Table 2. Annual mean visual outcomes of the KCH cohort compared with the DRCRN laser group outcomes12.
| Changes in VA | KCH first year | DRCRN first year | KCH second year | DRCRN second year | KCH third year | DRCRN third year | KCH fourth year | KCH fifth year |
|---|---|---|---|---|---|---|---|---|
| Mean | −0.48±11.74 | 1±16 | −2.08±14.62 | 2±17 | −4.15±15.2 | 5±17 | −4.03±15.34 | −5.23±17.2 |
| Median (95% CI) | 0 (−2.7, 1.8) | 3 (−5, 10) | 0 (−4.9, 0.79) | 5 (−5, 12) | −4 (−7, −1) | 8 (−2, 15) | −5 (−7, −1) | −5 (−8.6, −1.8) |
| ≥15 letter gain (%) | 10 | 14 | 10 | 20 | 9 | 26 | 13 | 12 |
| 10–14 letter gain (%) | 11 | 14 | 6 | 14 | 5 | 18 | 2 | 4 |
| 5–9 letter gain (%) | 10 | 17 | 18 | 17 | 14 | 18 | 12 | 9 |
| No change±4 letters (%) | 42 | 29 | 27 | 22 | 22 | 21 | 20 | 22 |
| 5–9 letter loss (%) | 6 | 9 | 8 | 9 | 12 | 4 | 17 | 16 |
| 10–14 letter loss (%) | 7 | 3 | 10 | 6 | 11 | 4 | 8 | 10 |
| >15 letter loss (%) | 14 | 14 | 21 | 13 | 27 | 8 | 28 | 27 |
Abbreviations: DRCRN, Diabetic Retinopathy Clinical Research Network; VA, visual acuity.