[micropsia: A defect of vision in which objects appear smaller than normal.] ETYMOLOGY: From Greek micro- (small) + -opia (vision). NOTES: Micropsia is often associated with migraines. It's also known as micropia. The opposite, where objects appear larger than their actual size, is called macropsia (also known as macropia, megalopsia, and megalopia). These distortions in perception are also called Alice in Wonderland syndrome after the little girl in Lewis Carroll's books who enters a hallucinogenic world. Also see diplopia. [micropsia PRONUNCIATION: (my-KROP-see-uh) noun]