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M Millodot; Corneal sensitivity in people with the same and with different iris color.. Invest. Ophthalmol. Vis. Sci. 1976;15(10):861-862.
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Corneal touch thresholds were determined for both eyes of 15 people with different colored irides (a condition known as heterochromia) and of 25 people with similar colored irides. It was found that corneal sensitivity is not significantly different in both eyes of either group. Therefore it is suggested that the fact previously demonstrated that corneal sensitivity is related to iris color is not of corneal origin.
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