Effects of Soft Contact Lenses on Contrast Sensitivity
作者:
CPT L. KIRKPATRICK,
JOHN ROGGENKAMP,
期刊:
American Journal of Optometry and Physiological Optics
(OVID Available online 1985)
卷期:
Volume 62,
issue 6
页码: 407-412
ISSN:0093-7002
年代: 1985
出版商: OVID
关键词: contrast sensitivity;spatial frequency;contrast sensitivity function;soft contact lenses
数据来源: OVID
摘要:
This study attempts to resolve the conflicting reports relative to contrast sensitivity function (CSF) and soft contact lens wear. Contrast sensitivity was measured at six spatial frequencies for 19 subjects (38 eyes) when corrected with either spectacles or soft lenses. Measured amounts of residual astigmatism and/or sphere were corrected using a trial frame and lenses. Additionally, data were evaluated on more than one occasion in order to investigate the effect of time upon visual performance with the lenses. The results indicate a measurable decrease in contrast sensitivity for only the highest of the spatial frequencies tested (22.8 c/deg) when soft lenses were worn. For those eyes demonstrating a clinically significant decrease in contrast sensitivity, responsibility appears to be shared by both the contact lens and the cornea. There were no significant changes in CSF over time.
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