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New contact lens materials
January 29, 2002 at 3:43 PM
Research News
Cavanagh said the study established three important findings. Initially, the hyper-oxygen transmissible soft-lenses produced significantly less bacterial binding than conventional lens with no significant difference between six-night and 30-night wear. Second, researchers noted for the first time a remarkable adaptive recovery after six months with all soft lenses, with a decrease in bacterial binding to the corneal surface. Lastly, 30-night wear produced no significant increases in bacteria binding after one year.
An unexpected finding of the study was that rigid contact lenses appear better for the eye than soft because they promote tear exchange, which washes out debris and allows more oxygen to reach the eye. For the past 20 years, ophthalmologists have warned the public against wearing contact lenses overnight because it could make them more susceptible to eye infections.
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