Physiologic Diplopia in Binocular Vision (Normal and Anomalous)

Abstract

The study of physiologic diplopia and Panum's area was done on an apparatus using only the central straight ahead area instead of the entire visual space. In normal subjects, Panum's area measured 2.8 cms with the striated glasses, and without, 3.6 cms. In these cases the diplopia was considered as physiologic diplopia.

The test was also applied to pathologic cases with altered sensory and motor responses. The results showed a type of “physiopathologic diplopia” with wide areas of single binocular perception. Other sensory tests were included in the study in order to compare the results with the physiopathologic diplopia test (PPD) on various types of strabismus patients.

There were several points of interest obtained in the study on strabismus patients with the PPD test, two of which were: The test appeared to be more accurate in determining normal from pathologic cases than most of the other sensory tests in patients with small esodeviations; it was helpful in discriminating a microstrabismus from patients having normal binocular vision.

• physiologic diplopia
• physiopathologic diplopia
• single binocular perception
• microstrabismus