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H. Y. Seo, D. M. Shin, D. J. Lee, W. J. Jung, H. B. Ahn, S. H. Rho, W. C. Park; Short Term Result of Presbyopic Correction Using Kera Laser. Invest. Ophthalmol. Vis. Sci. 2009;50(13):554.
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© ARVO (1962-2015); The Authors (2016-present)
To Analyze the short term results of presbyopic correction using Kera Laser
The study included 60 eyes of 32 patients (F/U: over 6 months) treated LASIK presbyopia correction using Kera laser. Patients were divided into two groups (myopic 34 eyes and hyperopic 26 eyes). Mean patient age was 52.30 years, mean preop. spherical equivalent was -2.86±1.87 (myopic) and 0.84±0.50 (hyperopic). The ablation pattern creates a multifocal corneal profile of central 3mm optical zone for distance and next up to 9mm for near correction. Main outcome measures were uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA) for near and distance, spherical equivalent refraction, contrast sensitivity and ocular aberrations.
Six months postoperatively, mean UCVA was 0.84±0.19 for distance, 0.65±0.14 (nearly J2) for near at myopic group and 1.06±0.09 for distance, 0.64±0.21 (nearly J2) for near at hyperopic group. Mean postoperative spherical equivalent refraction was -0.78±0.38D at myopic group, 0.19±0.09D at hyperopic group. Four (6.7%) eyes lost more 1 line of BCVA for distance, and 14 (23.3%) eyes gained more 1 line of distance BCVA. Contrast sensitivity decreased at postop. 1 month but, recovered after postop. 3 month. Ocular wavefront analysis increased at coma, spherical aberration and total high order aberration.
The Kera laser presbyopia surgery is a safe and efficient treatment that may improve functional near and far vision in myopic and hyperopic presbyopia.
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