Examples of theoretical cases with amblyopia during treatment
| Case | Amblyopic eye (start) | Amblyopic eye (end) | Fellow eye (start) | Fellow eye (end) | ⩾6/9 | ⩾3 lines | Residual amblyopia | Proportional improvement |
|---|---|---|---|---|---|---|---|---|
| Outcomes for each case are presented according to each of the four methods of defining successful outcomes (achievement to 6/9 or better, improvement by three or more lines, residual amblyopia, and proportional improvement calculations). | ||||||||
| Proportional improvement can be equivalently expressed in percentage. | ||||||||
| A proportional outcome >1.0 signifies visual acuity of the once amblyopic eye improving to levels higher than that of the fellow eye while a negative proportional outcome signifies deterioration of the amblyopic eye during treatment. | ||||||||
| 1 | 1.00 | 0.7 | 0.05 | 0.0 | No | Yes | 0.70 | (1.0−0.7)/(1.0−0.0) = 0.30 |
| 2 | 0.30 | 0.0 | 0.0 | 0.0 | Yes | Yes | 0.0 | (0.3−0.0)/(0.3−0.0) = 1.00 |
| 3 | 0.72 | 0.62 | 0.20 | −0.18 | No | No | 0.79 | (0.72−0.62)/(0.72 to −0.18) = 0.11 |
| 4 | 0.20 | 0.0 | 0.06 | −0.04 | Yes | No | 0.04 | (0.2−0.00)/(0.2 to −0.04) = 0.83 |
| 5 | 0.90 | 0.15 | 0.30 | −0.3 | Yes | Yes | 0.45 | (0.90−0.15)/(0.90 to −0.3) = 0.63 |
| 6 | 1.0 | 0.35 | 0.25 | 0.25 | No | Yes | 0.1 | (1.00−0.35)/(1.00−0.25) = 0.87 |
| 7 | 0.9 | 0.1 | 0.1 | 0.2 | Yes | Yes | −0.1 | (0.9−0.1)/(0.9−0.2) = 1.14 |