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Effects of yellow filters on visual acuity, contrast sensitivity and reading under conditions of forward light scatter

  • Frank Eperjesi
  • Lillian Evangelica Agelis
Miscellaneous

Abstract

Background

Yellow filters are sometimes recommended to people with low vision. Our aim was investigate the effects of three commercial yellow filters on visual acuity and contrast sensitivity (with and without glare) and reading (without glare) under conditions of forward light scatter (FLS).

Method

Fifty-five healthy subjects were assessed with Corning Photochromic Filters (CPFs) 450, 511 and 527 and a filter producing FLS. The effects on log MAR visual acuity, Pelli–Robson contrast sensitivity with and without glare, and reading (measured with MNRead charts) without glare were determined.

Results

Statistically significant differences were found between the overall effect of glare and between CPFs for visual acuity and contrast sensitivity. A gradual decline in visual acuity, contrast sensitivity and reading with increasing CPF absorption was noted.

Conclusion

Effects of CPF450, 511, 527 on visual acuity, contrast sensitivity and reading under conditions of FLS were negative but not clinically significant.

Keywords

Contrast sensitivity Forward light scatter Glare Reading Visual acuity Yellow filters 

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Ophthalmic Research Group, School of Life and Health SciencesAston UniversityBirminghamUK

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