Strabismus
Exotropia
Commonest childhood strabismus in South East Asia
Causes a crossed diplopia: right image comes from left eye and vice versa
Hot Topic
In exotropic patients, always exclude:
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Nerve palsies (eg. third nerve)
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Muscle restriction: orbital fracture, thyroid eye disease, orbital inflammation, craniofacial abnormalities
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Sensory exotropias: cataract, glaucoma, retinal disease etc.
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Consecutive exotropia