Surrounding or located around the eye or eyes.
From circum- (around) + ocular (relating to the eye, from Latin oculus). Medical/anatomical term describing structures around the eyes.
The circumocular region is why dark circles under your eyes are actually visible—the skin there is extremely thin with almost no fat underneath, so blood vessels and bruising show through easily. That's why under-eye concealer is such a big beauty industry!
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