adaptometer
1.Simultaneously, the adaptometer begin timing until the driver can see the visual target clearly.
2.A Chinese-madeYA-Ⅱ dark adaptometer was used to measure the status of vitamin A of110 students. The mean time of dark adaptation was 48.4±21.03 s.
3.37 diabetic patients and 49 normal subjects were examined with Goldmann-Weekers dark adaptometer. The results showed that the absolute thresholds of dark adaptation in each group of diabetic patients were higher than those in normal controls. The more severe retinopathy was, the higher was the absolute threshold.

