Evans J R, Wormald R P
Academic Unit for Ophthalmology, Western Ophthalmic Hospital, London, UK.
Eye (Lond). 1993;7 ( Pt 1):172-9. doi: 10.1038/eye.1993.37.
The quality of information collected during certification for blindness and partial sight was assessed using a combination of review of the literature on registration and analysis of 17,695 BD8 certificates received by the Office of Population Censuses and Surveys (OPCS) between June and November 1990. Three problems were identified which affect the epidemiological function of these data: interpretation of the definitions of blindness and partial sight has changed over time; the degree of under-certification is unknown (although it could be as high as 64% for blind and 77% for partially sighted people); and the cause of visual disability recorded by the ophthalmologist may not always be adequately transmitted into the statistical analyses. Guidelines for completion of part 5 of the BD8 form need to be developed. Strategies for improving the quality of these data are discussed.
通过对登记相关文献的回顾以及对人口普查与调查办公室（OPCS）在1990年6月至11月间收到的17,695份BD8证书进行分析相结合的方式，对失明和视力部分丧失认证过程中收集的信息质量进行了评估。发现了三个影响这些数据流行病学功能的问题：失明和视力部分丧失的定义解释随时间发生了变化；认证不足的程度未知（尽管失明者可能高达64%，视力部分丧失者可能高达77%）；眼科医生记录的视力残疾原因可能并非总能充分纳入统计分析。需要制定填写BD8表格第5部分的指南。讨论了提高这些数据质量的策略。
