From: Topical citicoline and vitamin B12 versus placebo in the treatment of diabetes-related corneal nerve damage: a randomized double-blind controlled trial
Cit-B12
Placebo
P
Baseline
28 ± 18
41 ± 16
0.07
Month 4
40 ± 16*
42 ± 16
0.79
Month 8
49 ± 10*
50 ± 11
0.85
Month 12
50 ± 12*
48 ± 12
0.70
Month 18
52 ± 10*
50 ± 13
0.63