ESCRS - PP06.13 - Automated Assessment Of The Visual Quality Stabilization After Laser Refractive Surgery

Automated Assessment Of The Visual Quality Stabilization After Laser Refractive Surgery

Published 2022 - 40th Congress of the ESCRS

Reference: PP06.13 | Type: Free paper | DOI: 10.82333/d0f5-cj37

Authors: David Smadja* 1 , Avi Shoshani 2 , Yshai Weill 3

1Ophthalmology,Hadassah Medical Center,Jerusalem,Israel, 2Ophthalmology,Ein Tal Hadassah,Tel Aviv,Israel, 3Ophthalmology,Toronto University,Toronto,Canada

Purpose

To analyze the early postoperative impact of laser vision correction procedures on the stability of the visual function using a double-pass aberrometer device.  

Setting

Ophthalmology department

Refractive Surgery Unit, Ein Tal Hadassah Laser Institute

Hadassah Medical Center

Methods

Retrospective and comparative study including 100 eyes of 100 patients analyzed preoperatively and 3 months after PRK (50 eyes) and LASIK (50 eyes). The visual function stability analysis was performed using a double-pass aberrometry (HD Analyzer, Visiometrics S.L, Terrassa, Spain) and included vision break-up time (VBUT), objective scattering index (OSI), modulation transfer function (MTF), and Strehl Ratio (SR). Results were compared between PRK and LASIK surgery.

Results

No statistical significant difference was found at 3 months postoperatively in VBUT, with mean changes of 0.38± 1.11 (p = 0.24) and 0.33± 2.95 (p = 0.61), respectively in LASIK and PRK groups. No statistically significant difference in VBUT was observed at baseline (p=0.85) and at 3 months postoperative (p=0.13) between LASIK and PRK. Postoperative optical quality metric MTF, SR and OSI, remained unchanged at the 3 months follow up in both groups as compared to baseline values (p=0.11, p=0.23, p=0.39 respectively).

Conclusions

Both laser vision correction procedures, LASIK and PRK, were not associated with an early decrease in retinal point spread function stability nor degradation of optical quality parameters..