Cerebral Blindness

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Abstract
Cerebral blindness, often called "cortical" blindness, may be defined as bilateral absence of light perception (under the usual conditions of testing) caused by disease of the cerebral hemispheres. The lesions involve the retrogeniculate portions of the visual system on both sides, either the optic radiations or the calcarine cortex or both. For the purpose of this study, fulfillment of the following clinical criteria was required: 1. The patient was totally blind. 2. The eyes themselves (that is, media, retina, and optic nerve) were normal or showed only minor abnormality, incapable of causing blindness. 3. The pupillary light reactions were normal. 4. There was other evidence of bilateral cerebral disorder, either at the time the blindness developed or in the past. The limitations of these criteria will be discussed later. This entity is well known, and many cases have been reported since the classical paper of Förster in 1890.11These

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