The FDA has approved daily disposables that release anti-allergy medication. Experts hope lenses could one day help treat cataracts and glaucoma.
upon us, and for the 40 percent of contact lens wearers who suffer from itchy eyes, there’s a new option for how to treat them: the first lens that can deliver a drug directly to the eye. Made by Johnson & Johnson, they contain the antihistamine ketotifen and were approved by the US Food and Drug Administration earlier this month.
Drug-eluting contact lenses could not only be more comfortable but also deliver more medication into the eye than drops do. However, it’s been a challenge to marry a drug with a specific contact lens. Soft contacts are made of a flexible, water-absorbing plastic called hydrogel that allows oxygen to pass through. But their properties vary from brand to brand.
J&J’s contacts are daily disposables, meaning they’re worn for a day and thrown out. In Phase 3 clinical studies, the contacts reduced itchiness from allergies as quickly as three minutes after putting the lenses in, and the effect lasted up to 12 hours. “When the lens is put on the eye, you get a very rapid release of medication to the eye, and then as the medication continues to elude out over the next several hours, it's a much slower release,” says Pall.
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