Spectacle wearing in children randomised to ready-made or custom spectacles, and potential cost savings to programmes: study protocol for a randomised controlled trial

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• 作者：Priya Morjaria ; Kaushik Murali ; Jennifer Evans ; Clare Gilbert
• 关键词：Uncorrected refractive errors ; Children ; School eye health ; India ; Spectacle wearing rate ; Ready ; made spectacles ; Randomised clinical trial
• 刊名：Trials
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：17
• 期：1
• 全文大小：509 KB
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• 作者单位：Priya Morjaria (1)
  Kaushik Murali (2)
  Jennifer Evans (1)
  Clare Gilbert (1)
  
  1. International Centre for Eye Health (ICEH), Clinical Research Department, London School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
  2. Sankara Eye Hospital, Varthur Main Road, Marthahalli, Bangalore, Karnataka, 560037, India
  
• 刊物主题：Medicine/Public Health, general; Biomedicine general; Statistics for Life Sciences, Medicine, Health Sciences;
• 出版者：BioMed Central
• ISSN：1745-6215

文摘

Background Uncorrected refractive errors are the commonest cause of visual impairment in children, with myopia being the most frequent type. Myopia usually starts around 9 years of age and progresses throughout adolescence. Hyperopia usually affects younger children, and astigmatism affects all age groups. Many children have a combination of myopia and astigmatism. To correct refractive errors, the type and degree of refractive error are measured and appropriate corrective lenses prescribed and dispensed in the spectacle frame of choice. Custom spectacles (that is, with the correction specifically required for that individual) are required if astigmatism is present, and/or the refractive error differs between eyes. Spectacles without astigmatic correction and where the refractive error is the same in both eyes are straightforward to dispense. These are known as ’ready-made’ spectacles. High-quality spectacles of this type can be produced in high volume at an extremely low cost. Although spectacle correction improves visual function, a high proportion of children do not wear their spectacles for a variety of reasons. The aim of this study is to compare spectacle wear at 3–4 months amongst school children aged 11 to 15 years who have significant, simple uncorrected refractive error randomised to ready-made or custom spectacles of equivalent quality, and to evaluate cost savings to programmes. The study will take place in urban and semi-urban government schools in Bangalore, India. The hypothesis is that similar proportions of children randomised to ready-made or custom spectacles will be wearing their spectacles at 3–4 months.