Official ESCRS | European Society of Cataract & Refractive Surgeons
Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance

10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits


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The femtosecond laser intrastromal astigmatic incision vs the femtosecond laser transepithelial astigmatic incision: which is better?

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Session Details

Session Title: LASIK

Session Date/Time: Monday 12/09/2016 | 08:00-10:30

Paper Time: 09:42

Venue: Hall C3

First Author: : H.Tchah SOUTH KOREA

Co Author(s): :    J. Kwag   H. Jeong   C. Moon   J. Yoon   J. Kim   M. Kim     

Abstract Details


To evaluate the result of two different surgical methods of the femtosecond laser-assisted astigmatic keratotomy, intrastromal astigmatic incision versus transepithelial astigmatic incision.


Department of Ophthalmology, University of Ulsan College of Medicine, Asan Medical Center


In group 1, 45 eyes ( average astigmatism 1.28±0.61 D) had intrastromal arcuate incisions concurrently done with femtosecond laser cataract surgery (with Catalys®). Paired incisions were made intrastromally at the middle 60% of corneal thickness at 8mm diameter. In group 2, 36 eyes (average astigmatism 1.40±0.51 D) underwent epithelial-penetrating astigmatic keratotomy (with IntraLase®). Paired symmetrical arcuate keratotomies were made 80% depth at 9 mm diameter according to modified LRI nomogram. At postoperative 1, 6 months, corrected and uncorrected distance visual acuity, manifest refraction, automatic keratometer, and topography and measured change of astigmatism was analyzed in vector analysis method.


Corneal astigmatisms were significantly decreased compared with preoperative data in both groups in all postoperative period. The mean absolute astigmatism decreased significantly from 1.22±0.44 D to 0.71±0.42 D (P < 0.05) in group 1 and 1.40±0.51 D to 0.85±0.40 D (P < 0.05) in group 2. Error ratio and correction ratio by vector analysis were 0.57±0.32 and 0.89±0.40 in group 1, 0.56±0.32, and 0.88±0.47 in group 2 respectively (P=0.25, 0.19).


The astigmatic correction effect of intrastromal astigmatic incision concurrently done with cataract surgery was comparable with transepithelial astigmatic incision after cataract. surgery. And both femtosecond laser-assisted procedures were very safe. More adjustments of nomograms are needed to improve the predictability of the surgical results.

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