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Topographically guided LASIK for myopia reduces glare, halos

J Cataract Refract Surg. 2008;34(11):1862-1871.

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Topographically guided LASIK for myopia with astigmatism using an excimer laser equipped with a customized aspheric treatment zone yielded positive outcomes and high patient satisfaction.

Researchers assessed outcomes using the EC-5000 CX II excimer laser (Nidek). The study, conducted at four clinics in the United States and Mexico, included 135 eyes with spherical manifest refraction error ranging from –0.50 D to –7 D and 0.50 D to 4 D of astigmatism.

Six months after surgery, mean manifest refraction spherical equivalent in all eyes was –0.90 ± 0.31 D; 88.55% of eyes had uncorrected visual acuity of 20/20 or better, and 93.13% of eyes had manifest refraction spherical equivalent within ±0.50 D.

Best corrected visual acuity improved two or more lines in 16.03% of eyes. No eyes lost two or more lines of BCVA. Total ocular higher-order aberrations increased by 0.04 µm. Patients reported markedly fewer glare and halo symptoms after surgery than before surgery.