One-Year Results of Photorefractive Keratectomy for Myopia and Compound Myopic Astigmatism with 210 nm Wavelength All Solid-State Laser for Refractive Surgery

• Published in: Journal of clinical medicine Vol. 12; no. 13; p. 4311
• Main Authors: Roszkowska, Anna M., Tumminello, Giuseppe, Licitra, Carmelo, Severo, Alice A., Inferrera, Leandro, Camellin, Umberto, Schiano-Lomoriello, Domenico, Aragona, Pasquale
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 27.06.2023; MDPI
• Subjects: Ablation; Astigmatism; Care and treatment; Clinical medicine; Contact lenses; Cornea; Diagnosis; Evaluation; Eye surgery; Hydration; Lasers; Myopia; Patient outcomes; Patients; Photorefractive keratectomy; Visual acuity; Italy; Germany; refractive surgery; solid-state laser; 210 nm wavelength; photorefractive keratectomy
• ISSN: 2077-0383; 2077-0383
• DOI: 10.3390/jcm12134311

Background: To examine the 12-month clinical and refractive outcomes of PRK performed with a UV all-solid-state laser. Methods: The study included healthy patients with myopia and/or compound myopic astigmatism enrolled for refractive surgery and treated with PRK using a 210 nm wavelength, 2 kHz repetition rate, UV all-solid-state laser (LaserSoft, Katana Technologies GmbH, Kleinmachnow, Germany). All subjects were examined at baseline and after 1, 3, 6, and 12 months after the treatment with a slit lamp, refraction, visual acuity assessment (logMAR chart), tonometry, ophthalmoscopy, and corneal tomography with a Scheimpflug camera. The outcome measures considered were uncorrected (UDVA) and corrected (CDVA) distance visual acuities, refraction, central corneal thickness, and transparency. The efficacy, safety, predictability, and stability were determined. Results: The study included 34 eyes of 19 patients. The mean UDVA changed from 1.20 ± 0.43 to −0.05 ± 0.10 logMAR at 12 months, and the mean CDVA changed from −0.03 ± 0.06 to −0.06 ± 0.09 logMAR, respectively. The mean spherical equivalent (SE) changed from −4.90 ± 2.12 D to −0.01 ± 0.40 D and was within ±0.50 D of the intended correction in 91% of eyes and within ±1.00 D in 97% of eyes at 12 months. No eyes lost lines of visual acuity, and 64% of eyes gained one or more lines. Conclusions: PRK with the 210 nm wavelength, 2 kHz repetition rate, all-solid-state laser LaserSoft system proved to have good visual, refractive, and clinical outcomes after the follow-up at 12 months. The emerging gas-free, solid-state technology might be considered a valid alternative for the gas operating lasers for corneal refractive surgery.