Clinical Outcomes of Aberration-Free All Surface Laser Ablation (ASLA) vs. Aberration-Free ASLA Assisted by Smart Pulse Technology in High Myopia: A One-Year Follow-Up Study

Table 1

Baseline preoperative values^a.

Baseline preoperative values	SPT group	Non-SPT group
Number of eyes	53	85
Mean age (years)	26.25 ± 5.64	24.62 ± 4.91	0.082
Mean preoperative logMAR UDVA	1.294 ± 0.245	1.280 ± 0.269	0.725
Mean preoperative logMAR CDVA	−0.007 ± 0.017	−0.024 ± 0.034	0.02^b
Mean preoperative refractive errors (D)
Sphere	−7.60 ± 1.31	−7.60 ± 1.06	0.925
Cylinder	−0.83 ± 0.64	−1.00 ± 0.71	0.206
Spherical equivalent	−8.02 ± 1.32	−8.10 ± 1.05	0.507
Optical zone diameter (mm)	6.12 ± 0.26	6.18 ± 0.26	0.494
Treatment diameter (mm)	7.91 ± 0.33	8.09 ± 0.33	0.001^b
Ablation depth (μm)	160.85 ± 13.05	171.49 ± 11.25	＜0.001^b
Residual stromal bed thickness (μm)	345.83 ± 21.44	330.11 ± 18.71	＜0.001^b

SPT = smart pulse technology; UDVA = uncorrected distance visual acuity; CDVA = corrected distance visual acuity. ^aValues are presented as mean ± standard deviation. ^bSignificant difference between the SPT and non-SPT groups (Student’s t-test/Mann–Whitney U-test).