B-scan ultrasonography can be an extremely helpful diagnostic tool in a variety of ophthalmic conditions. One example of this is in patients with suspected posterior scleritis. Since anterior segment findings may be absent or limited, b-scan ultrasonography can show characteristic features of posterior scleritis including episcleral fluid and choroidal thickening. Episcleral fluid can be seen as a hypoechoic layer just posterior to the sclera and, when visualized adjacent to the optic nerve, this forms the so-called “T-Sign.” In today’s episode, our returning contributor, Dr. Abbas Haider, shows us a great example of the t-sign in a patient with posterior scleritis. Thank you Dr. Haider for your contribution!
For more on b-scan ultrasonography, please be sure to check out episodes 73 and 74.
