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Correspondence
March 01, 2005

Corneal Power Measurement After Laser In Situ Keratomileusis

Arch Ophthalmol. 2005;123(3):410. doi:10.1001/archopht.123.3.410-a

We read with great interest the article by Sónego-Krone et al1 on corneal power measurement after laser in situ keratomileusis (LASIK). We congratulate the authors on their efforts to collect all these data and contribute their findings. However, we would like to comment on the data collection of the study, in particular the postoperative follow-up information.

In this study, the authors evaluated the corneal power with the Orbscan ΙΙ topography system before and after LASIK and compared the corneal power changes with the refractive changes at the corneal plane. The mean ± SD follow-up for postoperative refraction and topography was 2.54 ± 1.66 months, ranging from 1 to 6 months. As we all know, after a myopic LASIK it usually takes 3 or more months to allow the cornea and refraction to stabilize. For extreme myopic correction, it may take longer.2 When the authors collected data at 1 month after LASIK, they could have obtained inaccurate results. Therefore, the outcomes and conclusion based on these data might be argued. We would like to see observations on those patients who had topography and refraction at least 3 months after LASIK, when the refraction and cornea should be stabilized.

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