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Medical Definition of Tear film
1. A protective film, 7 to 9 nm thick, consisting of external oily, intermediate watery, and deep mucoprotein layers. Synonym: tear film. (05 Mar 2000)
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1. A protective film, 7 to 9 nm thick, consisting of external oily, intermediate watery, and deep mucoprotein layers. Synonym: tear film. (05 Mar 2000)