Table 3.

Binocular function before and 6 weeks after graded partial tenotomy of vertical rectus muscles for treatment of hypertropia

Patient no.	Preop stereoacuity (seconds of arc)	Postop stereoacuity (seconds of arc)	Stereoacuity improvement	Preop worth (near, far*)	Postop worth (near, far*)	Worth improvement
1	140	100	Yes	5,4	5,4	Same
2	0	140	Yes	4,4	5,5	No
3	800	100	Yes	5,5	4,4	Yes
4	0	100	Yes	2,2	4,4	Yes
5	100	N/A	N/A	4,4	N/A	N/A
6	800	0	No	3,4	4,4	Yes
7	N/A	N/A	N/A	N/A	N/A	N/A
8	N/A	3000	N/A	N/A	5,5	N/A
8†	N/A	0	N/A	N/A	5,5	N/A
9	60	400	No	4,4	4,4	Same
10	400	40	Yes	4,4	4,4	Same
11	50	60	No	4,2	4,4	Yes
12	80	100	No	4,4	4,4	Same
13	80	50	Yes	5,4	5,5	No
14	140	100	Yes	4,4	4,4	Same
15	3000	3000	Same	4,4	4,4	Same
16	140	N/A	N/A	3,3	N/A	N/A
17	200	50	Yes	3,5	4,4	Yes
18	N/A	N/A	N/A	N/A	N/A	N/A
19	400	3000	No	4,4	3,4	No
20	3000	400	Yes	5,3	4,4	Yes
21	N/A	N/A	N/A	N/A	5,4	N/A
22	N/A	0	N/A	3,5	4,4	Yes
23	800	100	Yes	3,4	5,5	No
23†	800	0	No	5,5	5,5	Same
24	80	140	No	4,4	4,4	Same

N/A, not assessed (patient unable to return for 6-week visit); Postop, postoperative; Preop, preoperative.

^*Near = 1/3 meter, far = 6 meter.

^†Second procedure.