Arterialized Conjunctival Vessels

arterialized conjunctival vessels

Arterialized conjunctival vessels are the small blood vessels on the white part of the eye that look unusually bright red, swollen, and often twisted. Instead of the normal dull red veins, these vessels can appear more like arteries because they are carrying blood under higher pressure or with a faster flow. You might notice them as a persistent, striking redness on one side of the eye that does not go away with routine treatment. They can be slightly pulsatile and sit on the surface of the eye where the lining is thin and easy to see. This change happens when arterial blood is shunted into the eye’s venous system or when the normal drainage is blocked, raising pressure in those surface veins. The appearance is important because it is a visible clue that something abnormal is affecting blood flow around the eye. When present, these vessels often accompany other symptoms like redness, tearing, eyelid swelling, a feeling of fullness, or vision changes. Doctors use this sign, along with imaging tests, to look for underlying problems that may need urgent care. If left untreated, the abnormal blood flow can raise pressure inside the eye, potentially leading to glaucoma or damage to vision, so timely evaluation and management are important.