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    What is the best way to correct congenital cataracts?

    Comparative study finds no benefit, potential downside of piggyback IOL approach

    Tehran, Iran—Piggyback IOL implantation is an optically acceptable option for refractive correction after cataract surgery in infants.

    However, the approach does not result in better visual outcomes compared with leaving the eye primarily aphakic and using other methods for optical correction.

    Furthermore, when the cataract surgery is performed during the first six months of life, piggyback IOL implantation exposes the child to a higher incidence of reoperations for complication management, according to the results of a study conducted by Mohammad Soleimani, MD, assistant professor, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran.

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    “Optical correction after surgery for congenital cataract remains controversial. The sample size in our study was small and so it was not adequately powered to rule out a difference in visual outcomes between groups if it does exist,” Dr. Soleimani said. “Therefore, studies including a larger population are needed to confirm or reject our findings.”

    Dr. Soleimani and colleagues at the Farabi Eye Hospital, Tehran University of Medical Sciences, undertook a comparative study to evaluate the long-term efficacy and safety of piggyback IOL implantation versus aphakia for infantile cataract.

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    It included infants operated on between 1998 and 2007. There were 23 eyes of 14 infants that received a piggyback IOL and 32 eyes of 20 infants left aphakic after the cataract surgery.

    “The findings of our study do favor leaving the eye aphakic,” he said. “In practice, however, it is important to individualize the decision by taking into account parental compliance with contact lens wear or spectacles that is critical for a good visual outcome.”

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    In the piggyback IOL group, a permanent posterior IOL was implanted in the capsular bag at the time of cataract surgery and a second temporary IOL was placed in the ciliary sulcus with the plan to explant the sulcus IOL later in life to compensate for changing refraction. In the aphakic group, optical correction was provided with contact lenses, spectacles, or secondary IOL implantation.


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