Table 2

Average (95% bootstrap confidence interval) simulated 1-year visual outcomes under each of the four modelled conditions

No treatment delay3-month delay6-month delay9-month delay
Mean 1-year VA57.8 letters
(56.6–59.1)
52.7 letters
(51.4–54.1)
(−5.1 letters
; p<0.001)
50.3 letters
(48.8–51.6)
(−7.5 letters; p<0.001)
48.6 letters
(47.2–49.9)
(−9.2 letters; p<0.001)
% severe sight impairment
(≤35 letters)
15.5
(13.2–17.9)
23.3
(20.7–25.9)
(+7.8; p<0.001)
27.6
(24.7–30.6)
(+12.1;
p<0.001)
30.8
(28.0–33.7)
(+15.3;
p<0.001)
% sight impairment
(≤55 letters)
39.4
(36.1–42.5)
50.0
(46.9–53.1)
(+10.6;
p<0.001)
54.8
(51.5–58.2)
(+15.4;
p<0.001)
57.9
(54.7–61.1)
(+18.5;
p<0.001)
% driving vision
(≥70 letters)
35.1
(32.1–38.1)
26.4
(23.8–29.2)
(−8.7;
p<0.001)
23.1
(20.6–25.7)
(−12.0;
p<0.001)
21.3
(18.7–23.9)
(−13.8;
p<0.001)
  • Comparisons with the no treatment delay model are provided in italics.

  • VA, visual acuity.