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Night driving performance affected by type of treatment

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ATLANTA — Postoperative night driving performance is strongly associated with the type of treatment performed, with better results stemming from wavefront-guided and femtosecond procedures than from conventional LASIK procedures, a surgeon said here.

Steven C. Schallhorn

"We found that the ablation profile was very significant," Steven C. Schallhorn, MD, said at Refractive Surgery Subspecialty Day preceding the American Academy of Ophthalmology meeting. "In fact that was the dominant factor here, explaining most of the variability that we saw for both detection with and without glare."

Worse postoperative contrast acuity and an increase in glare and halo complaints were associated with a decrease in night driving performance, Dr. Schallhorn said

Fifty-nine subjects answered a questionnaire regarding night vision symptoms, such as changes in halo and glare; 21 underwent wavefront-guided femtosecond LASIK and 38 underwent conventional LASIK with mechanical microkeratome.