Table 4.

Changes in central retinal sensitivity between the two study groups

	Active treatment group (n = 27)	Control group (n = 26)	P-value
Retinal sensitivity at the baseline (dB)
Mean ± SD	15.5 ± 0.6	15.4 ± 0.5	0.830
Range	14.3–15.9	14.5–15.8
2-week follow-up visit
Mean ± SD	15.7 ± 0.7	15.5 ± 0.8	0.645
Range	14.3–16.9	14.2–16.9
4-week follow-up visit
Mean ± SD	15.9 ± 0.5	15.7 ± 0.6	0.328
Range	14.9–17.0	14.5–16.9
8-week follow-up visit
Mean ± SD	16.3 ± 0.6	15.8 ± 0.8	0.336
Range	15.0–17.4	14.5–17.3
12-week follow-up visit
Mean ± SD	18.3 ± 1.1	16.1 ± 0.7	0.042
Range	16.3–19.0	15.1–17.8

Notes: Within-group comparison using Student’s t-test. P-values <0.05 were considered to be statistically significant.

Abbreviations: n, number; SD, standard deviation.