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What Is the Appropriate Baseline?

Arch Ophthalmol. 1998;116:1104-1105.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

MARTÍNEZ ET AL¹ should be commended for attempting to analyze potential visual complaints associated with photorefractive keratectomy (PRK). Their study is well performed and the article concise and clearly written. The reader, however, (as for all studies) needs to determine whether the study design is appropriate and if the conclusions are clinically relevant. In this article, Martínez et al compare the optical aberration of the anterior corneal surface after PRK with a 5-mm optical zone with 3- and 7-mm pupil sizes to the preoperative cornea. There are many problems with the study design that may limit the clinical applicability.

It has become common to discuss the visual degradation and optical effects of refractive surgery.^2-3 Often, as in this study, comparisons are made to the preoperative cornea. While the unaltered, preoperative cornea may perform well on an optical bench, it has serious shortcomings for the patient with a refractive error. Patients . . . [Full Text of this Article]

RELATED ARTICLE

Effect of Pupillary Dilation on Corneal Optical Aberrations After Photorefractive Keratectomy
Carlos E. Martínez, Raymond A. Applegate, Stephen D. Klyce, Marguerite B. McDonald, Jan P. Medina, and Howard C. Howland
Arch Ophthalmol. 1998;116(8):1053-1062.
ABSTRACT | FULL TEXT