压贴三棱镜治疗儿童间歇性外斜视术后过矫的临床疗效

doi:10.3760/cma.j.cn115909-20200709-00292

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Abstract Objective: To study the treatment of secondary esotropia caused by overcorrection of intermittent exotropia in children aged 4-8 years using a press-on prism, and its effect of press-on prism. Methods: In this retrospective study, 38 patients with overcorrection (+5△<strabismus≤25△) 2 months after surgery, aged 4 to 8 years with intermittent exotropia who were treated in the Eye Center of the Second People's Hospital of Ji'nan from July to December 2017 were included. In 38 cases, 1/3 to 1/2 of the residual esotropia was corrected by using a press-on prism. Patients were reviewed every 2 months and the degree of the press-on prism was adjusted according to the eye position. The press-on prism was removed when squint was ≤+5△ and stable after 3 months. Patients were followed up for one year after press-on prism treatment, to observe orthotropism rate (percentage), and far and near stereoscopic vision (median). At each time point, analysis of variance and χ2 tests were used to compare the data. Results: The orthotopic rate 2 months after the treatment was 5%(2/38), and was 45%(17/38) 6 months after the treatment. The orthotopic rate was 71%(27/38) 1 year after the treatment. The normal rate of near stereoscopic vision was significantly higher 6 months after the treatment compared to before treatment (χ2 =3.75, P=0.029).The normal rates of near stereoscopic and far stereoscopic vision was significantly higher 1 year after the treantment compared to before treatment (χ2 =14.53, P=0.025; χ2 =15.57, P=0.022). Conclusions: In overcorrected children with intermittent exotropia aged 4-8 years, wearing a press-on prism can help restore the ocular position and stereoscopic vision function.

Key words： intermittent exotropia overcorrection orthotopic rate stereoscopic vision press-on prism

Received: 09 July 2020

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Corresponding Authors: Xiaolin Yin, Department of Ophthalmology, the Second People's Hospital of Ji'nan, Ji'nan 250000, China (Email: yinxiaolin918@163.com)

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https://www.cjoovs.com/EN/ 10.3760/cma.j.cn115909-20200709-00292 OR https://www.cjoovs.com/EN/Y2021/V23/I5/369

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