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Visual performance with simultaneous vision multifocal contact lenses.

Almudena Llorente-Guillemot1, Santiago García-Lazaro, Teresa Ferrer-Blasco

  • 1Optometry Research Group, Department of Optics, University of Valencia, Dr. Moliner 50, Burjassot, Valencia, Spain.

Clinical & Experimental Optometry
|November 11, 2011
PubMed
Summary

PureVision multifocal contact lenses offer good visual acuity and performance for presbyopic patients. Spectacle correction showed better contrast sensitivity in all conditions tested.

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Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Presbyopia affects near vision, necessitating visual aids.
  • Multifocal contact lenses are an option for presbyopic correction.
  • Assessing visual performance under various conditions is crucial for contact lens evaluation.

Purpose of the Study:

  • To evaluate visual performance with PureVision high addition multifocal contact lenses (PM).
  • To compare contrast sensitivity under photopic and mesopic lighting with and without glare.
  • To assess distance and near visual acuity (VA) in presbyopic patients.

Main Methods:

  • A cross-over study involving 20 presbyopic patients.
  • Comparison between PureVision multifocal contact lenses (PM) and spectacles.
  • Measurement of contrast sensitivity and visual acuity under varied light conditions (photopic, mesopic, glare).

Main Results:

  • Spectacle correction demonstrated superior contrast sensitivity compared to PM lenses in all tested conditions.
  • Both spectacle and PM lenses provided good distance and near visual acuity.
  • Visual performance with PM lenses was assessed under photopic and mesopic lighting.

Conclusions:

  • PureVision multifocal contact lenses maintain good visual acuity.
  • The lenses provide acceptable visual performance in real-world scenarios.
  • Spectacle correction was found to be better for contrast sensitivity.