NIH Study Confirms Effectiveness of Eyelid Surgeries for Treating Trachomatous Trichiasis

A large comparison trial funded by the National Institutes of Health (NIH) has shown that the two most common types of eyelid surgeries used to treat trachomatous trichiasis, a leading cause of preventable blindness, are equally effective. The findings, published in PLOS Neglected Tropical Diseases, bring reassurance after earlier, smaller studies suggested that one technique may have poorer outcomes. The study was supported by the National Eye Institute (NEI).

Trachomatous trichiasis occurs when repeated bacterial infections from Chlamydia trachomatis cause the eyelids to turn inward, making the eyelashes scratch the surface of the eye. This condition, affecting approximately 1.7 million people globally, is most prevalent in rural and impoverished areas of Africa, where trachoma infections are common due to close person-to-person contact in unsanitary conditions. Left untreated, the condition can lead to corneal scarring and blindness.

"Some studies have reported post-operative trichiasis rates of 30% or higher following surgery," Emily Gower, PhD, of the University of North Carolina at Chapel Hill, a lead researcher in the trial, said in a National Eye Institute news release. "Repeat surgeries are more difficult, so our goal was to see if we could decrease post-operative trichiasis by modifying the procedure. We found that the existing approaches yield better-than-expected outcomes."

This trial, involving a large cohort of patients, compared two surgical techniques to correct the eyelid malformation caused by trachomatous trichiasis. Earlier studies had raised concerns about the effectiveness of one of the surgeries, but the new findings indicate that both are equally capable of preventing the condition's progression.

The results of the study offer hope for the millions at risk of blindness from trachoma, particularly in regions where healthcare resources are limited and the cost of surgery is a significant barrier. By confirming that both surgical techniques are viable, the study allows doctors in low-resource areas to continue offering a broader range of treatment options with confidence.