A B-scan ultrasound 👀 is a diagnostic test that uses sound waves to create images of the eye’s internal structures, especially the posterior segment.
Key uses
- Retinal detachment: Shows if the retina is detached or torn.
- Vitreous hemorrhage: Visualizes blood in the vitreous.
- Tumors: Helps identify and measure eye tumors.
- Foreign bodies: Locates objects inside the eye.
- Trauma assessment: Evaluates damage when the eye’s hard to examine.
How it works
- Probe placement: Gel is applied; the probe is placed on the eyelid (closed or open).
- Sound waves: Echoes bounce off structures, creating images.
- Interpretation: Images show structures like the retina, vitreous, and orbit.
Types of scans
- Axial scan: Shows structures along the eye’s axis.
- Longitudinal scan: Images are taken in different meridians.
Tips
- Painless and non-invasive.
- Coupling gel is used for better contact.
- Results are immediate.