Experimental Studies on the Sterilization of The Soft Contact Lens.

Kim, San Bae

Original Article

Journal of the Korean Ophthalmological Society 1974;15(1):9-15.
Published online January 1, 1974.

Experimental Studies on the Sterilization of The Soft Contact Lens.

San Bae Kim

Department of Ophthalmology, College of Medicine, Seoul National University, Seoul, Korea.

연성 (軟性) 콘택트렌즈의 멸균에 대한 실험적 연구

김산배 ( San Bae Kim )

Abstract

Mycon-soft lenses (made by Tokyo contact lens Co., Japan) were contaminated experimentally with coagulase positive staphylococcus aureus and pseudomonas aeruginosa and sterilizing effects of some disinfectants (3% H2O2, 6% H2O2, 0.1% Benzalkonium and 1:1000 Merthiolate solutions) on those contaminated lenses were studied. The following results were obtained: 1. SCL contaminated with staphylcoccus were sterilized by soaking in 3% H2O2, 6% H2O2, or 1:1000 Merthiolate solution over 15 minutes, and in 0.1 Benzalkonium over 60 minutes. 2. SCL contaminated with pseudomonas aeruginosa were sterilizd by soaking in 6% H2O2 over 15 minutes, in 1:1000 MerthioJate solution over 60 minutes, in 3% H2O2 over 60 minutes, but no sterilization was obtained by soaking in 0.1 % Benzalkonium solution for less than 180 minutes. 3. No signs of irritation were noted on rabbit corneas fitted with SCL after soaking in 3% H2O2 or 6% H2O2 for 15 minutes followed by soaking in 20cc of normal saline for 15 minutes.