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Modified soft contact lens beneficial in penetrating keratoplasty, surgeon says
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A modified contact lens with two holes may help improve the visibility of the surgical field during cataract extraction, according to a Japanese study.
Koji Kawamoto, MD, and colleagues at the Yamaguchi University School of Medicine analyzed data from two groups of nine age-matched patients who underwent a pentrating keratoplasty triple procedure with and without the new contact lens. The new soft contact lens is made of hydroxy-ethly methacrylate with a water content of 33%; the base curve is 8.7 mm, diameter is 14.5 mm, and the new holes are two different sizes, the researchers said.
The lens was designed to help to increase the efficiency of the lens cortex aspiration, the researchers said, and to help surgeons avoid poor visibility.
The new lens reduced the time required for irrigation and aspiration from a mean of 183.8 seconds to a mean of 121.2 seconds. The total operative and open-sky times also decreased greatly, they found.
The article was published in the April issue of Archives of Ophthalmology.