Table 1.
Prevalence Case of People Living with IRDs in the US and Canada
| Region | US | Canada | ||
|---|---|---|---|---|
| IRD | Cases (Lower) | Cases (Upper) | Cases (Lower) | Cases (Upper) |
| Rod-cone dystrophy | 51,325 | 122,007 | 5,841 | 23,891 |
| RP | 50,991 | 121,213 | 5,803 | 23,736 |
| Autosomal dominant RP | 15,970 | 37,962 | 1,818 | 7,347 |
| Autosomal recessive RP | 23,534 | 55,945 | 2,679 | 9,607 |
| X-linked RP | 11,487 | 27,306 | 1,307 | 6,782 |
| Stargardt disease | 36,578 | 86,951 | 4,163 | 17,027 |
| Cone-rod dystrophy | 11,436 | 27,185 | 1,302 | 5,323 |
| Choroideremia | 6,573 | 15,625 | 748 | 3,060 |
| Best Disease | 6,101 | 14,504 | 694 | 2,840 |
| Usher syndrome | 5,129 | 12,191 | 584 | 2,387 |
| XLRS | 5,070 | 12,051 | 577 | 2,360 |
| LCA | 2,895 | 6,881 | 329 | 1,347 |
| Cone dystrophy | 2,728 | 6,484 | 310 | 1,270 |
| BCM | 1,910 | 4,540 | 217 | 889 |
| BBS | 1,280 | 3,044 | 146 | 596 |
| LHON | 1,150 | 2,733 | 131 | 535 |
| Achromatopsia | 884 | 2,102 | 101 | 412 |
| Total | 184,048 | 437,511 | 20,947 | 85,672 |