FIGURE 3. KERATIC PRECIPITATES. COURTESY OF WIKIMEDIA COMMONS AND JONATHAN TROBE, MD.


In addition to a good history, perform a thorough eye exam.  This includes visual acuity, intraocular pressure, a slit lamp exam, and a fluorescein exam.  Findings concerning for uveitis include circumcorneal injection, cell and flare, and hypopyon.  Keratic precipitates (inflammatory cells deposited on corneal epithelium) can also be seen (see figure 3).  Evaluation of the posterior structures requires dilation and cannot be easily performed in the ED.


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