How the test is performed:
You will sit in a chair. The eye will be numbed with anesthetizing drops. The ultrasound wand (transducer) is placed against the front surface of the eye.
There are two types of scans:
For the A-scan, you will be asked to look straight ahead.
If a B-scan is performed, you will be asked to look in multiple directions.
How to prepare for the test:
No special preparation is necessary for this test.
How the test will feel:
- Your eye is numbed, so no discomfort is involved. You may be asked to look in a different directions to improve the ultrasound image or to view different areas of the eye.
- A lubricant placed on the transducer may run on your cheek, but there will be no discomfort or pain. The test takes about 15 minutes.
Why the test is performed:
The ultrasound helps evaluate the farthest part of the eyeball when you have cataracts or other reasons that make it hard to look into your eye. The test may help diagnose retinal detachment or other disorders when the eye is not clear and the ophthalmologist can not use routine examining equipment. An A-scan ultrasound measures the eye for the proper power of a lens implant before cataract surgery.
What the risks are:
To avoid scratching the cornea, do not rub the anesthetized eye until the anesthetic wears off (about 15 minutes). There are no other risks.
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Everyone working at the Bostan Diagnostic Eye Center has a legal duty to keep information about you confidential. Information will only ever be shared with people who have a genuine need for it (e.g. the medical staff or other professionals from whom you have been receiving care). Please be assured that we will treat your information with the highest degree of confidentiality.