Red, Watery, Sticky Eyes? Understanding Conjunctivitis ("Eye Flu")

A red, itchy, watery, or sticky eye — sometimes going around the family? Conjunctivitis (eye flu) is very common and often settles on its own. Learn the types, care, and when to see a doctor.

A red, gritty, watery eye — maybe crusted shut in the morning, maybe spreading through the whole family or office — is one of the most common eye complaints there is. Often called "eye flu," it is usually conjunctivitis, and while it looks alarming and feels irritating, most cases are mild and settle on their own. Here is a clear, plain-language guide to the types, how to care for it, how to avoid spreading it, and when it needs a doctor.

What Conjunctivitis Is

Conjunctivitis is inflammation of the thin, clear layer covering the white of the eye and the inside of the eyelids. When it gets irritated or infected, the tiny blood vessels there swell, turning the eye red or pink. It has a few different causes — viral, bacterial, and allergic — and telling them apart helps decide what care is needed.

The Common Types

TypeTypical cluesNote
Viral ("eye flu")Red, very watery, often both eyes; may follow a cold; spreads easilyMost common; usually settles on its own
BacterialRed, with sticky yellow/green discharge, lids gummed shutMay need antibiotic drops from a doctor
AllergicRed, very itchy, watery, both eyes; with sneezing/allergiesLinked to allergens; not contagious
Viral and bacterial conjunctivitis are contagious and spread easily by touch — which is why "eye flu" runs through families and workplaces. Allergic conjunctivitis is not contagious.

How to Care for It

  • Gently clean away discharge with clean cotton and cool boiled water (wipe once, then discard)
  • A cool compress soothes redness and irritation
  • Lubricating (artificial tear) drops can ease grittiness
  • Avoid rubbing the eyes
  • If you wear contact lenses, stop wearing them until it fully clears (and discard affected lenses)
  • Most viral cases settle over 1–2 weeks on their own

Stop It Spreading

  • Wash hands often, and avoid touching/rubbing the eyes
  • Do not share towels, pillows, or eye makeup
  • Change pillowcases and towels frequently
  • Stay home from close-contact settings while it is at its most infectious, if advised
See an eye doctor promptly if you have
  • Eye pain (not just irritation), or sensitivity to light
  • Blurred or reduced vision that does not clear with blinking
  • Intense redness, or a red eye after an injury or something in the eye
  • Symptoms not improving after about 2 weeks, or getting worse
  • A newborn with a red, discharging eye (needs prompt care)

Eye pain, light sensitivity, or affected vision are signs it may be more than simple conjunctivitis and need prompt assessment.

When to See a Doctor

Most conjunctivitis clears with gentle hygiene and time. See an ophthalmologist if there is eye pain, light sensitivity, vision change, thick discharge that is not settling, or symptoms lasting beyond about two weeks — a doctor can tell whether you need antibiotic or other drops. Eye complaints suit online consultation well: a clear photo and description let a doctor guide you and decide if an in-person exam is needed. Never put someone else's or leftover eye drops (especially steroid drops) in your eye without advice.

A note on sources General education based on standard ophthalmology information and trusted public health sources. It does not replace an examination by a doctor, who can assess your specific situation.

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