The effects of coloured light filter overlays on reading rates in age-related macular degeneration

Eperjesi, Frank; Fowler, Colin W. and Evans, Bruce J.W. (2004). The effects of coloured light filter overlays on reading rates in age-related macular degeneration. Acta Ophthalmologica Scandinavica, 82 (6), pp. 695-700.

Abstract

Purpose: To determine the effect of coloured light filter overlays on reading rates for people with age-related macular degeneration (AMD). Method: Using a prospective clinical trial design, we examined the null hypothesis that coloured light filter overlays do not improve reading rates in AMD when compared to a clear filter. Reading rates for 12 subjects with non-exudative AMD, associated with a relative scotoma and central fixation (mean age 81 years, SD 5.07 years) were determined using the Rate of Reading Test® (printed, nonsense, lower case sans serif, stationary text) with 10 different, coloured light filter overlays (Intuitive Overlays®; figures in brackets are percentage transmission values); rose (78%), pink (78%), purple (67%), aqua (81%), blue (74%), lime-green (86%), mint-green (85%), yellow (93%), orange (83%) and grey (71%). A clear overlay (Roscolene # 00) (360 cdm-2) with 100% transmittance was used as a control. Results: ANOVA indicated that there was no statistically significant difference in reading rates with the coloured light filter overlays compared to the clear filter. Furthermore, chi-squared analysis indicated that the rose, purple and blue filters had a significantly poorer overall ranking in terms of reading rates compared to the other coloured and clear light filters. Conclusion: Coloured light filter overlays are unlikely to provide a clinically significant improvement in reading rates for people with non-exudative AMD associated with a relative scotoma and central fixation. Copyright © Acta Ophthalmol Scand 2004.

Publication DOI: https://doi.org/10.1111/j.1600-0420.2004.00371.x
Divisions: Life & Health Sciences > Ophthalmic Research Group
Life & Health Sciences > Applied Health Research Group
Life & Health Sciences > Health Sciences
Life & Health Sciences > Optometry
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Uncontrolled Keywords: age-ralted macular degeneration,coloured light filter overlays,light filters,reading rate,Ophthalmology
Published Date: 2004-12

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