This is a preliminary report of a research project on nightvision, glare vision and glare recovery utilizing an automatic device, the ZEISS Recording-Nyctometer.

A pilot group of 400 was tested. A questionnaire was administered and an abstract of their driving history obtained. It is planned to examine 10,000 individuals.

The data indicate that nightvision scores cannot be used to predict glare sensitivity scores and vice versa, that nyctometer test scores deteriorate with increasing age and that glare recovery scores are related to sex. Further, there is a connection between accident and conviction history and nyctometer test scores. It was also noted that many examinees overestimated their nightvision and glare recovery. Last, no significant difference was found in the test scores of cigaret smokers and non-smokers.