Effect of anti-reflective, photochromic anti-reflective and CR-39 lenses on disability glare

Document Type : Original article

Authors

1 1. Phd of Optometry. Faculty of Rehabilitation Science. Shahid Beheshti University of Medical Science, Tehran, Iran

2 2. OD of Optometry. Faculty of Rehabilitation Science. Shahid Beheshti University of Medical Science, Tehran, Iran

3 3. MSc of Biostatistics. Faculty of Rehabilitation Science. Shahid Beheshti University of Medical Science, Tehran, Iran

4 4. Student Research Committee. MSc of Optometry. Faculty of Rehabilitation Science. Shahid Beheshti University of Medical Science, Tehran, Iran

Abstract

Background and Aim: Some methods are proposed in the literature to decrease disability glare. In this study the effect of CR-39, antireflective and photochromic antireflective lenses on disability glare was measured in simple myopic, simple astigmatism and compound myopic astigmatic participants. The aim of the study was to find a lens which decreases the disability glare more than others.
Materials and Methods: The quasi experimental repeated measure study was designed to compare the effect of the CR-39, antireflective and photochromic antireflective lenses on disability glare. This study was performed on 34 participants .Disability glare was measured with car head light effect on contrast sensitivity under photopic and mesopic condition.
Results: There was no statistical difference in contrast sensitivity between the lenses except for 18 Cycle/Degree frequencies under mesopic condition in which CR-39 lens show better result than other lenses.
Conclusion: This study showed that CR-39 lenses, anti -reflective and photochromic anti-reflective lenses have identical effect on disability glare in suprathereshold condition, and there is not any reason to prescribe anti-reflective and photochromic lens to decrease disability glare.

Keywords

References

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The Scientific Journal of Rehabilitation Medicine
Volume 3, Issue 4 - Serial Number 4
January and February 2015
Pages 10-16

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History

  • Receive Date: 04 May 2014
  • Revise Date: 04 August 2014
  • Accept Date: 21 November 2014
  • First Publish Date: 22 December 2014

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