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Robert C. Arffa, MD; Thomas L. Marvelli, MD; Keith S. Morgan, MD

Arch Ophthalmol. 1985;103(11):1656-1659.

Abstract
• Keratometric and refractive results of pediatric epikeratophakia showed that patients under 1 year of age had steeper corneas preoperatively and required more correction, as estimated by the Sanders-Retzlaff-Kraff regression formula. The average spherical equivalent of refractive error six months postoperatively was +6.92 ± 4.67 diopters in patients under 1 year, and –0.72 ± 4.22 D in patients over 1 year. Three of 14 younger patients and 35 of 54 older patients were within 3 D of emmetropia. Since March 1982, significant undercorrection has occurred only in patients 6 months old or younger. Younger children achieved an average of 46% of the predicted change in corneal curvature, while older children achieved 85%. Also, the Sanders-Retzlaff-Kraff formula may be inaccurate in estimating powers for younger children. Therefore, we recommend at this time that epikeratophakia be used as a secondary procedure in neonates with congenital cataracts.

Author Affiliations
From the Lions Eye Research Laboratories, Louisiana State University (LSU) Eye Center, LSU Medical Center School of Medicine, New Orleans.

Footnotes
Accepted for publication July 5, 1985.

Reprint requests to LSU Eye Center, 136 S Roman St, New Orleans, LA 70112 (Dr Morgan).

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