title: Apparent foveal displacement in normal subjects and in cyclotropia.
abstract: The average location of the fovea in relation to the optic nerve head was determined on fixation photographs from both eyes of 50 non-strabismic subjects. It was found to be 0.3 disc diameters below a horizontal line extended through the geometric center of the optic disc. The range of interocular and inter-individual variations from this position has been described. With the availability of this information, ophthalmoscopy and fundus photography have become useful ancillary tools in the diagnosis of cyclodeviations.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D004172:Diplopia / Q000175:diagnosis; D005260:Female; D005403:Fixation, Ocular; D005584:Fovea Centralis; D005654:Fundus Oculi; D006801:Humans; D008266:Macula Lutea; D008297:Male; D008875:Middle Aged; D009900:Optic Nerve; D010781:Photography; D011446:Prospective Studies; D013285:Strabismus / Q000175:diagnosis*