Effects of ageing on postreceptoral short-wavelength gain control: Transient 
tritanopia increases with age

Werner, A; Bayer, A; Schwarz, G; Zrenner, E; Paulus, W

doi:10.1016/j.visres.2010.05.004

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Effects of ageing on postreceptoral short-wavelength gain control: Transient tritanopia increases with age

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https://www.sciencedirect.com/science/article/pii/S0042698910002245
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Werner, A., Bayer, A., Schwarz, G., Zrenner, E., & Paulus, W. (2010). Effects of ageing on postreceptoral short-wavelength gain control: Transient tritanopia increases with age. Vision Research, 50(17), 1641-1648. doi:10.1016/j.visres.2010.05.004.

Cite as: https://hdl.handle.net/21.11116/0000-0005-9C33-2

Abstract

We investigated the effect of ageing on the neural gain control in the short-wavelength opponent channel. In order to tackle specifically postreceptoral changes, we determined the effect of ageing on transient tritanopia, a paradoxical and transient reduction of short-wavelength sensitivity after the presentation of a long-wavelength adapting light. The results demonstrate an unexpected and significant increase of transient tritanopia with age, which cannot be explained by a general decline of short-wave sensitivity or the selective reduction of retinal illumination. Instead, our data imply that ageing affects also short-wavelength gain control at the site of chromatic opponency or beyond. Age-related changes of adaptation processes should therefore be considered an important factor influencing the visual performances of the elderly.