Dark adaptation in two healthy male subjects was studied by means of a Nagel's adaptometer.

摘验时施用平流电，故可使那盖氏暗适应计之度稳不变。

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为标准进行对比测。