ESCRS - PP09.03 - Our Experience Using The 1000 Hz Excimer Laser Ivis Suite, With The Trans-Prk (Cten) Technique

Our Experience Using The 1000 Hz Excimer Laser Ivis Suite, With The Trans-Prk (Cten) Technique

Published 2022 - 40th Congress of the ESCRS

Reference: PP09.03 | Type: Free paper | DOI: 10.82333/s5g2-rd04

Authors: Charalambos Koulas* 1 , Marianthi Hirides 1 , Aikaterini-Anna Kostoglou 1 , Evangelos Pateras 2 , Constantinos Karabatsas 3

1ATTIKO Ophthalmologiko Eye Center,Athens,Greece, 2Biomedical Sciences-Optics & Optometry,University of West Attica,Athens,Greece, 3Biomedical Sciences-Optics & Optometry,University of West Attica,Athens,Greece;ATTIKO Ophthalmologiko Eye Center,Athens,Greece

Purpose

To analyze the outcomes and safety of the cTen trans-PRK method for the correction of different degrees of ametropias, using the iVis Laser Suite.

Setting

ATTIKO Ophthalmologiko Eye Center, Athens Greece

Methods

Seventy-four (74) eyes underwent Refractive cTen (trans-PRK) procedure for correction of spherical error ranging from +5.25 D to -10.25 D and astigmatism ranging from 0 to -2.75 D. The following surgical outcomes (mean preop vs postop) were studied : UCVA, BCVA, topographic, tomographic and epithelial maps analysis, corneal morphological irregularities (CMIs), epithelialization time, safety and patient´s comfort were analyzed. 

Results

Regardless of the preop amount of ametropia, the mean deviation (+/- 0.25D) from the expected correction was achieved in 80% of the cases by the third postoperative month. All studied parameters continued to show gradual improvement over the first postoperative year. Mean postop UCVA  was 10/10. A statistically significant improvement was observed also in corneal irregularity indices (CMIa and CMIt). The smooth tissue ablation with the iVis 1000Hz excimer laser also accelerates corneal re-epithelization (by an average of 3 days).  Patients reported no significant discomfort.


Conclusions

The refractive platform iVis Suite introduces new patented innovations (Precisio®, pMetrics®, Ray Tracing analysis, epithelial measurements) in the preoperative study of the patients and the planning of the procedure. The trans-PRK procedure appears as a simple, fast and operator-independent method for a refractive result which proves to be equivalent or even better than those obtained with the classic PRK.
The iVis platform opens a new path in refractive surgery, providing optimal safety and correction accuracy.