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PURPOSE
To compare the superficial (FAZ-S) and deep foveal avascular zones (FAZ-D) of non-infectious anterior and posterior uveitis to healthy controls, using optical coherence tomography angiography (OCTA).

METHODS
OCTA was performed on 74 eyes: 34 eyes with non-infectious posterior uveitis (with (post+CME) and without macular edema (post-CME)), 11 eyes with non-infectious anterior uveitis (with (ant+CME) and without macular edema (ant-CME)), and the control group which included 29 healthy eyes.

RESULTS
Eyes suffering from non-infectious posterior uveitis presented with significantly larger FAZ-D when compared to healthy controls, both in the presence or in the absence of macular edema (p < 0.001). In the presence of macular edema, eyes presenting with anterior uveitis (ant+CME) also showed significantly larger FAZ-S (p = 0.03) and FAZ-D (p < 0.001), when compared to healthy controls. In the absence of macular edema, eyes with anterior uveitis cannot be distinguished from controls (p > 0.6).

CONCLUSION
The deep retinal foveal avascular zone seems to be enlarged in eyes presenting with non-infectious posterior uveitis, both in the presence or absence of macular edema.