Could macular degeneration lead to misdiagnosis of cognitive impairment?

Allowances need to be made for vision impairment when applying certain cognitive screening tests, Australian researchers say
Elderly person

Cognitive tests that rely on vision could lead to misdiagnosis of cognitive impairment for people with age-related macular degeneration, researchers suggest. 

The team, from the University of SA, found people with normal vision were slower to complete cognitive tasks when wearing goggles that simulated age-related macular degeneration (AMD).