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Cover test

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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The cover-uncover test involves the patient fixating on an object, one eye is then covered and a refixation movement is looked for in the other - uncovered - eye. The other eye is then tested in the same way. If, during either manoeuvre, there is a movement of the unoccluded eye, then that eye must have been squinting before the fellow eye was uncovered, ie a manifest squint is present.

Click here for video of "ophthalmology: tropias versus phorias" includes cover-uncover test

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