Certified Diagnostic Ophthalmic Sonographer (CDOS) Ultrasound imaging of the eye demands precision most sonographers never encounter—probe positioning millimeters off-axis collapses diagnostic value. CDOS rigorously assesses your command of A-scan and B-scan protocols, orbital pathology recognition, and the biomechanical reasoning behind each adjustment. Expect layered questions integrating anatomy, physics, and clinical correlation rather than isolated fact recall.
| Exam Name | Certified Diagnostic Ophthalmic Sonographer |
| Exam Code | CDOS |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |


