aphantasiac

From aphantasia +‎ -ac.

aphantasiac (plural aphantasiacs)

1. A person who has aphantasia.

   Synonym: aphant

   • 2018, 5 live News, "When you can’t picture your own family: Life with aphantasia", BBC:

     So while an aphantasiac could recognise a loved one, or identify them in a photograph, they wouldn’t be able to ‘picture’ them if they’re not there.