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视力检查是儿少卫生工作者的基本操作方法之一。该检查是否合乎要求,方法是否统一,直接影响所得结果和对策。但由于视力检查的目的不同,对执行此项工作要求的严格程度也不一样。视力检查可分为起筛选作用的一般视力检查和作为实验研究手段的特殊视力检查(实验室检查)。前者务求实施简单、迅速、经济、正确、结果可信;后者要求严格、准确,科学性强。许多因素可以影响视力的实测值。如视标形式和种类;视力检查装置的形式;视标或视
Eye exams are one of the basic methods of work for children and less health workers. Whether the inspection meets the requirements, whether the methods are unified and have a direct impact on the results and countermeasures. However, due to the different purposes of eye examinations, the strictness required for the implementation of this work is also different. Visual acuity tests can be divided into general acuity examinations that serve as screening and special visual acuity tests (laboratory exams) as experimental studies. The former is to be implemented simply, rapidly, economically, correctly and with credible results. The latter requires strict, accurate and scientific techniques. Many factors can affect the actual value of vision. Such as optotypes and types; visual inspection device in the form of optotypes or visuals