Table 4

 Follow up data of the study group patients and whole control group

Change in visual acuityStudy groupControl groupp Value*
*Statistical significance of difference between study group and control group.
NS, statistically not significant. Results presented as mean (standard deviation).
1 week after baseline
    Number575
    LogMar units−0.09 (0.18)−0.02 (0.04)0.36 (NS)
    Snellen lines0.9 (1.9)0.2 (0.4)0.39 (NS)
    Snellen acuity0.04 (0.10)0.01 (0.02)0.51 (NS)
1 month after baseline
    Number6419
    LogMar units−0.15 (0.28)−0.01 (0.13)0.006
    Snellen lines1.3 (2.6)0.1 (1.3)0.01
    Snellen acuity0.07 (0.12)−0.01 (0.07)0.01
2 months after baseline
    Number5224
    LogMar units−0.16 (0.26)0.00 (0.25)0.009
    Snellen lines1.5 (2.6)0.2 (1.7)0.027
    Snellen acuity0.07 (0.12)0.02 (0.08)0.10 (NS)
3 months after baseline
    Number5125
    LogMar units−0.19 (0.26)0.09 (0.25)<0.001
    Snellen lines1.8 (2.2)−0.7 (1.9)<0.001
    Snellen acuity0.07 (0.09)−0.04 (0.10)<0.001
4 months after baseline
    Number3719
    LogMar units−0.16 (0.35)0.02 (0.17)0.004
    Snellen lines1.8 (3.1)−0.2 (1.7)0.006
    Snellen acuity0.10 (0.15)−0.01 (0.07)0.005
5 months after baseline
    Number2914
    LogMar units−0.10 (0.25)0.13 (0.20)0.001
    Snellen lines1.0 (2.5)−1.4 (2.0)0.002
    Snellen acuity0.04 (0.10)−0.08 (0.12)0.001
6 months after baseline
    Number2510
    LogMar units−0.06 (0.21)0.15 (0.15)0.003
    Snellen lines0.5 (2.1)−1.5 (1.6)0.004
    Snellen acuity0.03 (0.08)−0.11 (0.13)0.001
7 months after baseline
    Number1816
    LogMar units−0.13 (0.28)0.02 (0.17)0.037
    Snellen lines1.5 (2.4)0.2 (1.6)0.029
    Snellen acuity0.07 (0.09)−0.02 (0.07)0.011
8 months after baseline
    Number2013
    LogMar units−0.09 (0.33)0.03 (0.14)0.15 (NS)
    Snellen lines1.0 (3.3)−0.2 (1.5)0.18 (NS)
    Snellen acuity0.04 (0.16)−0.02 (0.06)0.17 (NS)