ESCRS - PP11.13 - One-Year Results Using The Customized Therapeutic Trans Prk Protocol Of The Ivis Excimer Laser Refractive Suite

One-Year Results Using The Customized Therapeutic Trans Prk Protocol Of The Ivis Excimer Laser Refractive Suite

Published 2022 - 40th Congress of the ESCRS

Reference: PP11.13 | Type: Free paper | DOI: 10.82333/bqy8-r583

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

1Attiko Ophthalmologiko Eye Center,Athens,Greece;BioMedical Sciences - Optics & Optometry,University of West Attica (UNIWA),Egaleo Athens,Greece, 2Attiko Ophthalmologiko Eye Center,Athens,Greece, 3BioMedical Sciences - Optics & Optometry,University of West Attica (UNIWA),Egaleo Athens,Greece

Purpose

To analyze the effectiveness and safety of the customized Therapeutic-trans-PRK protocol of the iVis Laser Suite

Setting

Attiko Ophthalmologiko Eye Center, Athens, Greece

Methods

Twenty-two (22) eyes underwent the Therapeutic-trans-PRK (T-t-PRK) procedure. The customization of each treatment is designed based on preoperative measurements from the Precisio® tomography and the pMetrics® pupillometry. Therapeutic treatments involved 13 eyes with keratoconus, 2 cases with corneal opacities, 5 cases with irregular astigmatism and 2 eyes with thin corneas. The following parametres were analyzed: uncorrected and BCVA, refractive results, corneal tomography and epithelial maps, corneal morphological irregularities (CMIs), rate of epithelialization and patient’s comfort. All eyes had at least 12 months of follow-up.

Results

All eyes showed considerable improvement (preop vs. postop values) in every studied parameter. Unaided visual acuity (0.28 vs. 0.8), BCVA (0.78 vs. 0.9), Corneal Morphological Irregularities (CMI) 32 vs. 12.2. The Anterior Corneal Astigmatism was reduced (-2.21 vs.-1.75), as well as the Anterior Irregularity CMIa Index (30.2 vs 16.5). The technique, due to smooth tissue ablation with the 1000 Hz excimer laser, significantly accelerates the healing of the cornea (average 4.9 days), with tolerable levels of pain for the patient.

Conclusions

The customized Therapeutic-trans-PRK protocol of the iVis platform is an excellent, operator independent choice for the correction of corneal abnormalities and corneal opacities. The iVis platform, using Ray Tracing technology, provides optimal security, excellent correction accuracy and tissue saving capabilities through the individualized ideal pupil® software.