RT Journal Article
T1 Corneal densitometry after photorefractive keratectomy, laser- assisted in situ keratomileusis, and small-incision lenticule extraction
A1 Poyales Galán, Francisco
A1 Garzón Jiménez, Nuria
A1 Mendicute, Javier
A1 Illarramendi, Igor
A1 Caro, Pedro
A1 Jáñez, Oscar
A1 Argüeso Díaz-Trechuelo, Francisco
A1 López, Alfredo
AB Purpose: The aim of this study was to gain greater insight into the corneal densitometry changes  occurring as a result of refractive surgery and to compare these changes across three widely used  surgical techniques, namely, photorefractive keratectomy (PRK), laser-assisted in situ  keratomileusis with a femtosecond laser (LASIK-FS), or ReLEx small-incision lenticule extraction  (ReLEx SMILE). Patients and methods: Three hundred and thirty-six patients (184 male and 152 female patients)  participated in this study. They were split into three groups according to the refractive surgery  technique they had undergone: LASIK-FS (74 patients), PRK (153 patients), and ReLEx SMILE (109  patients). All participants underwent an exhaustive eye examination both before and after surgery.  Pre- and postoperative corneal densitometry was measured using an Oculus Pentacam system.Results: The mean postoperative total corneal densitometry values were 16.53 ± 1.94 for the LASIK- FS group, 15.53 ± 1.65 for PRK, and 16.10 ± 1.54 for ReLEx SMILE. When corneal densitometry was  analyzed for specific corneal areas, the values corresponding to the 0–2, 2–6, and 6–10 mm annuli  were similar across the three surgical techniques. The only region in which differences were found  was the peripheral area (Po0.05), but these variations across techniques were not statistically  significant.Conclusions: Corneal densitometry can be used as an objective metric to assess corneal response to  refractive surgery, and to monitor patients over time. Corneal densitometry was not negatively  affected by any of the refractive surgical procedures under evaluation.
PB Nature Publishing Group
SN 0950-222X
YR 2017
FD 2017-04
LK https://hdl.handle.net/20.500.14352/17835
UL https://hdl.handle.net/20.500.14352/17835
LA eng
NO Received: 29 September 2016 ; Accepted in revised form: 27 April 2017
DS Docta Complutense
RD 9 abr 2025