Sticky Weather Can Cloud LASIK Results

ISLAMABAD: LASIK surgery results can be hurt by warm temperatures and high humidity, increasing the number of people who require follow-up procedures, says a Wake Forest University Baptist Medical Center study.

This study, the first to show that environmental factors can affect LASIK outcomes, found that a 10 percent increase in treatment room humidity meant an additional nine out of every 100 LASIK patients later needed an enhancement procedure.

Outdoor temperatures and humidity in the weeks before a person had LASIK also influenced surgery results, the study found.

The number of eyes requiring enhancement procedure was 0 percent in the winter and 50 percent in September, when outdoor humidity was highest. In less humid months, there was a tendency to overcorrect vision. During humid months, there was a tendency to undercorrect vision.

The study, which included LASIK surgery on 368 eyes of 191 patients, evaluated 12 variables suspected to affect LASIK results.

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