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Maddox cross |
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Maddox cross A scale for measuring the angle of heterophoria and heterotropia consisting of one horizontal and one vertical line in the form of a cross with a light source placed at the centre of intersection. The lines are graduated in prism dioptres or degrees and calibrated for use at a given distance (usually 6 metres). Syn. Maddox tangent scale. 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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