B-scan

Ophthalmic Procedures
Labelled Diagram of the Eye

B-Scan is a short term that refers to B-scan ultrasonography.

The word "ultrasonography" on its own is a more general term. It is not specific to examination of the eye.

A B-scan, or B-scan ultrasonography, is a routine diagnostic test used in ophthalmology. It involves examination of the tissues of the eye in cross-section, using a high-frequency ultrasound technique. This technique is particularly useful for examination of the back part of the eyeball, especially if direct view is obscured due to the condition of the eye (e.g. by cataracts).

A B-scan may be compared and contrasted with an A-scan in which the axial length of the eye is examined in cross-section using a high-frequency ultrasound machine.

More about Ophthalmology:

This section includes short definitions of many diseases, disorders, and conditions of the eyes and visual system.
For definitions of other terms in this category, choose from the list to the left (but note that this is not a complete/exhaustive list).

Other related pages include

For further information see also our pages of books about ophthalmology.

MCQ Companion to the Eye (Textbook) The Secret of Perfect Vision: How You Can Prevent and Reverse Nearsightedness What Your Doctor May Not Tell You About(TM) Glaucoma: The Essential Treatments and Advances That Could Save Your Sight

The following books may also be of interest:

The Aging Eye (Harvard Medical School)
MCQ Companion to the Eye (Textbook)
The Secret of Perfect Vision: How You Can Prevent and Reverse Nearsightedness
What Your Doctor May Not Tell You About(TM) Glaucoma: The Essential Treatments and Advances That Could Save Your Sight

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