Femtosecond thin-flap laser assisted in situ keratomileusis for correction of post-penetrating keratoplasty ametropia: long-term outcome

Autor: Bahram Einollahi, Javad Rezaei, Mohammad-Mehdi Sadoughi, Sepehr Feizi, Neda Einollahi, Amir Reza Veisi, Kiana Hassanpour
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: BMC Ophthalmology, Vol 24, Iss 1, Pp 1-7 (2024)
Druh dokumentu: article
ISSN: 1471-2415
16486021
DOI: 10.1186/s12886-024-03428-3
Popis: Abstract Purpose To evaluate the long-term clinical outcomes of femtosecond thin-flap LASIK (femto-LASIK) for correction of refractive error after penetrating keratoplasty in keratoconus-affected eyes. Setting a private ophthalmology clinic. Design Prospective interventional case series. Methods This prospective interventional case series enrolled 22 eyes of 22 patients who underwent femto-LASIK for the management of post-penetrating keratoplasty ametropia. The refractive error, uncorrected (UDVA), and corrected (CDVA) distance visual acuities and vector analysis were reported in short-term and long-term period after surgery. Results The mean age was 32.7 ± 7.5 years (range, 23 to 47 years) at the surgery time. The average time between PK and femto-LASIK was 42.5 ± 31.7 months. The average follow-up duration after femto-LASIK was 81.2 ± 18.6 months. The mean preoperative UDVA significantly improved from 0.47 ± 0.15 logMAR to 0.35 ± 0.14 logMAR at 12 months (P = 0.048) and 0.4 ± 0.17 at final follow-up exam (P = 0.007). CDVA was 0.22 ± 0.1 at baseline which improved to 0.18 ± 0.15 and 0.15 ± 0.1 logMAR at 12 and 81 months, respectively. (Ps = 0.027, 0.014). The mean cylinder before surgery was − 5.04 ± 1.4D which significantly decreased to -1.5 ± 0.8 D at 12 months postoperatively. (P
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