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Small study demonstrates hyperopia regression after CK

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LAS VEGAS — Conductive keratoplasty appears effective for short-term correction of hyperopia, but the visual improvement erodes over the long-term due to regression, according to a surgeon speaking here.

Jason S. Erlich

Jason S. Erlich, MD, PhD, presented the results of a prospective study involving 25 eyes of 14 patients with mild-to-moderate hyperopia at the American Academy of Ophthalmology meeting. All eyes had been treated using conductive keratoplasty (ViewPoint CK, Refractec Inc.), he said.

Patients had a mean baseline manifest refraction spherical equivalent (MRSE) of +1.47 D. At 12 months follow-up, mean MRSE had been corrected to +0.36 D. However, at a final mean follow-up of 55.3 months, mean MRSE had reverted back to +1.23 D, Dr. Erlich said.

"We feel that patients undergoing this treatment should be counseled that the effects might not be permanent," he said.

The rate of hyperopia regression was higher than natural rates reported in such large-scale studies at the Blue Mountain Eye Study, Dr. Erlich noted. "I don't think our data can be explained by progression of the patients' hyperopia alone," he said.