Natural remedies for red eyes: what to know

Redness is a visible sign of irritation or inflammation on the eye surface. Allergic conjunctivitis often brings itching and watery eyes, while infectious conjunctivitis may cause discharge and can spread between people. Dry air, smoke, dust, rubbing, contact lenses and a small burst blood vessel are other possibilities. Redness itself cannot show which cause is present.

Rest your eyes from screens, avoid smoke and dust, and use a clean cool compress over closed lids. Wash your hands frequently and avoid rubbing. Do not share towels or eye cosmetics, and replace old mascara. Remove contact lenses and do not wear them while the eye is red or uncomfortable. Never put food, oils, plant extracts or homemade drops in the eye; they may irritate or contaminate it.

Seek urgent care for eye pain, light sensitivity, reduced or blurred vision, injury, chemical exposure, severe swelling or redness in a contact-lens wearer. A GP or eye professional should assess redness that does not settle, keeps returning or comes with discharge. Do not assume that a red eye is harmless because it started after irritation.

Ask what may be triggering the redness, whether drops are appropriate, and how long to avoid lenses, cosmetics or shared personal items.