Transepithelial Photorefractive Keratectomy Procedure For The Correction Of Mixed Astigmatism.

Published 2022 - 40th Congress of the ESCRS

Reference: PP09.06 | Type: ESCRS 2022 - Posters | DOI: 10.82333/hggj-t214

Authors: Tijana Petrovic* ¹ , Vladimir Suvajac ¹ , Jovana Radosevic ¹ , Vesna Virijevic ¹ , Gordana Suvajac ¹

¹Private Eye Clinic Profesional,Belgrade,Serbia

Purpose

For most refractive surgeons common way to correct mixed astigmatism, due to its efficiency and safety is LASIK procedure. For many years surface photablation procedures like PRK, trans PRK and LASEK were considered less effective, less predictable and less safe when it comes to correction high and mixed astigmatism. Development of more advanced trans PRK procedure such as SmartSurfACE procedure on Schwind Amaris platform, preoperative OCT epithelial mapping and use of mitomycin, today’s trans PRK procedures have become more predictable and efficient. The goal of this paper is to present results of SmartSurfACE trans PRK procedure for correction mixed astigmatism in patients when LASIK was contraindicated.

Setting

Private Eye Clinic "Profesional“, Belgrade, Serbia

Methods

In this retrospective study we treated 25 eyes of 15 patients, by SmartSurfACE trans PRK. All treatmens were performed whit the SCHWIND Amaris 1050 platform. Preoperativ spherical equivalent was - 0.27 +/- 0.33 SD (range -1,025 to 0.25), and manifest astigmatism -2.53 +/- 0.69 SD (range from - 3.75 to - 1.50 ).

Epithelial component of photoablation was determineted on case by case basis by OCT epithelial mapping. Optical zones were in the range of 7,0 mm to 7,6 mm. Treatment followed by 0.02% mitomycin -C apliccation.

Results

At 3 months after surgery 95,45% patient had UDVA 20/25 and better; 86,36% patients had UDVA 20/20 compared to 68,18% of patients which preoperative CDVA was 20/20. Regarding safety, no eyes lost lines of CDVA , while 18.8 % of eyes gained one line of CDVA. 95.46% eyes post op has SE range +/- 0.50 D, while 100% eyes has SE range +/- 1.0 D. 90.9% patient has manifest astigmatism +/- 0.5 Dcyl , and no eyes had manifest astigmatism over 0.75 Dcyl. There were no postoperative complications.

Conclusions

SmartSurfACE transepithelial PRK procedures were in our experience safe, predictable and successuful in treatment of mixed astigmatism and valid altenative to LASIK.