What should you know about an eye getting red?

Redness happens when small surface blood vessels widen. Dust, smoke, dry air, rubbing, long screen sessions, and a broken blood vessel can all cause it. Conjunctivitis can produce redness with watering, discharge, itch, or eyelids sticking together. Allergic conjunctivitis commonly causes itch and watering, often in both eyes.

The appearance of redness does not by itself show how serious the cause is. A contact lens, chemical, foreign body, or injury changes the risk and should be taken seriously.

Stop rubbing the eye and wash your hands. Remove contact lenses and eye makeup. If dust is suspected, rinse with clean water or sterile saline without trying to dig out an embedded object. A cool clean compress may calm irritation or itch.

Do not use someone else’s drops or leftover medicine. If a chemical enters the eye, rinse continuously with clean running water while arranging urgent medical help.

Get urgent assessment for moderate or severe pain, light sensitivity, reduced vision, a foreign body that will not wash out, chemical exposure, injury, marked swelling, or a red eye in a contact lens wearer. Seek advice if redness persists, spreads, or comes with discharge or repeated episodes.

Ask what part of the eye is affected and whether the cause appears infectious, allergic, dry, or injury-related. Check when to restart lenses, whether drops are needed, and which warning signs require same-day care.