Tuesday, September 09, 2008

Eye drops no more

A tiny coil, which is implanted in the eye, could mean an end to the injections and drops used by thousands of patients with common eye complaints.

The spiral-shaped" device, which is inserted through a hollow needle, can be loaded with drugs to treat conditions, such as glaucoma and diabetic macular edema. Called the I-vation, the device is similar to a Slinky toy, and made from a metal alloy. The implant is injected into the eye...in a minimally invasive procedure that takes just 15 minutes.


Medications are mixed into a material which coats the device. Then, as the coating slowly dissolves, they are released over a period of up to two years, medicating the eye continuously.
Here is a comparison of the device with a quarter:

The device's "coiled shape" provides a large surface area available for the drug coating, and also makes it possible to lodge it against the white of the eye, without the need for stitches, and where it can be easily removed and replaced.

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