Table 4

 Comparisons between preoperative and postoperative values of cataract operation

PreoperativePostoperativeDifference between preoperative and postoperative valuesp Value
Mean IOP (mm Hg) (SD)14.9 (3.7)14.3 (3.5)−0.5 (3.7)0.58
Mean axial length (mm) (SD)23.97 (1.11)23.90 (1.11)−0.08 (0.04)<0.00001
Mean keratometry (dioptres) (SD)43.65 (1.43)43.77 (1.48)0.12 (0.28)0.13
Mean refractive error (spherical equivalent in dioptres) (SD)−0.28 (0.24)0.02 (1.00)0.29 (0.96)0.26