In acquired paralytic strabismus, the occurrence of sensory phenomena, such as diplopia and altered subjective orientation, is well documented. These abnormal sensory phenomena are so distressing to the patient that ophthalmologists have become familiar with their origin and nature. In contrast, visual perception in the common types of comitant strabismus is so altered by suppression that few symptoms result. Most ophthalmologists, therefore, have concentrated attention on the more obvious manifestations, such as the misalignment of the visual axes. The altered visual percept has not been entirely neglected; however, the literature indicates that the primary interest of clinicians has been how abnormal sensory phenomena affect the prognosis of strabismus, that is, suppression and anomalous correspondence have been considered primarily as "obstacles" to the restoration of normal binocular vision. If we are to develop effective treatment for these sensory abnormalities, a better understanding of their origin and nature is essential. This also
SWAN KC. False Projection in Comitant Strabismus: Alleviation by Anomalous Retinal Correspondency. Arch Ophthalmol. 1965;73(2):189–197. doi:10.1001/archopht.1965.00970030191008
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