Clinical Outcomes of Small Incision Lenticule Extraction with Accelerated Cross-Linking (ReLEx SMILE Xtra) in Patients with Thin Corneas and Borderline Topography

Table 4

ECD, higher order aberrations (HOA) at 6 mm pupil size and Schirmer 1 scores after SMILE Xtra ( eyes).

(Mean ± SD)	Preop.	12 months	value
ECD (cells/mm^2)	2695.13 ± 222.8	2682.5 ± 231.8	0.22
HOA (RMS, μ)	0.172 ± 0.08	0.189 ± 0.09	0.06
Schirmer I (mm)	28.2 ± 2.1	28.5 ± 1.3	0.08

ECD: endothelial cell density, HOA: higher order aberrations, RMS: Root Mean Square, and 12 months versus preoperative (paired -test).