Examination and measurements
blurred vision, dryness
INTRAOCULAR PRESSURE
The corrected distance visual acuity (CDVA), mean spherical equivalent (MSE) and intraocular pressure (IOP) were measured before SMILE, at 2, 4 and 24 h, one week after SMILE, and at each follow-up visit thereafter. The CDVA was examined using a standard Landolt visual acuity chart, and the values were converted to the logarithm of the minimal angle resolution (logMAR) of visual acuity for the statistical analysis. The MSE was measured using an open-field autorefractor (Grand Seiko WR-5100 K; RyuSyo Industrial Co., Ltd., Kagawa, Japan), and the IOP was measured using a non-contact tonometer (TX-20; Canon, Tokyo, Japan).The optical quality was measured with the Optical Quality Analysis System II (OQAS; Visiometrics, Terrassa, Spain) using the dual-channel technique [The incidence of subjective symptoms after SMILE was collected from all patients, which included foreign body sensation, eye soreness, eye dryness and blurred vision, at 2, 4 and 24 h and one week after SMILE.