OSN SuperSite Top Story 11/28/2006

Intacs stabilized ectasia in post-LASIK corneas for 5 years

Corneas that developed ectasia after LASIK were stabilized for at least 5 years with the use of intrastromal corneal ring implants, according to a recently published small, retrospective study.

Patients implanted with Intacs ring segments maintained refractive stability from 1 year to 5 years' follow-up, with no evidence of progressive time-dependent ectasia, the study authors said. Intacs intrastromal corneal ring segments were made by KeraVision at the time the study commenced. The technology has since been acquired by Addition Technology.

George D. Kymionis, MD, PhD, and colleagues at the University of Crete, Greece, reviewed the long-term refractive and mechanical stability of eight post-LASIK ectatic eyes that were implanted with the Intacs ring segments.

Intacs were implanted at least 12 months after patients had undergone LASIK. Surgeons implanted two segments in each eye using the normal technique for correcting myopia with the implants — one placed nasally and one temporally. The thickness of the Intacs segments was based on the desired correction and the spherical equivalent refraction, the study authors said.

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