| http://www.w3.org/ns/prov#value | - e other hand, several topical medications, including mucolytics such as ambroxol and bromhexine, may be used to treat tear-deficient dry eyes by promoting lacrimal gland function.9 However, the effects of mucoactive agents on the tear film have not been investigated systemically, and mucoactive agents may have a disturbing effect on the tear film because they modify mucin.10,11 The tear film is co
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