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Conjunctival hyperemia is the medical term for eye redness that occurs when blood vessels in the conjunctiva expand. The conjunctiva is the clear tissue that covers the white part of the eye and lines the inside of the eyelids. This condition can appear suddenly or develop gradually and is usually a sign of irritation or inflammation rather than a disease itself.
read more about conjunctival hyperemia ...Conjunctival hyperemia happens when the small blood vessels in the eye surface dilate due to irritation or reduced oxygen flow. Common causes include dry eyes, contact lens overuse, allergies, infection, or exposure to smoke and dust. It can also appear in people with glaucoma who use medicated eye drops or in those with other eye conditions that cause inflammation.
Both types result from tear duct blockage but differ in duration and severity.
The main symptom is redness across the white part of the eye. Some people also experience mild burning, irritation, watery eyes, or a sensation of grittiness. If the redness is severe, accompanied by pain, or affects vision, it can signal a more serious problem that needs medical care.
An eye doctor diagnoses conjunctival hyperemia through a slit-lamp exam to check the blood vessels and surrounding tissue. Treatment depends on the cause. Artificial tears or lubricating drops can relieve dryness, while allergy-related redness may need antihistamine drops.
Stopping contact lens wear temporarily and improving hygiene help prevent recurrence. If redness continues, the doctor checks for infection or inflammation and prescribes appropriate medication.
Usually not, but persistent redness needs an eye exam to rule out infection or inflammation.
Yes, especially when worn too long or without proper cleaning.
Keep lenses clean, avoid rubbing your eyes, and use lubricating drops if dryness occurs.
If your eye redness is accompanied by pain, light sensitivity, or discharge, see a doctor immediately. While "red eye" is common, these symptoms can indicate serious infections that require antibiotics.
Review of Optometry. Conjunctival Hyperemia (reviewofoptometry.com). 2023.
AAO. Eye Redness (aao.org). 2024.
Cleveland Clinic. Red Eye (clevelandclinic.org). 2024.
Mayo Clinic. Pink Eye (Conjunctivitis) (mayoclinic.org). 2024.