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Abstract
Purpose: In this article, retinal-image quality and contrast sensitivity were measured in 25 patients with age-related macular degeneration (ARMD) and 15 patients with normal retinal health.
Materials and Method: Retinal-image quality was evaluated with an objective device based on the double-pass technique, and for visual performance we measured the contrast-sensitivity function.
Results: The results from double-pass device revealed the Strehl ratio to be significantly (p < 0.0001) lower for the ARMD group with a 54.3% reduction for 3 mm pupil size and a 46.9% reduction for 4 mm. Contrast-sensitivity function for ARMD subjects was also significantly lower than for the control group (p < 0.05) with a 38.6% reduction.
Conclusions: Patients affected with ARMD showed poorer retinal-image quality and visual performance than normal subjects. The use of objective devices based on the double-pass technique could be useful for the accurate description of the retinal-image quality of ARMD eyes, in which retinal scattering is significantly increased.
ACKNOWLEDGMENTS
The authors wish to thank David Nesbitt for translating the text into English. This research was supported by the ONCE Foundation (Spain), Ministerio de Educación y Ciencia (Spain) grant FIS 2006-01369 and Junta de Andalucía (Spain) grant P06-FQM-01359.
Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.