material, made of 60% poly-hydroxyethylmethacrylate (HEMA), water (36%), benzophenone (3.8%), and 0.2% porcine collagen, and named it the Collamer (collagen-copolymer). These lenses have gained popularity as an alternative for LASER corneal refractive surgeries for subjects