title: Diagnostic and therapeutic challenges.
authors.forename: H R
authors.initials: HR
authors.lastname: McDonald
mesh_terms: D003937:Diagnosis, Differential; D004596:Electroretinography; D005451:Fluorescein Angiography; D005654:Fundus Oculi; D006801:Humans; D008266:Macula Lutea / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D010857:Pigment Epithelium of Eye / Q000473:pathology*; D012162:Retinal Degeneration / Q000175:diagnosis*; D014792:Visual Acuity