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Corneal measurements not affected by long-term soft contact lens wear
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FORT LAUDERDALE, Fla. — Use of soft contact lenses for up to 32 years does not appear to have a significant impact on key corneal measurements, a study found.
"Long-term soft contact lens wear seems not to alter the corneal biomechanical properties," Anja Kissner, MD, and colleagues said in a poster at the Association for Research in Vision and Ophthalmology meeting here.
Dr. Kissner and colleagues conducted a prospective clinical trial of 34 eyes of 17 subjects who wore soft contact lenses. The eyes were divided into two groups: intermediate contact lens wear or long-term wear. Contact lens wear ranged from 2 years to 32 years.
In addition, a control group of 34 eyes of 17 subjects had no history of contact lens use.
The study examined corneal hysteresis and corneal resistance factor by Ocular Response Analyzer (Reichert) and central corneal thickness by ultrasound pachymetry. A formula was used to define results.
The researchers found no statistically significant differences between the two contact lens wear groups and the control group for all measurements and results.