Comparative studies on three multifocal contact lenses and the role of pupil size in lens design

A study was conduced to assess the visual performance of three hydrogen multifocal contact lens designs (Esstech PS-PSD, Sunsoft A&B, Unilens) and to analyze the power distribution in the optical design of each lens. Seventeen patients participated in the study. Each completed a post-study quest...

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Bibliographic Details
Published inOptometry and vision science Vol. 77; no. 12 SUPPL.; p. 158
Main Authors Ivonnet, Pedro, Gilman, Bobby, Saitowitz, Hadley, Schatz, Scott
Format Journal Article
LanguageEnglish
Published 01.12.2000
Subjects
Hydrogels
Ophthalmology
Optical design
Patient treatment
Vision
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Summary:A study was conduced to assess the visual performance of three hydrogen multifocal contact lens designs (Esstech PS-PSD, Sunsoft A&B, Unilens) and to analyze the power distribution in the optical design of each lens. Seventeen patients participated in the study. Each completed a post-study questionnaire. Results suggest that in order to achieve maximum visual efficiency for their patients, clinicians need to consider pupil size in dim and bright illumination when choosing the appropriate hydrogel multifocal design.
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ISSN:1040-5488