Abstract
We questioned 104 consecutive eye casualty patients about any visual disturbance experienced while wearing an eye patch as part of their treatment. Many (31%) reported momentary loss of vision in the uncovered eye. Some experienced this while driving. It was more common (p<0.0008) if the ‘dominant eye’ had been patched (47%) rather than the ‘non-dominant eye’ (16%). In a separate experiment, a number of co-operative subjects were provided with a translucent-coloured occluder to be worn over each eye in turn. They reported a recurring coloured interference in the uncovered eye sparing the monocular crescent. We propose that the loss of vision in the unpatched eye is due to binocular rivalry suppression by the patched eye. This visual disturbance may be a cause of anxiety or risk for the patient. Patched patients should be warned this may occur, and advised to avoid driving or operating machinery.
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Ellingham, R., Waldock, A. & Harrad, R. Visual disturbance of the uncovered eye in patients wearing an eye patch. Eye 7, 775–778 (1993). https://doi.org/10.1038/eye.1993.182
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DOI: https://doi.org/10.1038/eye.1993.182
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