Master Theses UMCG - University of Groningen
 
English | Nederlands

het bouwen en valideren van een opstelling om de contrastgevoeligheid bij hoge lichtniveaus te meten : Een pilotstudy

(2016) Berkel, C.M. van

Glaucoma is a chronic progressive eye disease which causes damage to the optic nerve. It could lead to blindness if left untreated. Many glaucoma patients complain of seeing in low, high and changing light conditions. Recent research focused on the low and changing light conditions. In the literature, little is known about the visual functioning in high light conditions. This pilot study will focus on the visual functioning in the high light conditions.
The primary aim of this study is to build and validate an experimental setup in which the contrast sensitivity in high light conditions can be measured.
The experimental setup was built with a rear projection screen and an Acer P1387W projector. 10 ophthalmic healthy subjects were included, aged between 24 and 67 years. The contrast sensitivity was measured in an already existing and a new experimental setup in normal light conditions. In addition, the examination of contrast sensitivity was also performed on the new experimental setup in high light conditions.
The mean contrast sensitivity and the shape of the contrast sensitivity function does not depend on the setup on which it is determined (p = 0,22 and p = 0,29 respectively). The mean contrast sensitivity and the shape of the contrast sensitivity does not different significantly between the light conditions in which it was tested (p = 0,16 and p = 0,26 respectively).
Further research will measure visual function in high light conditions in a larger group of healthy subjects and glaucoma patients. The aim of the follow-up study is to objectify the complaints of glaucoma patients in high light conditions.






 
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