@article{ref1,
title="Low contrast visual acuity and the effects of ambient illumination, filters and scatter",
journal="American journal of optometry and archives of American Academy of Optometry",
year="1967",
author="Pease, P. L. and Allen, Merrill J.",
volume="44",
number="4",
pages="226-232",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9408",
doi="",
url="http://dx.doi.org/"
}