TL concentration correlated positively with tear film breakuptime and negatively with fluorescein staining scores in patients with LTD.
LTD组TL的浓度与泪膜破裂时间呈正相关,与荧光染色分数呈负相关。
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Objective Studying on the tear film breakuptime of middle old aged folks to find out the affecting factors related to the stability of tear film of eyes.