title: ABC of Ophthalmology: evaluating common signs and symptoms.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004172:Diplopia / Q000175:diagnosis; D004244:Dizziness / Q000175:diagnosis; D005128:Eye Diseases / Q000175:diagnosis*; D005260:Female; D006261:Headache / Q000175:diagnosis; D006801:Humans; D007223:Infant; D007766:Lacrimal Apparatus Diseases / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D009759:Nystagmus, Pathologic / Q000175:diagnosis; D012030:Refractive Errors / Q000175:diagnosis; D012607:Scotoma / Q000175:diagnosis; D013997:Time Factors; D014792:Visual Acuity