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Refractive outcome of wavefront-guided laser in situ keratomileusis and wavefront-guided photorefractive keratectomy in high pre-existing higher order aberration

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Session Details

Session Title: Photoablation Outcomes I

Session Date/Time: Monday 07/09/2015 | 16:30-18:30

Paper Time: 17:39

Venue: Room 17

First Author: : Y.Goel INDIA

Co Author(s): :    R. Arora   J. Goyal   G. Goyal   K. Jaisingh           

Abstract Details


To compare visual outcome and higher order aberrations (HOA) between wavefront-guided LASIK (WF-LASIK) and wavefront guided PRK (WF-PRK) in patients with high preoperative HOA.


Randomized prospective interventional study. Conducted at Guru Nanak Eye Centre, Maulana,Azad Medical College, Delhi, India.


80 myopic eyes with preoperative HOA>0.35μm underwent WF-LASIK (group A) or WF-PRK (group B) on Zyoptix platform over 2 years (40 eyes each). Patients followed up for 1 year.


At 1 year mean uncorrected visual acuity (logMAR) in group A was −0.01±0.04 and group B was 0.00±0.07 (P=0.23). HOA RMS (6mm pupil) in group A was 0.61±0.24m and group B was 0.55±0.25m. The increase was statistically significant in both the groups (P<0.05). Both the groups showed similar efficacy, predictability and safety.


WF-LASIK and WF-PRK have similar efficacy, safety and predictability, though WF-PRK induces less HOA.

Financial Interest:


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