Objective quality of vision in presbyopic and non-presbyopic patients after pseudoaccommodative advanced surface ablation.

Purpose: To analyze the objective quality of vision at 6 months postoperatively after pseudoaccommodative (presbyopic) advanced surface ablation (PASA).

Methods: The study comprised 62 eyes of 35 patients with 6-month follow-up that underwent primary or secondary treatments using PASA. Pre- and postoperative results of distance and near uncorrected visual acuity (UCVA), spherical aberration (coefficient of the Z12 Zernike polynomial), and the asphericity (Q) index were reviewed.

Advanced surface ablation for presbyopia using the Nidek EC-5000 laser.

Purpose: To present 1 to 6-month follow-up results of laser in situ keratomileusis (LASIK) using multizone presbyopic advanced surface ablation (PASA) with a peripheral near zone.

Methods: LASIK was performed on 28 eyes of 17 patients (10 men and 7 women; mean age 49.8 years with a range of 37 to 62 years).

Whole eye wavefront aberrations in Mexican male subjects.

Purpose: To analyze the characteristics, incidence, and appearance of wavefront aberrations in undilated, normal, unoperated eyes.

Methods: Eighty-eight eyes of 44 healthy male Mexican subjects (mean age 25.32 years, range 18 to 36 yr) were divided into three groups based on uncorrected visual acuity of greater than or equal to 20/20, 20/30, or 20/40.