Even though eye drops account for 90 percent of all eye medication, doctors guess that only 1 to 7 percent of the medication actually gets absorbed into the eye, while the rest trickles down the cheeks. Moreover patients hate eye drops or forget to take them. Researchers have been working for almost a decade on drug-dispensing contact lenses that could deliver eye medication more effectively and now finally created a contact lens that can deliver a high concentration of antibiotic at a constant rate for more than 30 days. Previous design attempts focused on dissolving medication into the hydrogel material that contacts are made of, and then integrating the particles into the hydrogel lens. The Boston researchers explain their new design is like a pita pocket, with a big wad of drug in the middle of a hydrogel exterior. Source