Table 1 Demographics and baseline characteristics of study participants
Characteristics | Low-energy FLACS (n = 66) | Conventional phacoemulsification (n = 66) | P value |
|---|---|---|---|
Age (years) (mean ± SD) range (min, max) | |||
|  | 65.7 ± 6.3 (53, 79) | 65.5 ± 6.8 (52, 79) | 0.85 |
Gender n (%) | |||
 Female | 43 (65.2%) | 43 (65.2%) | 1.00 |
 Male | 23 (34.8%) | 23 (34.8%) | |
Race n (%) | |||
 Han | 66 (100.0%) | 66 (100.0%) |  |
Nuclear opalescence (grade of cataract) n (%) | |||
 1 | 21 (31.8%) | 21 (31.8%) | 0.79 |
 2 | 36 (54.5%) | 36 (54.5%) | |
 3 | 9 (13.6%) | 8 (12.1%) | |
 4 | 0 (0.0%) | 1 (1.5%) | |
Cortical (grade of cataract) n (%) | |||
 1 | 11 (16.7%) | 9 (13.6%) | 0.76 |
 2 | 36 (54.5%) | 33 (50.0%) | |
 3 | 14 (21.2%) | 16 (24.2%) | |
 4 | 5 (7.6%) | 8 (12.1%) | |
Posterior subcapsular (grade of cataract) n (%) | |||
 0 | 11 (16.7%) | 9 (13.6%) | 0.52 |
 1 | 22 (33.3%) | 20 (30.3%) | |
 2 | 13 (19.7%) | 21 (31.8%) | |
 3 | 14 (21.2%) | 13 (19.7%) | |
 4 | 6 (9.1%) | 3 (4.5%) | |
Axial length (mm) (mean ± SD) range (min, max) | |||
|  | 23.7 ± 1.1 (22.0, 27.8) | 23.5 ± 1.0 (21.2, 26.6) | 0.24 |
Pupil diameter (mm) (mean ± SD) range (min, max) | |||
|  | 2.70 ± 0.56 (1.82, 5.80) | 2.84 ± 1.18 (1.53, 10.90) | 0.39 |
Anterior chamber depth (mm) (mean ± SD) range (min, max) | |||
|  | 2.71 ± 0.37 (1.95, 3.73) | 2.71 ± 0.39 (1.72, 3.64) | 1.00 |
Anterior mean corneal power (diopters) (mean ± SD) range (min, max) | |||
|  | 43.8 ± 1.7 (38.8, 47.7) | 44.3 ± 1.6 (40.8, 48.7) | 0.08 |
Endothelial cell density (cells/mm2) (mean ± SD) range (min, max) | |||
|  | 2647.0 ± 370.2 (1266.0, 3289.0) | 2616.6 ± 340.9 (1773.0, 3472.0) | 0.62 |
Central corneal thickness (µm) (mean ± SD) range (min, max) | |||
|  | 540.6 ± 30.8 (472.0, 608.0) | 534.3 ± 25.3 (464.0, 593.0) | 0.20 |