Table 8

Comparative visual acuity before and after treatment

Preop vision	Post-treatment vision												Total
Preop vision	Uncooperative		<1/60		1/60 to 3/60		20/200 to 20/120		20/80 to 20/60		20/40 to 20/20		Total
Uncooperative	7	1.01	0	0	0	0	0	0	1	0.14	2	0.29	10	1.45
<1/60	10	1.45	164	23.87	53	7.71	54	7.86	110	16.01	191	27.80	582	84.71
1/60 to 3/60	0	0	4	0.58	3	0.43	8	1.16	21	3.05	10	1.45	46	6.69
6/60 to 6/36	0	0	0	0	0	0	1	0.14	7	1.01	12	1.74	20	2.91
6/24 to 6/18	0	0	3	0.43	0	0	1	0.14	6	0.87	7	1.01	17	2.47
6/12 to 6/6	0	0	0	0	0	0	0	0	0	0	1	0.14	1	0.14
Total	17	2.47	171	24.89	55	8.00	64	9.31	145	21.10	223	32.45	675	98.5

χ² test, p=0.000.