Chan O Y, Edwards M
Department of Optometry and Radiography, Hong Kong Polytechnic.
Ophthalmic Physiol Opt. 1994 Jul;14(3):249-56. doi: 10.1111/j.1475-1313.1994.tb00005.x.
The major types of ametropia and visual problems for Hong Kong Chinese and Caucasian children are different. Consequently, the referral criteria developed for Caucasian children may not be applicable to Hong Kong children. Results of our study suggested that the referral criteria for Hong Kong children should be set as hyperopia of > or = +2.0 D, myopia of > or = 1.0 D, astigmatism of > or = 1.0 D and anisometropia of > or = 1.25 D. Sensitivity using only these criteria for abnormal refraction in identifying children with amblyopia, esotropia, exotropia and subnormal vision (< 6/12) was respectively 100%, 84.6%, 45.2% and 95.7%. The overall sensitivity for the identification of visual problems was 86.1% and the overall specificity was 76%. If a cover test or a Hirschberg test was introduced into the screening battery so that all the strabismic cases were identified. the overall sensitivity would increase to 98.6%.
香港华人儿童和高加索儿童屈光不正及视力问题的主要类型有所不同。因此，为高加索儿童制定的转诊标准可能不适用于香港儿童。我们的研究结果表明，香港儿童的转诊标准应设定为远视≥ +2.0 D、近视≥ 1.0 D、散光≥ 1.0 D和屈光参差≥ 1.25 D。仅使用这些异常屈光标准来识别弱视、内斜视、外斜视和视力低下（< 6/12）儿童的敏感度分别为100%、84.6%、45.2%和95.7%。识别视力问题的总体敏感度为86.1%，总体特异度为76%。如果在筛查流程中引入遮盖试验或角膜映光法检查，以便识别所有斜视病例，总体敏感度将增至98.6%。
