Ulster University Logo

Ulster Institutional Repository

The effect of age-related lens yellowing on Farnsworth-Munsell 100 hue error score

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

Beirne, Raymond, Mcllreavy, Lee and Zlatkova, Margarita (2008) The effect of age-related lens yellowing on Farnsworth-Munsell 100 hue error score. OPHTHALMIC AND PHYSIOLOGICAL OPTICS, 28 (5). pp. 448-456. [Journal article]

Full text not available from this repository.

DOI: 10.1111/j.1475-1313.2008.00593.x

Abstract

Purpose: To investigate the effects of real and simulated age-related changes in crystalline lens yellowing on Farnsworth-Munsell (FM) 100 hue performance. Methods: FM 100 hue total and partial error scores (PES) were measured in a group of younger (n = 10, mean age = 22.2 +/- 2.65 years) and a group of older (n = 10, mean age = 54.5 +/- 2.64 years) normal observers along with psychophysical estimates of crystalline lens optical density and pupil size. Three younger observers underwent repeated FM 100 hue testing under a variety of simulated age-related lens yellowing conditions, using filters with well-defined transmittance properties which attempted to mimic the real age-related lens yellowing changes of the older group. Results: FM 100 hue total and PES were significantly higher in the older age group compared with the younger group (p < 0.01). Lens density measures were significantly higher in the older age group compared with the young group (p < 0.01), but showed less scatter than individual FM 100 hue error scores. Simulated lens yellowing in the three younger observers, equivalent to the level of that of the older observers, did not affect any of their FM 100 hue total or PES. Conclusions: Simulation of age-related lens yellowing in younger observers has little effect on FM 100 hue error score. A variety of other factors such as pupil size, background illuminaton level, iris colour and macular pigment density may contribute to the age-related increase in FM 100 hue scores.

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:3926
Deposited By:Dr Margarita Vidinova
Deposited On:09 Feb 2010 12:02
Last Modified:04 Aug 2011 09:41

Repository Staff Only: item control page