Decreased sensitivity of the retina to light caused by excessive exposure to sunlight. ... Origin: G. A-priv. + phos, light, + aisthesis, perception ... (05 Mar 2000) ... 
Type: Term Pronunciation: ă-fot′es-thē′zē-ă Definitions: 1. Decreased sensitivity of the retina to light caused by excessive exposure to sunlight.
aphotesthesia A condition caused by undue exposure to sunlight. It is characterized by reduced retinal sensitivity to light.