What limits normal visual performance in the dark?

Summary When patients describe difficulties in seeing in the dark we need to consider whether this refers to rod photoreceptor dysfunction and how this affects our vision. How can we reliably measure scotopic (rod mediated night) vision and what functional consequences would we expect from losses of...

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Bibliographic Details
Published inActa ophthalmologica (Oxford, England) Vol. 94; no. S256
Main Author Fitzke, F.W.
Format Journal Article
LanguageEnglish
Published Malden Wiley Subscription Services, Inc 01.10.2016
Subjects
Cell death
Epithelium
Eye
Fovea
Ophthalmology
Photoreceptors
Retina
Retinal pigment epithelium
Rods
Spatial distribution
Vision
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Summary:Summary When patients describe difficulties in seeing in the dark we need to consider whether this refers to rod photoreceptor dysfunction and how this affects our vision. How can we reliably measure scotopic (rod mediated night) vision and what functional consequences would we expect from losses of scotopic vision? Are visual losses attributable to cell death of rod photoreceptors or to dysfunction of the Retinal Pigment Epithelium (RPE)? Since there are no rods in the central fovea we must consider the spatial distribution of rods, the contribution of the RPE and other factors on difficulties in seeing in the dark.
ISSN:1755-375X
1755-3768
DOI:10.1111/j.1755-3768.2016.0175