1.Making when establishing a check-up, had better be to be in warm environment, let a patient shuck off jacket, back to scrutator.

1.在作检时，最好是在温暖环境中，让患者脱去上衣，背检查者。

2.Without dark adaptation plan person, can use a patient the normal light of be good at eye or scrutator becomes aware undertake contrasting determining for the standard.

2.无暗适应计者，可利用患者健眼或检查者光觉为标准进行对比测定。