Method and vision test apparatus for determining the necessity of a vision aid during darkness and/or twilight, and a set of vision aids

摘要

A method and a vision test apparatus determine the necessity of a vision aid during darkness and/or twilight. Also, a set of vision aids are referred to. The daylight defective vision is measured at at least one value of high luminance=10 cd/mSUP2 /SUPand the night defective vision is measured at at least one value of low luminance 10 CD/MSUP2/SUP. Thereafter, the difference between the daylight defective vision and the night defective vision is determined and, when a defined value is exceeded, the recommendation for using a vision aid during darkness and/or twilight is outputted.