A comparison of levels of edema induced by Polycon and Rx-56 lens wear was made using pachometric data and slit lamp evaluation. Ten subjects simultaneously wore an Rx-56 lens on one eye and a Polycon lens on the other for a period of three hours. An electronic digital pachometer was used to monitor changes in corneal thickness. No statistical significant difference was found in levels of edema induced by wearing the two brands of lenses.
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