Session Title: Refractive II
Session Date/Time: Saturday 04/02/2012 | 08:30-11:00
Paper Time: 08:59
Venue: Grand Ballroom
First Author: : A.Uceda Montanes SPAIN
Co Author(s): :
Purpose:
The purpose of this study is to evaluate the efficacy, safety, and predictability of an enhanced laser vision correction surgery on patients with myopic astigmatism above two diopters of cylinder, scheduled to undergo primary LASIK with the Advanced CustomVue iLASIK from Abbot Medical Optics, Santa Ana , California. Additionally a comparative, prospective study with a matched sample in refraction (MRSE) , age, sex etc. was carried out aimed to determine if Custom Vue ilasik yields better results in terms of UCVA, BSCVA and patients satisfaction when compared to standard refractive ablations with VISX S4 IR and femtosecond laser made flaps.
Setting:
Vissum Ophthalmology Private Clinic.
Seville, Spain
Methods:
Sixty eyes (30 patients) with myopic astigmatism ( sphere up to -6.00 dp and cylinder ranging from -2 to -5.00 dp) were distributed into 2 groups in a prospective, randomized study. Both groups were matched in terms of age , sex, spherical equivalent, pupilometry and keratometry. One group was treated with wavefront guided ablations using Custom Vue ( Wavesacn aberrometry and VISX S4 IR) system by AMO. The second group was treated with the standard refractive procedure provided by VISX S4 IR . In all patients femtosecond laser was used to create corneal flaps ( IL FS 60 by AMO). Postoperative UCVA, BSCVA efficacy and safety indexes were calculated for both groups at three months after surgery. All patients filled up a satisfaction survey at the end of the follow up period. RESULTS Safety and efficacy indexes for the Custom Vue group were 1.1 and 1.02 respectively . For the standard group safety index was 1.01 and efficacy was 1.01. The percentage of patients that achieved 20/16 of postoperative UCVA was 28 % in the CV group compared to 12 % in the standard group. For the BSCVA after three months , 35 % achieved 20/16 in the CV group versus 29% in the standard group. No patient lost any line of BSCVA. Satisfaction was higher in the CV group, with 95 % stating that his or her vision after surgery was significantly better or better compared to their corrected vision before surgery.
Conclusions:
Both Groups were proved to be a safe and predictable treatment for correcting myopic astigmatism with high cylinder. CV group achieved higher percentages of patients with both UCVA and BSCVA of 20/16 postoperatively compared to standard treatment group. We conclude that wavefront based refractions and features such iris registration lead to a better refractive results for these patients.
Financial Disclosure:
... research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented
