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[Contrast sensitivity in aphakia and artiphakia].

D Hejcmanová1, J Peregrin, J Svĕrák

  • 1Katedra ocního lékarství LF UK, Hradec Králové.

Ceskoslovenska Oftalmologie
|March 1, 1991
PubMed
Summary
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Contrast sensitivity testing offers insights beyond visual acuity. While age impacts vision, glasses-corrected aphakic eyes maintain normal contrast sensitivity, unlike those with intraocular lenses.

Area of Science:

  • Ophthalmology
  • Vision Science

Context:

  • Visual acuity testing is standard but limited.
  • Contrast sensitivity provides additional functional visual information.
  • Age-related decline in contrast sensitivity is a known factor.

Purpose:

  • To evaluate contrast sensitivity in aphakic eyes corrected by glasses.
  • To assess contrast sensitivity in eyes with intraocular lenses (artephakias).
  • To compare these findings with age-matched controls.

Summary:

  • Contrast sensitivity in aphakic eyes corrected with glasses is comparable to phakic (natural lens) eyes of the same age.
  • Eyes with iris clip intraocular lenses show approximately a 50% reduction in contrast sensitivity.
  • Eyes with posterior chamber intraocular lenses exhibit a reduction of about one-third in contrast sensitivity compared to controls.

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Impact:

  • Contrast sensitivity measurement is a valuable supplement to basic visual function tests.
  • Findings highlight the impact of different intraocular lens types on visual function.
  • This research aids in understanding visual outcomes after cataract surgery and lens implantation.