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Routine eye examinationm part 3 (C8290)

Clinical Practice
In the third part of our series on the eye examination, Andrew Franklin and Bill Harvey look at the assessment and interpretation of binocular status. Module C8290, one general CET point, suitable for optometrists and DOs

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It would be useful to define what it is we are trying to determine:

Tests of motor function can be divided into 'binocular' tests which maintain fusion (for example, fixation disparity) and those which dissociate the eyes (such as cover test and the Maddox rod). As a general principle, binocular tests should always precede dissociation tests. In practice, this is often reversed and frequently patients are tested for fixation disparity having been thoroughly dissociated before, and in some cases, during the test. The odd false positive might be expected in these cases.

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