Retrospective Cohort Study
Copyright ©The Author(s) 2024.
World J Exp Med. Jun 20, 2024; 14(2): 95016
Published online Jun 20, 2024. doi: 10.5493/wjem.v14.i2.95016
Table 3 Refractive stability by age distribution
Parameters1-wk post-operative
6-wk post-operative
P value1P value2P value3
Age in yr
Age in yr
< 55
55-65
> 65
< 55
55-65
> 65
Sphere0.3920.451> 0.99
    mean ± SD-0.05 ± 0.40.1 ± 0.40.01 ± 0.4-0.12 ± 0.30.03 ± 0.40.04 ± 0.3
    Median (IQR)0 (0-0)0 (0-0)0 (0-0)0 (-0.5 to 0)0 (0-0)0 (0-0)
    Range-0.75 to 1-0.8 to 1-1.5 to 1-0.75 to 0.75-0.75 to 1.5-0.5 to 1
Cylinder0.7690.4080.717
    mean ± SD-0.6 ± 0.1-0.2 ± 0.7-0.3 ± 0.7-0.5 ± 0.3-0.1 ± 0.6-0.4 ± 0.7
    Median (IQR)-0.5 (-0.75 to -0.5)-0.5 (-0.5 to 0.5)-0.5 (-0.75 to 0.5)-0.5 (-0.5 to 0.5)-0.5 (-0.5 to 0.5)-0.5 (-0.75 to 0.5)
    Range-0.75 to 0.5-3.5 to 1-1.5 to 1.5-1 to 0.5-0.75 to 1.25-1.5 to 1.5
Spherical equivalent0.1730.8940.249
    mean ± SD-0.1 ± 0.4-0.01 ± 0.4-0.1 ± 0.4-0.2 ± 0.3-0.01 ± 0.4-0.1 ± 0.3
    Median (IQR)0 (-0.37 to 0)0 (-0.25 –0.25)0 (-0.25 –0)0 (-0.31– 0)0 (-0.25 –0.25)0 (-0.25 –0)
    Range-0.87 to 1-1.75 to 1-1.5 to 1.37-1 to 0.5-1 to 1.75-1 to 0.87
P value40.3580.287-
P value50.0520.013
P value60.2460.057