| The Comparison of Binocular Function of Basic and Simulated Divergence Excess Type in Intermittent Exotropia. |
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Se Youp Lee, Hak Yong Kim, Young Chun Lee |
1Department of Ophthalmology, Keimyung University, School of Medicine, Daegu, Korea.
2Department of Ophthalmology, Uijongbu, St Mary's Hospital, The Catholic University of Korea, College of Medicine, Uijongbu, Korea. lsy3379@dsmc.or.kr |
| 간헐외사시에서 기본형과 거짓눈벌림과다형의 양안시기능 비교 |
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이세엽1,김학용1,이영춘2 |
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Department of Ophthalmology, Keimyung University, School of Medicine1, Daegu, Korea Department of Ophthalmology, Uijongbu, St Mary’s Hospital, The Catholic University of Korea, College of Medicine2, Uijongbu, Korea |
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Correspondence:
Se-Youp Lee, M.D.1 |
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| Abstract |
PURPOSE
The purpose of this study was to evaluate and compare the binocular function in patients with basic and simulated divergence excess types of intermittent exotropia [X(T)]. METHODS: Seventy-seven patients, 46 basic type and 31 simulated divergence excess type, were studied by Worth 4-dot test (W4D), Polarized 4-dot test (P4D), Titmus test, and distance stereoacuity test using Mentor B-VAT(R)II videoacuity tester. RESULTS: Near W4D, distant W4D and distant P4D were fused in 71.7%, 8.6% and 52.2% in basic type and in 100%, 25.8% and 87.1% in simulated divergence excess type, respectively. The fusion rate in simulated divergence excess type was significantly higher, than in basic type (P=0.001, 0.04, 0.001). However, the difference in near P4D between the two types was not significant (P=0.24). In distance stereoacuity test, basic type showed 272 seconds and simulated divergence excess type showed 177 seconds, showing a significant difference (P=0.02). There was no significant difference in near stereoacuity between the two types (P=0.08). CONCLUSIONS: The study demonstrated a difference in binocular function in patients with basic and simulated divergence excess types of X(T). A better binocular function was observed in the latter group. |
| Key Words:
Basic type;Binocular function;Intermittent exotropia;Simulated divergence excess type |
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