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Affixes

-opsia

A defect of vision.

Greek ‑opsia, seeing, from ōps, ōp‑, eye, face.

Achromatopsia (Greek a‑, without, plus khrōma, khrōmat‑, colour) is total colour blindness, while chromatopsia is abnormally coloured vision, a rare condition of varied cause; hemianopsia (or hemianopia) is blindness over half the field of vision; micropsia (Greek mikros, small) is a condition in which objects appear smaller than normal; metamorphopsia (Greek metamorphoun, transform, change shape) is a defect in which objects appear distorted. See also ‑opia.