vision of person suffering with - tunnel view. diagnosis in opthalmology

aging blind blindness blurred care characterized conjunctivitis cornea degeneration diagnosis disability disease disorders eye eyesight field focus genetic genetically glasses group health heterogeneous human impairment inheritance inherited lens look loss medical medicine night ocular ophthalmology opthalmology optic optical orb orientation people peripheral person pigmentosa problem progressive pupil retina retinal retinitis retinopathy senior sight suffering syndrome trouble tunnel usher view vision visual