Posters

Incidence of posterior vitreous detachment after Femtosecond LASIK compared to microkeratome LASIK

Poster Details

First Author: M.Hamed EGYPT

Co Author(s):    M. El-Agha   N. Khalil           

Abstract Details

Purpose:

To compare the incidence of posterior vitreous detachment (PVD) after femtosecond LASIK and microkeratome LASIK.

Setting:

Rowad Correction Centre, Egypt (Private center affiliated to Cairo university)

Methods:

Prospective, controlled, non-randomized comparative study was performed at a single laser centre. Eligible patients choose between femtosecond LASIK and microkeratome LASIK after appropriate counseling. B-scan ultrasonography was done before surgery by a single operator. Patients with pre-existing PVD ( partial or complete) were excluded. Axial length was also recorded. All surgery was performed by a single surgeon. During surgery, suction time was measured. Ultrasonography was repeated one month after surgery by the same operator to detect PVD.

Results:

Ten patients (20 eyes, group M) underwent LASIK using Moria M-2 microkeratome, and Ten patients (20 eyes, group F) underwent femtosecond LASIK with IFS-150. In groups M and F respectively the proportion of females was 80% and 70%, and the mean age was 24.7 years ± 4 and 25.7 years ± 3.3 years, the mean axial length was 24.2 ± 1.2 and 23.8 ± 1.2 mm, and the mean suction time was 18 ± 2 and 63 ± 4 seconds. After surgery PVD was detected in 4 eyes (20%) in group M and 17 eyes (85%) in group F (p=0.000044).

Conclusions:

The incidence of PVD (partial or complete) one month after femtosecond LASIK with Intralase FS-150 was higher than after microkeratome LASIK with Moria M-2. This may be due to longer duration of suction during femtosecond LASIK, even though the suction pressure is lower during the femtosecond procedure. FINANCIAL DISCLOUSRE: NONE