Table 2.
Estimated Total Cost and Proportion (%) of Total Cost in the US and Canada by IRD
| Region | US | Canada | ||
|---|---|---|---|---|
| IRD | Costs (Lower) US$ mil (%) | Costs (Upper) US$ mil (%) |
Costs (Lower) CAN$ mil (%) |
Costs (Upper) CAN$ mil (%) |
| RP | 3,708 (27.6) | 8,791 (27.6) | 452 (28.0) | 1,847 (28.0) |
| Rod-cone dystrophy | 3,755 (28.0) | 8,901 (28.0) | 459 (27.6) | 1,874 (27.6) |
| Stargardt disease | 2,648 (19.7) | 6,278 (19.7) | 323 (19.7) | 1,317 (19.7) |
| Cone-rod dystrophy | 837 (6.2) | 1,983 (6.2) | 102 (6.2) | 418 (6.2) |
| Choroideremia | 484 (3.6) | 1,148 (3.6) | 59 (3.6) | 242 (3.6) |
| Best Disease | 443 (3.3) | 1,049 (3.3) | 54 (3.3) | 220 (3.3) |
| Usher syndrome | 371 (2.8) | 880 (2.8) | 45 (2.8) | 185 (2.8) |
| XLRS | 376 (2.8) | 890 (2.8) | 46 (2.8) | 188 (2.8) |
| LCA | 210 (1.6) | 498 (1.6) | 26 (1.6) | 105 (1.6) |
| Cone dystrophy | 200 (1.5) | 473 (1.5) | 24 (1.5) | 100 (1.5) |
| BCM | 141 (1.1) | 335 (1.1) | 17 (1.1) | 71 (1.1) |
| BBS | 92 (0.7) | 219 (0.7) | 11 (0.7) | 46 (0.7) |
| LHON | 84 (0.6) | 200 (0.6) | 10 (0.6) | 42 (0.5) |
| Achromatopsia | 64 (0.5) | 152 (0.5) | 8 (0.5) | 32 (0.5) |
| Total | 13,414 (100.0) | 31,797 (100.0) | 1,638 (100.0) | 6,688 (100.0) |