Aberrometric, Keratometric, and Visual Outcomes After Trans-Epithelial Topography-Guided Phototherapeutic Keratectomy for the Treatment of Irregular Corneas

Overview

Journal Clin Ophthalmol

Publisher Dove Medical Press

Specialty Ophthalmology

Date 2021 Sep 16

PMID 34526763

Citations 1

Authors

Antonio Cano-Ortiz

Pablo Morales

Alvaro Sanchez-Ventosa

Isabel Leiva-Gea

Alberto Membrillo

Vasyl Druchkiv

Timoteo Gonzalez-Cruces

Jose-Maria Sanchez-Gonzalez

Jaime Beltran

Alberto Villarrubia

Affiliations

Soon will be listed here.

Abstract

Purpose: To assess the safety, aberrometric and keratometric changes, and stability of trans-epithelial topography-guided phototherapeutic keratectomy (TE-TG-PTK) with mitomycin C (MMC) using the ALLEGRO Topolyzer platform for the treatment of irregular astigmatism.

Methods: This is a retrospective case series including 57 eyes that underwent TE-TG-PTK + MMC using the ALLEGRO Topolyzer platform for the treatment of irregular astigmatism. CDVA, manifest refraction (MR), keratometry readings, and aberrometry readings were analyzed at 1, 3, 6, and 12 months.

Results: Causes of corneal irregularity included non-infectious leucoma (n=23), infectious leucoma (n=7), adenoviral keratitis (n=20), corneal haze (n=2), post-penetrant keratoplasty (PKP) (n=1), and others (n=4). Overall, 76% of the eyes (n=40) gained lines of vision; patients gained 1, and 2 or more lines of vision in 76%, and 38% of cases, respectively. Only 1 patient (2%) lost 5 lines of vision. Mean preoperative CDVA (LogMAR) was 0.37 ±0.31 and improved to 0.14 ±0.18 (p<0.001) at final follow-up (12 months). CDVA remained unchanged in 10 eyes (21%). No significant changes were observed in mean keratometry (Kmean) and keratometric astigmatism readings. Regarding aberrometry, only changes in coma proved to be significant 6 months after surgery (P<0.01). No intraoperative/postoperative complications were reported.

Conclusion: At final follow-up, significant improvements were observed in CDVA and coma. TE-TG-PTK + MMC proved to be an effective and safe procedure for the treatment of corneal irregular astigmatism due to several causes.

Citing Articles

Intraocular lens power calculation in patients with irregular astigmatism.

Achiron A, Elhaddad O, Leadbetter D, Levinger E, Voytsekhivskyy O, Smith K Graefes Arch Clin Exp Ophthalmol. 2022; 260(12):3889-3895.

PMID: 35776172 DOI: 10.1007/s00417-022-05729-z.

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