Field loss due to lesions at the anterior angle of the chiasm.
D000328:Adult; D005128:Eye Diseases / Q000150:complications / Q000175:diagnosis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009897:Optic Chiasm; D009900:Optic Nerve; D014786:Vision Disorders / Q000175:diagnosis / Q000209:etiology*; D014792:Visual Acuity; D014794:Visual Fields