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July 1983

Hemiretinal Trigger Mechanism

Author Affiliations

Modena, Italy

Arch Ophthalmol. 1983;101(7):1145. doi:10.1001/archopht.1983.01040020147027

To the Editor.  —I read with great interest the article by Pratt-Johnson et al in the February Archives (1983;101:218-224) entitled "Suppression in Strabismus and the Hemiretinal Trigger Mechanism."The authors state that eight patients with monofixation syndrome and two patients with esotropia with abnormal retinal correspondence were tested. It was not stated in the article how retinal correspondence behaves in the monofixation syndrome under a causal seeing condition. In our experience this type of patient shows anomalous retinal correspondence (ARC) with the striated glasses and normal correspondence with suppression rarely. Moreover, we showed1-3 that in these patients there is an anomalous overlapping of the visual fields of the two eyes, sustained by ARC and with little or no suppression, if fusable stimuli are used as test targets. The authors state that, in monofixators, normal retinal correspondence may be found in the periphery of the visual field. The binocular single