Gradual visual loss.
D005128:Eye Diseases / Q000503:physiopathology; D006801:Humans; D007908:Lens, Crystalline / Q000503:physiopathology; D012160:Retina / Q000503:physiopathology; D014786:Vision Disorders / Q000503:physiopathology*; D014795:Visual Pathways / Q000503:physiopathology