Explanation of Broca's pupillometer.

R W West
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Abstract

Broca's pupillometer offers a simple and effective means of measuring the diameter of the pupil. However, it is often used without proper attention to the limitations of its optics. Errors of measurement may result from uncorrected refractive error, accommodation, spectacle correction, and spherical aberration (SA). A simple means of minimizing these errors is to hold the pinholes (PH's) of the pupillometer as close to the cornea as is feasible.

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布洛卡瞳孔计的解释。
布洛卡的瞳孔计提供了一种简单有效的测量瞳孔直径的方法。然而,它的使用往往没有适当注意其光学的局限性。测量误差可能由未校正的屈光不正、调节、眼镜校正和球差(SA)引起。最小化这些误差的一个简单方法是使瞳孔计的针孔尽可能靠近角膜。
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Age differences in Vistech near contrast sensitivity. Quantitative photorefraction using an off-center flash source. The International Optometric and Optical League. Undercorrection and myopia development. Optometry and science.
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