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Short-wavelength acuity: blue-yellow and achromatic resolution loss with age

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Zlatkova, Margarita, Coulter, E and Anderson, Roger (2003) Short-wavelength acuity: blue-yellow and achromatic resolution loss with age. VISION RESEARCH, 43 (1). pp. 109-115. [Journal article]

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Abstract

Previous studies have indicated that peripheral resolution for achromatic gratings is sampling limited and directly related to the density of the underlying midget ganglion cell population. Previous studies by the authors have shown that peripheral resolution for blue-cone isolating gratings is also sampling limited, is robust to optical defocus and short-wavelength attenuation, and yields estimates of sampling density which correspond closely with the density of small bistratified ganglion. cells. We measured peripheral resolution in a group of normal subjects ranging in age from 12 to 72 years, using both achromatic and blue-cone isolating gratings, to determine how performance (and hence ganglion cell density) changed with age for both systems. Resolution was higher for achromatic than blue-yellow gratings and performance was flat for both until the fifth decade. After this, performance declined for both at a rate of similar to14%/decade with no significant difference between the two rates of decline. Individual measurements of lens density were not correlated with short-wavelength sensitive resolution performance in the older subjects, further indicating that the decline in resolution was not attributable to pre-retinal absorption. (C) 2002 Elsevier Science Ltd. All rights reserved.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Biomedical Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Vision
ID Code:3950
Deposited By:Dr Margarita Vidinova
Deposited On:12 Sep 2012 14:13
Last Modified:12 Sep 2012 14:13

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