Title: Validating an Aberration-Neutral ablation profile
Abstract: PURPOSE: To validate the preoperative and postoperative corneal wave aberration among
eyes that have undergone femto-LASIK using the Ziemer LDV femtosecond laser system,
the SCHWIND AMARIS Excimer Laser and the Aberration-freeTM profiles implemented
in the SCHWIND Custom Ablation Manager software.
SETTING: Muscat Eye Laser Centre (private practice), Muscat, Sultanate of Oman.
METHODS: A total of 100 LASIK patients were bilaterally evaluated at the six-month
follow-up visit. In all cases standard examinations, pre- and postoperative analysis with
corneal wavefront topography (OPTIKON Scout) were performed. Aberration-freeTM
aspheric treatments were devised using the Custom Ablation Manager software and ablations
were performed by means of the SCHWIND AMARIS flying-spot excimer laser system
(both SCHWIND eye-tech-solutions). In all cases LASIK flaps were created using an
LDV femtosecond laser (Ziemer Group). The Aberration-FreeTM concept was validated in
terms of corneal wavefront aberration.
RESULTS: 28%, 78%, and 100% of the treatments (56, 156, and 200 eyes, respectively)
preserved aberrations within 0.25, 0.50 and 1.00 D RMS, respectively, whereas 72%, 94%,
and 100% of the treatments (144, 188, and 200 eyes, respectively) preserved optical blur
within 0.25, 0.50 and 1.00 D, respectively. All 3rd and 4th order Zernike terms showed significant
multivariate correlation postoperatively to preoperatively and refractive correction.
All 5th and 6th order Zernike terms (except C[5,-3]; C[6,-4]; and C[6,+6]) showed significant
multivariate correlation postoperatively to preoperatively and refractive correction.
Only 7th order Zernike terms C[7,-7]; C[7,+1]; and C[7,+7] showed significant multivariate
correlation postoperatively to preoperatively and refractive correction.
CONCLUSIONS: Aberration-FreeTM treatments with the SCHWIND AMARIS did not
induce clinically significant aberrations, and maintained the corneal optical blur.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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Cited By Count: 1
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