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Received: 2007-12-12

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Journal of Zhejiang University SCIENCE B 2008 Vol.9 No.6 P.470-473

http://doi.org/10.1631/jzus.B0720007


Clinical investigation of surgery for intermittent exotropia


Author(s):  Chong-qing YANG, Ye SHEN, Yang-shun GU, Wei HAN

Affiliation(s):  Department of Ophthalmology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China

Corresponding email(s):   yangchongqing18@sina.com, hanweidr@hotmail.com

Key Words:  Intermittent exotropia (X(T)), Surgery, Binocular vision


Chong-qing YANG, Ye SHEN, Yang-shun GU, Wei HAN. Clinical investigation of surgery for intermittent exotropia[J]. Journal of Zhejiang University Science B, 2008, 9(6): 470-473.

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author="Chong-qing YANG, Ye SHEN, Yang-shun GU, Wei HAN",
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pages="470-473",
year="2008",
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doi="10.1631/jzus.B0720007"
}

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%A Wei HAN
%J Journal of Zhejiang University SCIENCE B
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B0720007

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T1 - Clinical investigation of surgery for intermittent exotropia
A1 - Chong-qing YANG
A1 - Ye SHEN
A1 - Yang-shun GU
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J0 - Journal of Zhejiang University Science B
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.B0720007


Abstract: 
Objective: To investigate the time and postoperative binocular vision of strabismus surgery for children with intermittent exotropia (X(T)). Methods: A retrospective investigation was conducted in 80 child patients with intermittent exotropia. Pre- and postoperative angles of deviation fixating at near (33 cm) and distant targets (6 m) were measured with the prolonged alternate cover testing. The binocular function was assessed with synoptophore. Twenty-one patients took the postoperative synoptophore exercise. Results: (1) A week after surgery, 96.2% of the 80 patients had binocular normotopia, while a year after surgery, 91.3% of the 80 patients had binocular normotopia; (2) Preoperatively, 58 patients had near stereoacuity, while postoperatively, 72 patients achieved near stereoacuity (P<0.05); (3) Preoperatively, 64 patients had Grade I for the synoptophore evaluation and postoperatively, 76 patients achieved Grade I. Meanwhile, 55 patients had Grade II preoperatively and 72 achieved Grade II postoperatively. For Grade III, there were 49 patients preoperatively and 64 patients postoperatively (P<0.05); (4) Patients of 5~8 years old had a significantly better recovery rate of binocular vision than those of 9~18 years old (P<0.05); (5) Patients taking postoperative synoptophore exercise had a better binocular vision than those taking no exercise (P<0.05). Conclusions: (1) Strabismus surgery can help to preserve or restore the binocular vision for intermittent exotropia; (2) Receiving the surgery at young ages may develop better postoperative binocular vision; (3) The postoperative synoptophore exercise can help to restore the binocular vision.

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Reference

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