Stavis Monte, Murray Martha, Jenkins Patricia, Wood Robert, Brenham Becky, Jass Jennifer
Pediatric Ophthalmology of Houston, 909 Frostwood, Suite 334, Houston, TX 77024, USA.
Binocul Vis Strabismus Q. 2002;17(2):135-42.
To determine whether base-in prism glasses could diminish asthenopia, and improve reading abilities (speed, accuracy and comprehension).
All patients aged 8-18 years, from one practice, were examined and considered prospectively over a six month period. Ten percent (72) of these 703 patients met initial criteria of an exodeviation greater at near than distance and reading discomfort. At initial examination these 72 were asked to read orally, with and without base-in prisms. If the senior examiner noted they read faster and with fewer mistakes, and the patient reported increased reading comfort, then reading (only) glasses with 2 to 3 diopters base-in prism OU were prescribed. Of the 72, 33 were so treated. After 3 weeks they were given the Gray Oral Reading Test (GORT-3). This test has two equal parts which were administered one with, and one without, prisms. A subjective questionnaire was also administered.
The overall mean improvement in reading speed, accuracy and comprehension on the GORT- 3 with base-in prisms, was from the 34th to the 66th percentile. The improvements in reading were "statistically significant" at p<.001. Patients also reported subjective improvement in asthenopic symptoms and headaches.
Base-in prism glasses improve subjective reading comfort and abilities (speed, accuracy and comprehension) in these patients.
确定底向内棱镜眼镜是否能减轻眼疲劳，并提高阅读能力（速度、准确性和理解力）。
对来自一家诊所的所有8至18岁患者进行检查，并在六个月内进行前瞻性观察。这703名患者中有10%（72名）符合初始标准，即近距外斜视大于远距离外斜视且有阅读不适症状。在初次检查时，要求这72名患者在佩戴和不佩戴底向内棱镜的情况下进行朗读。如果高级检查者注意到他们朗读速度更快且错误更少，并且患者报告阅读舒适度提高，则为其开具双眼佩戴2至3屈光度底向内棱镜的阅读眼镜。这72名患者中，33名接受了这种治疗。3周后，他们接受了格雷口腔阅读测试（GORT - 3）。该测试有两个相等的部分，分别在佩戴棱镜和不佩戴棱镜的情况下进行。还进行了一份主观问卷调查。
佩戴底向内棱镜时，GORT - 3阅读速度、准确性和理解力的总体平均改善从第34百分位数提高到第66百分位数。阅读方面的改善在p<0.001时具有“统计学显著性”。患者还报告眼疲劳症状和头痛有主观改善。
底向内棱镜眼镜可改善这些患者的主观阅读舒适度和能力（速度、准确性和理解力）。
