A study published in Cornea showed that the ocular antihistamine ketotifen was effectively delivered via a contact lens also designed for visual correction.
Currently available topical antiallergic medications are comparable to this contact lens delivery method in efficacy, the authors said; however, they require that an individual removes his or her contact lenses prior to application.
“This is, in part, because of concerns regarding interactions between lenses and drop preservatives and also because clinical studies of allergy drops have typically excluded contact lens users from study
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