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brief-report

Early Use of Eyeglasses for Myopia Predicts Long Axial Length of the Eye

Joseph Bayes, MD^*, Hui Zheng, PhD, and Carl E. Rosow, MD, PhD

From the *Department of Anesthesia, Massachusetts Eye and Ear Infirmary, Harvard Medical School; Biostatistics Center, and Department of Anesthesia and Critical Care, Massachusetts General Hospital, Boston, Massachusetts.

Address correspondence to Joseph Bayes, MD, Department of Anesthesia, Massachusetts Eye and Ear Infirmary, 243 Charles St., Boston, MA 02114. Address e-mail to joseph_bayes{at}meei.harvard.edu.

Abstract

Patients with long axial length (AL) eyes (>25 mm) are at increased risk of globe perforation during performance of intraconal (retrobulbar) eye block. These patients often require glasses or contact lenses for myopia (nearsightedness) as children or young adults. A history of early correction for myopia might, therefore, be a predictor of long AL eyes. One hundred one patients undergoing cataract surgery had AL measured and answered questions about their use of corrective lenses. We found that a history of correction for myopia as a child or young adult was 82% sensitive and 84% specific for having a measured AL 25 mm. Patients with this history may be at increased risk for globe perforation during intraconal block.