Table 3. Distribution of visual outcome according to etiology.

Etiology	Pre-op	Post-op	P (pre-op vs post-op)
Cataract (n=69)	1.16±0.55	0.85±0.51	<0.001c
Ptosis (n=34)	0.84±0.32	0.53±0.31	<0.001c
Strabismus (n=154)	1.11±0.54	0.79±0.32	<0.001c
Refractory Error (n=1125)	0.67±0.31	0.33±0.13	<0.001c
Total (n=1382)	0.85±0.41	0.55±0.42	<0.001c
P (inter-group)
Cataract vs ptosis	0.013a	0.034a
Cataract vs strabismus	0.452	0.591
Cataract vs refractory error	0.001c	0.001c
Ptosis vs strabismus	0.026a	0.027a
Ptosis vs refractory error	0.045a	0.048a
Strabismus vs refractory error	0.001c	0.001c

SD: Standard deviation. P-value for comparing means by ANOVA with post-hoc Bonferroni's test for multiple group comparisons. P-value for comparing pre-op vs post-op visual outcome by paired t test. ^aP<0.05; ^cP<0.001.

mean±SD (logMAR)