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Stabismus
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present when the foveas of both eyes are not simultaneously
aligned on the objeect of regard
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Esodeviation
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visual axes converge see
example
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Exodeviation
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visual axes diverge see example
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hyper/hypodeviation
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visual axes differ in a vertical direction
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hypodeviation
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eye described is lower than its fellow
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hyperdeviation
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eye described is higher that its fellow
see example
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Concomitant strabismus
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angle of deviation remains constant whatever the position of
gaze
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Incomitant strabismus
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angle of deviation varies with the gaze direction
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Manifest strabismus
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a "tropia" eg esotropia - squint is present with both eyes open
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Latent strabismus
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a "phoria" eg esophoria - squint is only demonstrable when eyes
are disassociated
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