There recently was a reference in one of the caregiver indicating that Alzheimer's sufferers can't see white. Is this true?

Thank you! I noticed sometimes my husband has trouble seeing. I wondered if the problem was that he could see, but just couldn't register what he was seeing. That may be part of the problem, but the white-on-white is certainly something to consider. Thank you so much.

I just did some quick research on the Internet... apparently if a door is white and the wall around the door is white, it makes it harder for someone with Alzheimer's to see the door. Same as white mashed potatoes on a white plate.

Bathrooms done in shades of white, with a white floor, white walls and a white toilet can be particularly difficult. The toilet effectively disappears. I read if one buys a dark color toilet seat, it can make it easier to find. In the shower white grab bars on one tile are harder to find. Put a bright color rubber mat in the bottom of the bathtub.

My Mom doesn't have Alzheimer's/Dementia but she has macular generation... I gave Dad a bright red vest to wear to make it easier for Mom to see where he is.