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Clinical Trials
January 2010

The Infant Aphakia Treatment Study: Design and Clinical Measures at Enrollment

The Infant Aphakia Treatment Study Group
Author Affiliations

ANNE S.LINDBLADPhDAuthor Affiliations: The Infant Aphakia Treatment Study Group Writing Committee: Scott R.LambertMD (lead author), Emory University, Atlanta, Georgia; Edward G.BuckleyMD, Duke University, Durham, North Carolina; CarolynDrews-BotschPhD, Emory University; LindrethDuBoisMEd, MMSc, Emory University; EugenieHartmannPhD, University of Alabama, Birmingham; Michael J.LynnMS, Emory University; David A.PlagerMD, Indiana University, Indianapolis; and M. EdwardWilsonMD, Medical University of South Carolina, Charleston.

Arch Ophthalmol. 2010;128(1):21-27. doi:10.1001/archophthalmol.2009.350

Objective  To compare the use of contact lenses and intraocular lenses (IOLs) for the optical correction of unilateral aphakia during infancy.

Methods  In a randomized, multicenter (12 sites) clinical trial, 114 infants with unilateral congenital cataracts were assigned to undergo cataract surgery with or without IOL implantation. Children randomized to IOL treatment had their residual refractive error corrected with spectacles. Children randomized to no IOL treatment had their aphakia treated with a contact lens.

Main Outcome Measures  Grating acuity at 12 months of age and HOTV visual acuity at 4½ years of age.

Application to Clinical Practice  This study should determine whether either treatment for an infant with a visually significant unilateral congenital cataract results in a better visual outcome.

Results  Enrollment began December 23, 2004, and was completed January 16, 2009. The median age at the time of cataract surgery was 1.8 months. Fifty patients were 4 to 6 weeks of age at the time of enrollment; 32, 7 weeks to 3 months of age; and the remaining 32, more than 3 to less than 7 months of age. Fifty-seven children were randomized to each treatment group. Eyes with cataracts had shorter axial lengths and steeper corneas on average than the fellow eyes.

Conclusions  The optimal optical treatment of aphakia in infants is unknown. However, the Infant Aphakia Treatment Study was designed to provide empirical evidence of whether optical treatment with an IOL or a contact lens after unilateral cataract surgery during infancy is associated with a better visual outcome.

Trial Registration  clinicaltrials.gov Identifier:NCT00212134

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