FUNCTIONAL BLINDNESS By N., Sam M.S. - 23 a deterioration in vision with no apparent cause. Acuity is lost and can include painful symptoms like burning and tired eyes, double vision, convergence and concentric field constriction. FUNCTIONAL BLINDNESS: "Complete functional blindness is a rare condition." Related Psychology Terms COLOR BLINDNESS CANNON, WALTER BRADFORD (1871-1945) VISIBILITY CURVE VISUAL DEFECTS ARTERIOSCLEROTIC BRAIN DISORDER CHILD PSYCHIATRY ASTHENIC REACTION (Neurasthenia) Counselor's Role in Emergency Teams HALLUCINOGEN Diagnosis and Treatment Planning Cite this page: N., Sam M.S., "FUNCTIONAL BLINDNESS," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/functional-blindness/ (accessed December 2, 2021).