Contact Lenses are a Better Option for Babies With Cataract

Contact lenses are a better option than surgical lens replacement therapy in babies with congenital cataract, according to a recent insight.

Researchers said that surgical lens replacement appears to cause more complications while achieving the same treatment benefit as treatment with contact lenses.

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Astigmatism is a refractive error of the eye, which causes blurred or distorted vision. Astigmatism is one of the most common vision problems.

Since the 1970s, contact lenses have been the standard way of treating aphakia (surgical lens removal to treat cataract), they said.

"Their use during infancy, however, can be challenging owing to problems with insertion and removal of lenses by parents, lens loss, difficulties with fitting the steep corneas of infants and compliance problems. These factors among others probably contribute to the poor visual outcome of many children with unilateral aphakia," wrote the authors.

In recent years, the technology to surgically implant a lens directly into the eye (intraocular lens) has improved considerably, noted the authors.

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Dr. Scott R. Lambert, of Emory Eye Center, Atlanta, and colleagues in the Infant Aphakia Treatment Study Group compared visual outcomes and adverse events among 114 infants (median or midpoint age at surgery, 1.8 months) randomly assigned to receive either an intraocular lens or contact lens after cataract surgery.

The rate of complications during surgery was 16 of 57 (28 percent) in the intraocular lens group and six of 57 (11 percent) in the contact lens group.

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Myopia is the inability of a person to see the distant objects clearly. Myopia is also known as near or short sightedness.

At 1 year of age, visual acuity results did not differ between the two groups. However, more adverse events had occurred among children with intraocular lenses (44 or 77 percent vs. 14 or 25 percent), and these children were also five times more likely to undergo additional intraocular operations (36 or 63 percent compared with 7 or 12 percent).

"Thus, there appears to be no short-term visual benefit and some increased risk to implanting intraocular lenses in infants. However, since there remains a possibility that intraocular lenses may be found to be beneficial after a longer follow-up, we feel it would be premature to recommend that intraocular lenses not be implanted in infants," wrote the authors.

Cataract - Causes, Symptoms, Diagnosis, Treatment & Prevention
A cataract is cloudiness in the crystalline lens of the eye that results in a gradually progressive painless diminution of vision.

"We suggest that practitioners continue to exercise caution when considering implanting intraocular lenses in infants. The ultimate role for intraocular lens implantation during infancy may be further clarified after a longer follow-up with these children," they concluded.

The study has been published in the July print issue of Archives of phthalmology, one of the JAMA/Archives journals.

Source-ANI
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