Date of Award
Master of Science in Vision Science
A general review of fixation disparity and Panum's fusional areas preceeded a more specific discussion of vertical fixation disparity. Included were a summary of factors affecting fixation disparity, symptomatology and methods of prescribing for vertical imbalance. The Butler test was compared with the AO Nearpoint Vectographic Card #1 regarding their ability to detect induced vertical misalignment. Results of the parametric statistics, using a t-test, indicated that there was no significant difference between the two methods in detecting vertical misalignment.
Beaman, Don and Breitbach, Roseann, "Validation of the Butler test for detection of vertical fixation disparity" (1981). College of Optometry. 581.