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| Journal (No.) | Equivalent, No. (%) | |
|---|---|---|
| Snellen | Non-Snellen | |
| American Journal of Ophthalmology (127) | 29 (22.8) | 98 (77.2) |
| JAMA Ophthalmology (39) | 16 (41.0) | 23 (59.0) |
| Ophthalmology (108) | 31 (28.7) | 77 (71.3) |
| Retina (137) | 69 (50.4) | 68 (49.6) |
| Total (411) | 145 (35.3) | 266 (64.7) |
