帮助盲人和视力部分受损者阅读：低视力辅助器具的有效性。
Helping blind and partially sighted people to read: the effectiveness of low vision aids.
作者信息
Margrain T H
机构信息
Department of Optometry and Vision Sciences, Cardiff University, PO Box 905, King Edward VII Avenue, Cardiff CF1 3XF.
出版信息
Br J Ophthalmol. 2000 Aug;84(8):919-21. doi: 10.1136/bjo.84.8.919.
AIMS
To substantiate the claim that low vision aids reduce the degree of disability associated with visual impairment.
METHODS
An observational study of vision, ocular pathology, age, sex, and reading ability in new referrals to a low vision clinic. Reading ability was assessed both with the patients' own spectacles and with an appropriate low vision aid.
RESULTS
The reading performance and biographical characteristics of new referrals to a low vision clinic were recorded. Data were collected for 168 people over a 6 month period. Upon arrival at the clinic the mean functional visual acuity equated to 6/36 and 77% of patients were unable to read newsprint (N8). After a low vision assessment and provision of a suitable low vision aid 88% of new patients were able to read N8 or smaller text.
CONCLUSIONS
The degree of visual impairment observed in new referrals to a low vision clinic is sufficient to prevent the majority from performing many daily tasks. Low vision aids are an effective means of providing visual rehabilitation, helping almost nine out of 10 patients with impaired vision to read.
目的
证实低视力辅助器具可降低与视力损害相关的残疾程度这一说法。
方法
对一家低视力诊所新转诊患者的视力、眼部病理学、年龄、性别和阅读能力进行观察性研究。阅读能力通过患者佩戴自己的眼镜以及使用合适的低视力辅助器具进行评估。
结果
记录了一家低视力诊所新转诊患者的阅读表现和个人信息特征。在6个月期间收集了168人的数据。到达诊所时，平均功能性视力相当于6/36，77%的患者无法阅读报纸印刷体文字（N8）。经过低视力评估并提供合适的低视力辅助器具后，88%的新患者能够阅读N8或更小的文字。
结论
在一家低视力诊所新转诊患者中观察到的视力损害程度足以使大多数人无法完成许多日常任务。低视力辅助器具是提供视力康复的有效手段，可帮助近十分之九的视力受损患者进行阅读。
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