Comparison of Refractive Error and Progression of after-cataract Depending on the Angulation of Intraocular Lens

PURPOSE: Intraocular lens with angulation seemed to prevent the development of posterior capsular opacification. We studied whether this angulation could inhibit capsular opacity following in the bag implantation of posterior chamber lens. METHODS: One hundred fifty eight eyes of 140 patients with normal axial lengths (range: 22.0~26.0 mm) were included. The difference between the preoperative goal diopter and actual postoperative diopter was measured. Eyes were divided into 5 groups according to the type of intraocular lens. In order to determine the effect of angulation on capsular opacity, the time period until YAG laser capsulotomy was compared between the angled and plano intraocular lenses. RESULTS: No significant difference was seen in the goal diopters among all groups during the entire follow-up period from 1 day to 6 months. The number of YAG laser capsulotomy was significantly less and the period until YAG laser capsulotomy was significantly longer in the group using the intraocular lens with 10 degrees angulation (Soflex R , Chiron C31UB) than in the group using the intraocular lens without angulation (STAAR AQ2003V). CONCLUSIONS: The results of the present study showed that it would be beneficial to use an angulated IOL for the suppression of capsular opacity. A high goal diopter could be obtained without changing the refractory power when using angulated IOL.

Results of Population-based Questionnaire on the Symptoms and Life styles Associated with Contact Lens

The purpose of this study is to gather useful data in developing educational approach to the public about correct understanding and use of contact lenses by investigating public appreciation about contact lenses, information about contact lens wear, personal habits, side effects, and medical knowledge about contact lenses. Total 611 people were surveyed at various locations, university hospitals(44%), general hospitals(6%), and general clinics(50%). The questionnaires were distributed to pre-selected people whose visit to the medical facility was contact lens related(prescription, regular exams)and to those who had refractive errors among the outpatients. The results of this survey show that many had incorrect knowledge about purchase, prescription, side effects and method of contact lens use. In conclusion, nationwide education on correct understanding and purchase, prescription, side effects of contact lenses is needed.

Four Cases of Multiple Vacuoles inside of Acrysof Intraocular Lens

Acrysof intraocular lens (IOL) (Alcon,Dallas,USA), the first commercially available foldable acrylic IOL, which was approved for marketing in the United states on December, 1994 and in the Korea on August, 1997.It is made with an acrylic/methacrylic polymer. Characteristics of the Acrysofistiguished from commonly used foldable silicon IOLs include improved elastic properties (not slippery when wet), slow and controlled unfolding, and a high refractory index resulting in a thinner lens. We experienced vacuolesin Acrysof IOLs which has no visual influence in 4 cases and report this unusual cases with a review of available literature.