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Anatomy, Physiology & Pathology of the Human Eye


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xantholasma
whitish fatty deposits on an eyelid or lids; may be indicative of hyperbetalipoproteinemia, a syndrome characterized by an increased level of low density lipoproteins and their associated lipid components

X-chrome lens
a reddish or maroon colored contact lens worn on one eye, enabling people with certain color deficiencies to estimate or determine the colors of objects

xerophthalmia
a dry thickened lusterless condition of the eyeball resulting especially from a severe systemic deficiency of vitamin A


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