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New aspheric aberration profile shows safety, efficacy in treatment of hyperopic astigmatism
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WARSAW, Poland — Aspheric femtosecond LASIK offers a reliable method for correction of hyperopic astigmatism, according to one surgeon.
The prevalence of hyperopia tends to decline with age, but latent forms often become significant with the onset of presbyopia. Laser treatment is a well-established procedure but not as straightforward as it is for myopic correction, Thomas Kohnen, MD, said at the winter meeting of the European Society of Cataract and Refractive Surgeons.
Thomas Kohnen
Kohnen presented 6-month results of an ongoing study demonstrating that moderate to high hyperopic astigmatism can be effectively addressed by the new 750 Hz model of the Amaris excimer laser (Schwind) with aspheric aberration profile.
LASIK flaps of 8.5 mm to 9 mm in diameter and 100 µm thickness were created with the IntraLase FS60 (Abbott Medical Optics).
"We treated 72 eyes with up to +4 D of astigmatism. Automated centration was used and optical zones of at least 6.3 mm were created," Kohnen said.
Mean spherical equivalent at 6 months was ±0.03 D, with 78% of eyes experiencing no change in best corrected visual acuity and 22% gaining one or more lines. Uncorrected visual acuity was 20/20 or better in 82% of eyes.
"Predictability was high for a hyperopic treatment, with 89% of the eyes within ±0.5 D and 78% within ±0.25 D of intended correction. No complications occurred during or after surgery," Kohnen said.
Visual quality tests will be conducted as the study continues.
Disclosure: Kohnen has no relevant financial disclosures.