Optic aphasia is a neurological condition in which a person is unable to recognize objects visually. It is also known as visual agnosia and is caused by damage to the part of the brain responsible for processing visual information. Other synonyms for optic aphasia include object agnosia, visual agnosia, and visual object agnosia. All of these terms describe a similar condition in which a person cannot identify or recognize objects, even though they may be able to see them clearly. Other related conditions include prosopagnosia, which is difficulty recognizing faces, and color agnosia, which is difficulty identifying colors. These conditions can be caused by a variety of factors, including stroke, traumatic brain injury, and certain neurological disorders.