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PRE011 TNO test

Pre-refraction procedures • 1m 29s

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    It is useful to test oculomotility (smooth pursuit eye movements) for a whole range of reasons but in particular when a patients presents with diplopia, there are symptoms such as eye pain when looking away from the primary position of gaze and when there is a reading difficulty which is unlikely...

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    The alternating cover test in the primary position allows comparison of the primary and secondary angles of deviation. Repeating the alternating cover test in the extreme positions of gaze will cause the size of the dissociated deviation to increase in the direction of the affected muscle(s).

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