Correction of Presbyopia in Hyperopia With a Center-distance, Paracentral-near Technique Using the Technolas 217z Platform
2008; Slack Incorporated (United States); Volume: 24; Issue: 5 Linguagem: Inglês
10.3928/1081597x-20080501-07
ISSN1938-2391
AutoresRoberto Pinelli, Dolores Ortiz, Anna Simonetto, Cristian Bacchi, Esperanza Sala, Jorge L. Alió,
Tópico(s)Glaucoma and retinal disorders
ResumoPurpose To analyze the results of hyperopic patients treated with a peripheral presbyLASIK algorithm for the correction of presbyopia. Methods The study included 44 eyes of 22 hyperopic patients treated with a peripheral presbyLASIK technique using a Technolas 217z excimer laser. Mean patient age was 56 years (range: 47 to 72 years), mean preoperative spherical equivalent refraction was +1.21±0.77 diopters (D) (range: +0.50 to +4.00 D), and mean spectacle near addition was +1.76±0.42 D (range: +1.00 to +2.75 D). The Peripheral Multifocal LASIK (PML) ablation pattern creates a multifocal corneal profile over a 6.5-mm diameter, performing the distance correction first in a 6-mm optical zone and then near correction in a 6.5-mm zone. Main outcome measures were uncorrected visual acuity (UCVA) and best spectacle-corrected visual acuity (BSCVA) for near and distance, spherical equivalent refraction, contrast sensitivity, and corneal aberrations. Results Six months postoperatively, mean binocular UCVA was 1.06±0.13 for distance and 0.84±0.14 for near. Mean postoperative spherical equivalent refraction was −0.42 D (range: −1.12 to +0.87 D). Two (4.5%) eyes lost 1 line of BSCVA for distance and near vision, and 20 (45%) eyes gained 1 line of distance BSCVA. Contrast sensitivity decreased for 3, 6, 12, and 18 cycles/degree. Corneal aberration analysis showed a slight increase in coma and decrease in spherical aberration. Conclusions The peripheral presbyLASIK technique used in this study is a safe and efficient treatment that may improve functional near vision in presbyopic patients with low and moderate hyperopia (from +0.50 to +3.00 D). [ J Refract Surg. 2008;24:494–500.]
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