SOFT LENS MOVEMENT

Noel Brennan

Abstract

The timecourse and mechanism of variation in on-eye hydrogel lens movement has not been carefully scrutinized, despite the importance of this parameter in assessing lens fit. Three studies were conducted to define the timecourse of soft lens in-eye movement, and to investigate lens dehydration and hypo-osmotic tearing as mechanisms of the initial reduction in lens movement. Lens movement was determined from video slitlamp recordings. In the first experiment, primary gaze lens movement was assessed every 5 min for 30 min, and after 8 h, in 26 subjects wearing either 38% or 67% water content lenses. Lens movement decreased dramatically in the first 5 min, reaching a minimum after 25 min. After 8 h, lens mobility had increased significantly (ANOVA, p CONSEQUENCES OF ANTIOXIDENT DEFICITS IN THE AGING HUMAN MACULA

Details

Year: 1992

Program Number: 2:00 pm

Author Affiliation: n/a

Co-Authors: Kaye McCraw, Linda Young, Richard Lindsay, Ros Smith, BSc(hons), Tim Golding

Co-Author Affiliation: n/a

Room: Great Hall North