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Related Experiment Videos

Protecting the retina during MemoryLens insertion.

R Kumar1, D L Reeves, D Brodstein

  • 1University of Utah Health Sciences Center, Salt Lake City, Utah, USA.

Journal of Cataract and Refractive Surgery
|January 3, 2001
PubMed
Summary
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The MemoryLens (R) intraocular lens (IOL) scatters light when folded, offering potential protection from operating microscopes. Its resolution is maintained after hydration and reheating, even after dehydration.

Area of Science:

  • Ophthalmology
  • Biomedical Engineering

Background:

  • The MemoryLens (R) is an intraocular lens (IOL) whose light-scattering properties require investigation.
  • Understanding the light-scattering power of folded IOLs is crucial for surgical safety.

Purpose of the Study:

  • To determine the light-scattering power of the folded MemoryLens (R).
  • To assess the impact of hydration, temperature, and dehydration on IOL resolution.

Main Methods:

  • Ten unfolded MemoryLenses were measured for focusing power using an optical bench.
  • Lenses were unfolded in a 37°C water bath, and resolution was tested after drying and rehydration/reheating.

Main Results:

  • Folded lenses diffused light sources.

Related Experiment Videos

  • Unfolded lenses at 37°C showed acceptable to high resolution.
  • Resolution decreased after drying but returned to original levels after rehydration and reheating.

    • Conclusions:

    • The MemoryLens may protect against operating microscope light when folded, at low temperatures, or when dehydrated.
    • The IOL's resolution is robust to changes in hydration and temperature, maintaining performance after unfolding.