Table 2.

Comparison of changes in Keratometric values in the 1st, 3rd, 6th, and 12th months post-operatively compared to the baseline

Variables	Group 1 (HPMC)		Group 2 (Vitamin E-TPGS)		p
	Mean±SD	Median (Min-Max)	Mean±SD	Median (Min-Max)
Change in Kmax
1 month	1.10±2.01	0.86 (-1.88-7.52)	1.26±1.83	1.48 (-3.15-4.8)	0.757
3 months	−0.03±1.52	−0.24 (−2.58–3.08)	1.18±1.62	1.15 (−1.54–5.75)	0.010
6 months	0.02±1.42	−0.19 (−2.48–2.89)	−0.33±1.99	−0.03 (−5.5–3.50)	0.492
12 months	−0.45±1.33	−0.59 (−3.83–2.26)	−0.44±1.53	−0.52 (−3.42–2.67)	0.973
Change in K1
1 month	0.39±1.01	0.22 (−1.17–4.44)	0.41±0.68	0.45 (−0.91–2.57)	0.368
3 months	−0.26±0.48	−0.24 (−1.12–0.57)	0.18±0.59	0.29 (−1.04–2.20)	0.006
6 months	−0.21±0.62	−0.26 (−1.31–1.96)	−0.38±0.55	−0.41 (−1.68–0.33)	0.717
12 months	−0.61±0.52	−0.46 (−1.31–1.96)	0.60±0.91	−0.62 (−3.61–1.13)	0.831
Change in K2
1 month	0.34±0.89	0.48 (−2.06–2.06)	0.79±0.91	0.77 (−0.71–4.12)	0.064
3 months	−0.20±0.62	−0.16 (−1.20–1.44)	0.22±0.78	0.18 (−1.26–3.07)	0.022
6 months	−0.26±0.71	−0.22 (−1.48–1.82)	−0.29±0.67	−0.21 (−2.02–0.65)	0.841
12 months	−0.58±0.82	−0.57 (−2.96–0.75)	−0.50±1.01	−0.48 (−3.47–1.96)	0.708

SD: Standard deviation, HPMC: Hydroxypropyl methylcellulose, Vitamin E-TPGS: D alphatocopheryl polyethylene-glycol 1000 succinate, BCVA: Best corrected visual acuity, Kmax: Maximum keratometry, K1: Flat keratometry, K2: Steep keratometry, TCT: Thinnest corneal thickness, ACT: Apical corneal thickness, CCT: Central corneal thickness.