对文盲人群的视力筛查。
Vision screening of illiterate populations.
作者信息
Thylefors B
出版信息
Bull World Health Organ. 1977;55(1):115-9.
To assess the amount of reduced vision in a population is an important public health matter, especially in areas where blinding diseases are endemic. Testing visual acuity is, however, a complex problem when a major part of the population is illiterate. The best-known test of vision is the E-test, but this produces the problem of untestability in illiterate populations.The introduction of the Sjögren hand-test as an alternative to the E-test for vision screening of unselected illiterate populations in West Africa resulted in a highly significant reduction of untestability. For certain vision levels it is possible to correlate the results of the hand-test directly with those of the E-test. The hand-test is less well defined than the E-test, but has important advantages for the purpose of vision screening of illiterate populations.
评估人群中视力下降的程度是一项重要的公共卫生问题，尤其是在致盲性疾病流行的地区。然而，当大部分人口为文盲时，视力测试是一个复杂的问题。最著名的视力测试是E字视力表测试，但这在文盲人群中会产生无法测试的问题。在西非，引入舍格伦手部测试作为对未经过筛选的文盲人群进行视力筛查的E字视力表测试的替代方法，使得无法测试的情况大幅减少。对于某些视力水平，可以直接将手部测试的结果与E字视力表测试的结果进行关联。手部测试的定义不如E字视力表测试明确，但对于文盲人群的视力筛查而言具有重要优势。
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