Our ability to pick out objects from their backgrounds based on differences in luminance has traditionally been thought to remain constant across different light intensities.
This assumption has been based largely on previous studies using relatively dim stimuli (Geisler et al, 2007). But researchers at the State University of New York set out to investigate how contrast sensitivity is affected in a greater range of light intensities.
In tests on cats and humans, the group measured the responses of neurons to different combinations of contrast and light intensities.
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The College has offered its congratulations to Sir Keir Starmer and the Labour Party on their success in the General Election and on forming the next UK government.
The College of Optometrists is calling on the next Westminster government to establish optometrists as the first port of call for anyone with an eye care issue.