#visual agnosia

• Achromatognosia — A rare neurological disorder (gnosic) characterized by the patient's inability to recognize, identify, or name colors, even though their peripheral visual system, retina, and optic nerve are structurally intact. This condition is usually caused by lesions located in the occipito-temporal cerebral cortex (associative visual area) and often manifests within visual agnosia.
• Agnosia — A neurological disorder characterized by an inability to recognize or interpret sensory impressions, such as objects, persons, sounds, or shapes, despite intact primary sensory organs and general intellectual functioning; it typically results from structural damage to the associative cerebral cortex.
• Astrezie — An extremely rare medical term, sometimes used in older neurological semiology or as a rare clinical jargon variant to describe a severe form of astreopsia (the structural pathological inability to perceive object movement in three-dimensional space or the lack of stereoscopic vision). This complex visual-perceptual dysfunction is caused by bilateral cortical lesions in the secondary visual area, severely affecting the patient's spatial orientation.