Discoloration of hydrogel contact lenses under standard care regimens

Abstract

Four types of hydrogel contact lenses (N = 164) were subjected to in vivoand in vitrostandard care regimens for a period of six months. Lens care variables included: (1) heat disinfection in Bausch and Lomb Sensitive Eyes saline solution; (2) heat disinfection in Cooper Unisol 4 sterile, nonpreserved saline solution; (3) American Optical/Reichert Lensept disinfection and storage in Sensitive Eyes saline; and (4) Lensept disinfection and storage in Unisol 4 saline. The study was conducted to determine the conditions under which lens discoloration occurs. The 45% Bufilcon A (55% water) lens showed significant discoloration in vivowith both heat and Lensept disinfection when rinsed and soaked in sorbate-preserved saline, and in vitrowhen heat disinfected in sorbate-preserved saline. © 1986 American Academy of Optometry.