1. Making when establishing a check-up, had better be to be in warm environment, let a patient shuck off jacket, back to scrutator. 在作立位体检时，最好是在温暖的环境中，让患者脱去上衣，背向检查者。
2. The two method have them own's excellence. The PSD-V-A method is brief and straight, but depends most on scrutator's experiences. 两种方法各有特点，PSD-V-A方法简练直观，但对检测人员的经验比较依赖；
3. 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. 无暗适应计者，可利用患者健眼或检查者的正常光觉为标准进行对比测定。
