Single versus double femtosecond laser pass for incomplete laser in situ keratomileusis flap in contralateral eyes: visual and optical outcomes.

Abstract:

PURPOSE:To evaluate visual acuity, refractive outcomes, and anterior corneal higher-order aberrations (HOAs) after myopic laser in situ keratomileusis (LASIK) with uneventful single femtosecond laser pass versus double pass performed for intraoperative suction loss. SETTING:Private refractive surgery center, Valencia, Spain. DESIGN:Cohort study. METHODS:After the LASIK flap was created with a single pass of an Intralase femtosecond laser in 1 eye and a double pass in the fellow eye, the ablation was performed with a Visx S2 laser. At 12 months, the refraction, uncorrected (UDVA) and corrected (CDVA) distance visual acuities, and anterior corneal HOAs were measured with 4.0 mm and 6.0 mm pupils. RESULTS:The study enrolled 42 eyes (21 patients). Twelve months postoperatively, there were no statistically significant differences in any parameter studied including residual spherical equivalent (mean -0.05 diopter [D] ± 0.25 [SD] single pass; -0.03 ± 0.19 D double pass; P=.75), UDVA (mean 0.008 ± 0.057 logMAR single pass; 0.011 ± 0.046 logMAR double pass; P=.89), CDVA (mean -0.010 ± 0.040 logMAR single pass; -0.007 ± 0.037 logMAR double pass; P=.74), or anterior corneal HOAs. No eye lost 1 line of CDVA. CONCLUSIONS:Visual acuity, refractive outcomes, and anterior corneal HOAs were comparable between eyes after uneventful femtosecond laser single pass or double pass after suction loss affecting the pupillary area. A new femtosecond laser pass performed immediately after incomplete flap due to intraoperative suction loss provided good visual and optical outcomes.

authors

Muñoz G,Albarrán-Diego C,Ferrer-Blasco T,Javaloy J,García-Lázaro S

doi

10.1016/j.jcrs.2011.06.027

subject

Has Abstract

pub_date

2012-01-01 00:00:00

pages

8-15

issue

1

eissn

0886-3350

issn

1873-4502

pii

S0886-3350(11)01386-1

journal_volume

38

pub_type

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