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. 2016 Jul 29;3:20. doi: 10.1186/s40662-016-0050-x

Table 2.

Pre-operative and post-operative (1 day, 1 week, 1 month, 3 months, and 6 months) central corneal thickness measurements in the two groups of study

Pre-Op 1 day 1 week 1 month 3 months 6 months
Group-A Phaco
Average 534.89 579.45 551.96 541.05 537.51 536.72
St Dev 36.68 54.23 43.2 38.54 37.22 37.14
Min 445 480 469 463 450 448
Max 647 720 714 692 654 650
Difference to baseline - 44.56 17.07 6.16 2.62 1.83
Group-B Femto second
Average 535.71 601.68 553.89 539.54 538.21 537.92
St Dev 42.49 69.22 57.98 51.15 49.43 46.6
Min 465 520 474 470 465 462
Max 654 766 712 654 654 654
Difference to baseline - 65.97 18.18 3.82 2.5 2.21
p-value (paired test group-A to group-B) 0.883 0.045 0.815 0.735 0.855 0.882

Δ indicates difference to pre-operative baseline. All units are reported in μm. P-values correspond to comparison between groups for the same visit measurements