Patient response to PMMA contact lenses

This study was designed to determine patient response to hard (PMMA) contact lenses and evaluate how lens modifications and refitting affect success. The subjects of this study were 178 randomly selected contact lens patients fitted at the University of California School of Optometry. Six to nine months after the patients were examined and fitted, their response to contact lenses was evaluated using the standard of Sarver and Harris. 44.4% of the patients were successful with the initial lenses while an additional 35.4% of the patients became successful after appropriate lens changes were made. The majority of the changes made were to eliminate ocular tissue changes. Our results indicate that lens modifications or refittings are often necessary to achieve a successful response to contact lenses.