@article{ref1,
title="Some seeing problems: spectacles, color, driving and decline from age and poor lighting",
journal="American journal of optometry and archives of American Academy of Optometry",
year="1972",
author="Richards, O. W.",
volume="49",
number="7",
pages="539-546",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9408",
doi="",
url="http://dx.doi.org/"
}