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 GOC’s findings indicate strong patient satisfaction with eye care services but identifies that registrants have concerns that commercial pressures could potentially impact their ability to deliver the best possible care to patients, as well as affecting their wellbeing.