What should you know about constant bloodshot eyes?

Redness happens when small blood vessels on the eye surface widen. Dry air, dust, smoke, contact lenses, prolonged screen use, or rubbing can irritate the surface. Allergic conjunctivitis often brings itching, watering, and redness in both eyes. Conjunctivitis may cause discharge, sticky eyelids, or spread between eyes. A bright red patch can also follow a small surface blood vessel breaking, often without pain or vision change. Persistent redness with pain, light sensitivity, blurred vision, or a feeling that something is stuck needs a clinical assessment rather than self-treatment.

Avoid rubbing your eyes and pause contact lenses until the eyes feel well and a clinician advises restarting them. Rinse away obvious irritants with clean water, use a cool compress for itch or irritation, and take regular screen breaks. Do not share towels, cosmetics, or eye drops. Preservative-free lubricating drops may soothe dryness, but redness-relieving drops can mask symptoms or cause rebound redness when overused. A pharmacist or eye clinician can help choose a suitable product.

Seek urgent eye care for severe pain, sudden vision change, marked light sensitivity, an eye injury, chemical exposure, a very swollen eyelid, or redness while wearing contact lenses. Arrange a routine appointment if redness keeps returning, lasts despite removing irritants, or comes with discharge or persistent discomfort. Call emergency services for vision loss or severe injury; rinse a chemical exposure continuously while arranging help.

Ask what is causing the redness, whether your medicines or lenses contribute, which drops are appropriate, and what symptoms should prompt same-day review.