Critical flicker fusion (CFF), a measure of visual processing speed, predicts executive function in younger and older adults and may be helpful in predicting decline in executive function, say ...

Glaucoma patients show slower visual response times, indicating impaired visual signal processing rather than motor or attention deficits. The study involved glaucoma patients and healthy controls, ...

Visual illusions are a quick test of how quickly your brain and eyes coordinate to find a hidden object or a different shape within a complex image. Optical illusions can reveal your attention to ...