Evaluation of the clinical outcomes after LASIK for the correction of myopia using an advanced aberrometer

Session Details

Session Title: Photoablation

Session Date/Time: Tuesday 13/09/2016 | 14:00-16:00

Paper Time: 14:36

Venue: Hall C2

First Author: : C.Sun TAIWAN

Co Author(s): :                        

Abstract Details

Purpose:

Purpose: To evaluate the clinical outcomes of wavefront-guided LASIK for myopia and myopic astigmatism correction using aberrometric data obtained with the iDesign.

Setting:

Refractive surgery center, Chang Gung memorial hospital, Keelung,Taiwan.

Methods:

Methods: A total of 20 eyes from 13 patients with an age ranging from 23 to 50 years were included in the study. All eyes had myopia or myopic astigmatism that underwent wavefront-guided LASIK. The aberrometric data were obtained with the iDesign aberrometer. Corneal flaps were created using the Intralase FS 150 kHz femtosecond laser. Patients were followed at postoperative months 1, 3 and 6. The study’s main outcome measures were uncorrected (UCVA) and corrected distant visual acuity (CDVA) , predictability and safety of refractive correction, dry eye parameters, contrast sensitivity, and wavefront aberrometry.

Results:

Results: After 6 months, the mean LogMAR UCVA improved from 1.76 to -0.03 (p<0.001). Nine (45%) eyes had gained one or more lines of CDVA. Average spherical equivalent refractions were 0.00±0.16 diopters and all eyes were within 0.5 diopters of target refraction. There were no significant differences compared with preoperative measurements in all dry eye parameters tested, which included corneal sensitivity, tear break up time, Schirmer's test, conjunctival and corneal staining scores. Dim light contrast sensitivity improved significantly at high spatial frequency (p=0.007 at 12 cycles/degree and p=0.035 at 18 cycles/degree). The spherical aberrations were significantly decreased as compared with preoperative measurements.

Conclusions:

Conclusions: Wavefront-guided LASIK is a safe and effective surgery to correct myopia and myopic astigmatism. It also decreases postoperative spherical aberrations and improves dim light contrast sensitivty at high spatial frequency.

Financial Disclosure:

NONE