Phacoemulsification with or without Trypan blue application and influence on iris pattern recognition system

Biometric systems of iris analysis and iris identification are among the most accurate and precise biometric methods. Since cataract is the leading cause of blindness in the world, and cataract surgery with intraocular lens implantation is the most common ophthalmologic surgery, its influence on the iris is of utmost importance, as subsequently on iris identification. The main surgical method for the cataract surgery today is ultrasound phacoemulsification. For reasons of easier visualisation of the anterior lens capsule and performance of phacoemulsification, vital dye trypan blue is used in eyes with white, mature cataracts. The aim of the study was to research the influence of ultrasound phacoemulsification cataract surgery on iris pattern recognition system and to determine the influence of vital dye trypan blue which is used in white and mature cataract surgery on iris pattern recognition system and on the percentage of correspondence in the group of patients who underwent phacoemulsification surgery.