Photographic method for Brückner and Hirschberg testing.
An apparatus for strabismus detection was designed to allow photographing fundus and corneal reflexes for Brückner and Hirschberg testing, respectively. Photographs of adult subjects with simulated strabismic deviations were viewed by two groups of observers, optometry students and optometry faculty. In general there was no significant difference in testing results between the two groups. Subject error produced unreliable Brückner results. However, Hirschberg testing was effective approximately 80% of the time in detecting a deviating eye in strabismus of magnitudes of about 5 delta. Anisometropia in Brückner testing was also investigated. Magnitudes of 2.00 D or greater significantly affected results. Clinical application of the photographic Hirschberg test may have potential value as a screening method. The photographic Brückner test is not recommended for adults; its reliability in children requires investigation.
Southern California College of Optometry, Fullerton.
J R
JR
Griffin
L N
LN
McLin
C M
CM
Schor
D004867:Equipment Design; D005654:Fundus Oculi; D006801:Humans; D008297:Male; D010781:Photography / Q000295:instrumentation*; D013285:Strabismus / Q000175:diagnosis*; D014787:Vision Tests / Q000379:methods*; D015348:Vision, Binocular