@article{ref1,
title="Lenses for night driving",
journal="Highway Research Board bulletin",
year="1962",
author="Bryan, Wendell E.",
volume="336",
number="",
pages="104-104",
abstract="A lens principle is described for night driving that does not encompass any tint directly over the pupil, but causes a shadow effect to fall across the pupil to eliminate the oncoming glare of headlights. This lens consists of a calobar green slab-off on a white lens. These lenses must be fitted on prescription so that the line of demarcation between the white and the green falls 3 mm to the left side of the night pupil. Research and tests on this lens are reported. The general acceptance of the lens on the individual fitted has been encouraging.<p />",
language="",
issn="0073-2206",
doi="",
url="http://dx.doi.org/"
}