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Monofixation Syndrome

Background

Monofixation syndrome is characterized by the presence of peripheral retinal fusion with a unilateral facultative central suppression scotoma. Individuals with monofixation syndrome have reduced binocularity due to this suppression scotoma. Specifically, monofixators tend to have small angle strabismus measuring 8 prism diopters or fewer without presence of diplopia.
 Patients with monofixation syndrome cannot achieve fine stereopsis (binocular depth perception). Instead, they can only achieve gross stereopsis measuring at best 3000 to 67 seconds of arc, due their inability to have bifoveal fusion.

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