Unilateral Glaucoma Workup

Updated: Jul 28, 2020
  • Author: Ingrid U Scott, MD, MPH; Chief Editor: Hampton Roy, Sr, MD  more...
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Laboratory Studies

Lab studies are indicated based on the suspected etiology (eg, thyroid function test, vasculitis workup) of unilateral glaucoma.


Imaging Studies

B-scan echography to evaluate for orbital tumor, foreign body, and extraocular muscle enlargement (in thyroid ophthalmopathy and other conditions with EVP); also indicated if fundus cannot be visualized [1]

CT scan of orbits to evaluate orbital fracture, foreign body, dilation of superior ophthalmic vein, and enlargement of cavernous sinus (present with carotid-cavernous sinus fistulae) [2]

Angiography to evaluate for arteriovenous anomalies

Orbital venography to evaluate for orbital varix

Color Doppler to evaluate for orbital varix


Other Tests

In patients with increased EVP, gonioscopic examination may reveal reflux of blood in the Schlemm canal.

Ocular pulse amplitude, as measured by pneumotonometry, is a useful noninvasive tool to evaluate patients with carotid-cavernous fistulae. [3]

Malignancy workup for patients with superior vena cava syndrome, orbital tumors

Cardiac workup for patients with congestive heart failure