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Broca's pupillometer |
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pupillometer, Broca's A subjective instrument for measuring the diameter of the pupil. It consists of a pair of very small light sources placed at the anterior focal plane of the eye. The two sources are separated until the circular, out of focus images on the retina are seen in juxtaposition. The distance between the two sources represents the diameter of the pupil. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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