Table 3. Mean test scores (SD) and effect sizes for group differences (absolute values) for patients that completed follow-up (n = 43).

Questionnaires	T-pre	T-post	FU	Effect size T-pre vs. FU	Effect size T-post vs. FU
NEI-VFQ-25 total score	63.62 (13.78)	70.83 (11.30)	75.55 (12.25) a,b,c	0.98	0.53
IMQ total score	2.56 (0.70)	2.08 (0.52)	2.12 (0.54) a,b	0.68	0.08
CVD total score	0.47 (0.16)	0.36 (0.13)	0.37 (0.14) a,b	0.65	0.09

^(a) significant overall effect of test assessment (GLM Repeated Measures, P-value < .001).

^(b) significant difference between T-pre and FU (simple contrast, P-value < .001)

^(c) significant difference between T-post and FU (simple contrast, P-value = .001)