Involvement in RTA Visual acuity in better eye Total
6/5-6/18 6/18-6/60
Yes 17 1 18
No 71 1 72
Total 88 2 90
Involvement in RTA Visual acuity in second eye Total
6/5-6/18 6/18-6/60
Yes 16 2 18
No 66 6 72
Total 82 8 90
Table 4: Cross tabulation of visual acuity and involvement in RTA.