Monday, September 24, 2007

New Help for those with damaged or diseased corneas

Researchers at Stanford University have developed a new biomimetic hydrogel or polymer that may help restore vision to millions of people who have been blinded due to damaged or diseased corneas.

The Duoptix material, made of two interwoven hydrogels, is transparent and swells to a water content of 80%-similar to biological tissues. The hydrogel is nutrient permeable, allowing the cornea to receive glucose, it’s favorite food. The material is also strong and flexible, allowing it to survive suturing during surgery.

According to Christopher Ta, assistant professor of ophthalmology at Stanford University Medical Center, an 8 week trial for biocompatibility in animals was conducted and the results showed that the lenses remained clear.

Other future applications for the material could include use as more comfortable extended wear contacts, implanted contacts or even replacements for inner-eye lenses damaged by cataracts.

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