Contact lenses to dispense drugs

Eye-drops may be a simple way of medicating the eye, but patients don't always get the right dose at the right time. Eyenovations has developed contact lenses that can deliver drugs to the eye in measured doses for a month or longer. The start-up company's initial focus is developing a lens to help glaucoma patients. However, it believes the technology can be used to help other eye conditions and deliver antibiotics following surgery.

The team from Cambridge, Massachusetts has developed the drug-dispensing technology using a hydro-gel lens with a polymer film inside, which contains the medication.

The lens gradually releases the medication at a rate determined by the properties of both the lens and polymer film. Future versions may allow the medication to be stored in the hydro-gel material of the lens. This ensures patients with eye conditions requiring drops, especially those who struggle to follow a medication schedule, receive the right amount of medication at the right time.

Source: gizmag.comAdded: 3 June 2009