Visual thresholds following posterior chamber lens implants.
The dark-adapted threshold for a 2 degree white test imaged 10 degrees parafoveal and the foveal threshold luminance for Landolt ring gap discrimination were measured on 23 pseudophakic eyes with 6/9 or better visual acuity, 6 months to 3 years following posterior chamber lens implantation, and on 15 phakic eyes from an appropriately matched control group. Both scotopic and photopic thresholds were higher for the pseudophakic than for the control group by 0.3 and 0.6 log, respectively. These parafoveal and foveal thresholds, when measured under the influence of glare, were likewise significantly higher for the pseudophakic group.
Maurice and Gabriela Goldschleger Eye Institute, Medical Faculty of Tel-Aviv University, Chaim Sheba Medical Center, Tel-Hashomer, Israel.
F A
FA
Abraham
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S
Levartovsky
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M
Blumenthal
D000368:Aged; D003623:Dark Adaptation; D005260:Female; D005584:Fovea Centralis / Q000503:physiopathology; D006801:Humans; D007910:Lenses, Intraocular; D008027:Light; D008297:Male; D008875:Middle Aged; D012542:Scattering, Radiation; D012684:Sensory Thresholds; D014785:Vision, Ocular