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| Patient | Age | Sex | Onset of hearing loss | Hearing threshold (dB) | Fundus examination | Visual acuity |
|---|---|---|---|---|---|---|
| SF01.02 | 36 | F | Congenital | 70 | Normal retina, blood vessels and optic disc | 20/20 |
| SF42.03 | 33 | F | Congenital | 60 | ND | 20/20 |
| SF42.14 | 30 | M | Congenital | 90 | ND | 20/20 |
