micropsia

noun
mi·​crop·​sia | \ mī-ˈkräp-sē-ə How to pronounce micropsia (audio) \
variants: also micropsy \ ˈmī-​ˌkräp-​sē How to pronounce micropsy (audio) \
plural micropsias also micropsies

Medical Definition of micropsia

: a condition of abnormal visual perception in which objects appear to be smaller than they are in reality — compare macropsia