Recovering right III nerve palsy. Minimal RE ptosis. Patient is looking up and to the right. Cover-uncover of RE, no movement of the LE. Cover-uncover of the LE, upward movement of the RE; right superior rectus underaction. Movement of RE becomes greater, more easily observed with alternating cover test. This reveals overaction of the contralateral synergist in the LE; in this case the left inferior oblique. When the LE is covered with the patient looking up and to the left there is no observed movement of the RE. When the RE is covered the LE moves down slightly. During the alternating cover test the RE moves upwards to take up fixation indicating a right inferior oblique underaction. The LE can be seen to move down to take up fixation indicating overaction of the contralateral synergist, left superior rectus.
This patient has a fully accommodative left to alternating esotropia. Without the hyperopic prescription in place, the LE moves outwards to take up fixation on cover-uncover indicating a 20Δ left esotropia. When the cover is removed from the LE the RE has moved inwards and there is now a right es...
This patient has a residual intermittent right distance exotropia (simulated), following right lateral rectus recession and medial rectus resection. When the LE is covered the RE is seen to move inwards indicating a right exotropia of approximately 12Δ. This can also be seen when the cover is mov...
Right esotropia in the primary position. Right corneal reflex is displaced to just beyond the pupil margin indicating a right esotropia of around 35∆. The vertical displacement of both reflexes is a filming artefact and should be ignored. A cover-test of RE reveals no movement of LE. Cover test o...
