Cognitive tests that rely on vision-dependent tasks may skew results for up to 25% of adults over 50 with undiagnosed visual problems such as AMD and cataracts. This may lead to a misdiagnosis of mild cognitive impairment in older adults.
Smoking marijuana affects several key visual functions, including 3D vision and contrast sensitivity. However, 90% of cannabis users believe the drug has either no, or minimal, effect on their visual abilities.
Meta-analysis reveals those who have visual impairments or are blind have a higher risk of mortality compared to peers with better vision. The study found mortality risk was 29% higher in those with mild visual impairment and rose to 89% higher for those with severe visual impairments.
Researchers report children with poor vision experience an improvement in their peripheral vision within hours of being exposed to child friendly action video games.
A new study reveals a possible cause of visual impairment in astronauts.
Researchers report human echolocation works in tandem with other senses to help deliver vital information for those with visual impairments.