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KMID : 0371619980140010075
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Journal of Wonkwang Medical Science
1998 Volume.14 No. 1 p.75 ~ p.79
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Clinical Study on Sensory Heterotropia
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Kim Sang-Duck
Yang Yun-Sik
Kim Jae-Duck
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Abstract
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Background : Sensory heterotropia is defined as a secondary deviation following loss or severe reduction in visual function in one eye. Surgical results in sensory heterotropia are quite unpredictable. Overcorrections or undercorrections occur frequently, and surgical alignment is rarely stable.
Methods : The authors designed a study based on medical records of 28 patients with sensory heterotropia. The study included the etiology of visual impairment, type of strabismus as the age of the onset of visual loss and surgical outcome.
Results : The range of age was from 5 to 50 years old(mean age, 20.6 years) and onset of visual impairment was from at birth to 25 years old(mean age, 7.6 years). The etiologies were anisometropia (8 cases), corneal opacity (7 cases), optic nerve disease (6 cases), retinal disease (5 cases) and congenital cataract (2 cases). The direction of deviation in patients under 5 years of age were esotropia in 7 cases and exotropia in 4 cases. In patients over 5 years of age esotropia accounted for 1 case and exotropia for 16 cases. Immediately after surgery 20 cases were successful, 3 cases undercorrected and 5 cases overcorrected. On follow-up, 4 cases out of 20 presented recurrence, one case of consecutive exotropia in a esotropic patient and straight alignment in one overcorrected patient. Also recurrence was low in the eyes with limitation of motion after operation suggesting that limitation of motion may be a inhibiting factor of recurrence in patients with sensory heterotropia.
Conclusion : Although our average follow-up is only 23 months, We feel that surgical results in patients with sensory heterotropia appear to be stable enough to allow the patients of good cosmesis.
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KEYWORD
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anisometropia, esotropia, exotropia, sensory heterotropia
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