Strabismus

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Strabismus is also known as a Squint and describes the eyes not aligning together to look at an object.

  • Strabismus may be convergeant or divergeant


A squint from childhood can result in Amblyopia


The Hirschberg Test:

When the patient looks towards a light source (even a window), note the relative position of the reflection on the pupil. If the eyes are properly aligned, the reflection will be in the same spot on each eye. If not, strabismus is present.

(The patient needs to be looking at an object which is not close enough to cause appropriate convergeant gaze!)


The cover test:

The patient fixates an object. One eye is then covered.
  • If the uncovered eye does not move, then you have covered the eye which is not fixating.
  • If the uncovered eye does move then you have covered the eye which is fixating the object.
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