Intrastromal corneal ring segments may benefit patients with keratoconus, according to the results of a prospective but not randomized trial reported in the January issue of the American Journal of Ophthalmology.
The investigators suggest that this procedure may help to avoid or postpone the need for penetrating keratoplasty. “To date, the therapeutic options for patients with keratoconus are limited to spectacles and contact lenses, while in the advanced stages of the disease the accepted approach is penetrating keratoplasty,” write Charalambos S. Siganos, MD, PhD, and colleagues from the University of Crete in Greece.
“Intrastromal corneal ring segments (Intacs; Addition Technology Inc., Fremont, California) were designed to achieve a refractive adjustment by flattening the central corneal curvature while maintaining clarity in the central optical zone.”
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