Alizadeh Yousef, Medghalchi Abdolreza, Soltanipour Soheil, Mohammadi Mohammad J, Soltani-Moghadam Reza, Behboudi Hassan, Azaripour Ebrahim, Soleimani Altinai
Department of Eye, Eye Research Center, Amiralmomenin Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
Department of Community Medicine, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
Int J Prev Med. 2023 Jun 22;14:80. doi: 10.4103/ijpvm.ijpvm_130_22. eCollection 2023.
The basis of the overcorrecting minus lens is to induce compliance and consequently prevent constant exotropia. Some previous studies advocated early surgical therapy and others suggested over-minus treatment. Our purpose is to evaluate the success rate of the over-minus lens.
This descriptive cross-sectional study was carried out on 106 patients under the age of 7 years with intermittent exotropia (IXT) who attended Amir-Al-Momenin Hospital at Guilan University of Medical Sciences, Iran. The data was gathered by a form including sex, age, level of cycloplegic refraction, the amount of deviation before and after using the over-minus glasses, visual acuity, the amount of the over-minus glasses, duration of treatment, recovery, and follow-up. The success rate was defined as decreasing exotropia to less than ten prism diopters or exophoria.
A total of 106 patients with a mean age of 2.25 ± 0.74 years were enrolled in this study. The mean exotropia before and after treatment was 20.96 ± 8.20 and 12.16 ± 11.04 prism diopters, respectively, and there was a statistically significant difference ( < 0.002). The mean refractive spherical and astigmatic errors (cycloplegic refraction) were +1.34 ± 1.07 and -0.32 ± 0.72 diopters, respectively. At the end of the follow-up, exotropia increased in 5.6% of patients, there was no change in 15% of patients with a mean deviation of 25.0 ± 6.06 prism diopters, and 79.24% of patients were treated successfully.
According to the results of this study, treatment of IXT by over-correcting lenses can be a safe procedure and effective in preventing exotropia.
过矫负透镜的原理是促使患者配合治疗，从而预防恒定性外斜视。此前一些研究主张早期手术治疗，另一些则建议采用过矫负透镜治疗。我们的目的是评估过矫负透镜的成功率。
这项描述性横断面研究对106例年龄在7岁以下的间歇性外斜视（IXT）患者进行，这些患者来自伊朗吉兰医科大学阿米尔 - 穆民医院。通过一份表格收集数据，内容包括性别、年龄、睫状肌麻痹验光度数、佩戴过矫眼镜前后的斜视度数、视力、过矫眼镜度数、治疗时长、恢复情况及随访情况。成功率定义为外斜视度数降低至小于10棱镜度或转为外隐斜。
本研究共纳入106例平均年龄为2.25±0.74岁的患者。治疗前后的平均外斜视度数分别为20.96±8.20和12.16±11.04棱镜度，差异具有统计学意义（<0.002）。平均屈光性球镜和散光度数（睫状肌麻痹验光）分别为+1.34±1.07和-0.32±0.72屈光度。随访结束时，5.6%的患者外斜视度数增加，15%的患者无变化，平均斜视度数为25.0±6.06棱镜度，79.24%的患者治疗成功。
根据本研究结果，使用过矫透镜治疗间歇性外斜视是一种安全有效的预防外斜视的方法。
