| Concomitant Hypertropia with Intermittent Exotropia. |
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Hyun Taik Lim, Yong Han Jin |
1Department of Ophthalmology, College of Medicine, Soonchunhyang University, Seoul, Korea.
2Jin Yonghan Eye Clinic. |
| 간헐 외사시와 동반된 수직사시 |
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임현택(Hyun Taik Lim),진용한(Yong Han Jin) |
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| Abstract |
PURPOSE
To investigate the incidence and characteristics of vertical deviation in the intermittent exotropia. METHODS: Fifty consecutive intermittent exotropes over age of 5 were prospectively studied. Patients with any significant ocular and neurologic abnormalities or orbital anatomic abnormalities, definite oblique dysfunction with A or V pattern were excluded. Ophthalmologic evaluation included visual acuity, ocular movements, measurements of angle of deviation by prism cover test, Bielschowsky head tilt test, stereoacuity test, and fundus observation for torsion by indirect ophthalmoscopy. RESULTS: We found that 27 children(54%) had concomitant hypertropia in primary position. Mean amount of hypertropia was 4.81 PD(range: 2~20 PD). Thirty nine children(78%) showed positive Bielschowsky head tilt test. No objective torsion was observed. No inferior oblique overaction was found except for only 2 patients. All subjects had good visual acuity and stereopsis. CONCLUSIONS: The incidence of vertical deviation in the intermittent exotropia is much higher than expected. All of the vertical deviations show positive Bielschowsky head tilt test. |
| Key Words:
Concomitant hypertropia;Intermittent exotropia;Bielschowsky head tilt test |
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