Journal of the Korean Ophthalmological Society 1999;40(12):3536-3539.
Published online December 1, 1999.
Cyclic Exotropia: One Case of Clinical Report.
Kye Sook Han, Key Hwan Lim
주기 외사시 : 1 례의 임상 경험 보고
한계숙(Kye Sook Han),임기환(Key Hwan Lim)
Cyclic strabismus is now well recognized, but remains a rare entity. This heterotropia represents an interesting ocular motility problem in which the ocular deviation is present on a rhythmic basis, usually a 48 hour cycle. On the strabismic day, constant heterotropia is large and associated with suppression and no diplopia. On the nonstrabismic day, no deviation or only a small heterophoria is present with good binocular function. Most of these strabismus were presented with esotropia, but in our case, the pattern of deviation is cyclic exotropia. This is a very rare and unique feature.
Key Words: Cyclic exotropia;Cyclic strabismus

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