Eye Flu (Conjunctivitis) in the Monsoon: Symptoms, Care & When to See a Doctor
Every monsoon, eye clinics across Ahmedabad see the same surge: red, watery, sticky eyes spreading quickly through families, schools and workplaces. Most people call it “eye flu.” The medical name is conjunctivitis — inflammation of the thin, clear membrane (the conjunctiva) that covers the white of the eye and lines the inner eyelids.
The reassuring truth is that the common monsoon eye flu is usually viral, and like a cold it tends to settle on its own within one to two weeks. The important truth is that it is highly contagious, a few cases genuinely need a doctor, and some well-meant home remedies do more harm than good. This guide explains how to recognise eye flu, how to care for it safely, how to stop it spreading, and the warning signs that mean you should be seen the same day.
What is “eye flu”?
“Eye flu” is the everyday term for infectious conjunctivitis. During monsoon outbreaks it is most often caused by a virus (commonly adenovirus), which is why antibiotics usually do nothing for it. The eye looks pink or red because the tiny surface blood vessels become inflamed; the watering, grittiness and discharge follow from that inflammation. It often starts in one eye and spreads to the other a day or two later.
Why eye flu spikes in the monsoon
Warmth, humidity and waterlogging during the rains help viruses and bacteria survive longer on hands and surfaces. People crowd indoors, share towels and touch their faces more, and contaminated water can splash into the eyes. None of this means the rain itself causes eye flu — it spreads from person to person — but the season makes that spread far easier.
Symptoms: how to recognise eye flu
Typical features of viral eye flu include:
- Redness or a pink tinge to the white of the eye
- Watery discharge, with the lashes often stuck together in the morning
- A gritty, “something-in-the-eye” sensation
- Mild swelling of the eyelids and sometimes a tender lump in front of the ear
- Some sensitivity to bright light
Crucially, in simple conjunctivitis your vision stays essentially normal (apart from temporary blur that clears when you blink away the discharge), and there is no significant pain. When either of those is not true, it is no longer “just eye flu” — see the red-flag section below.
Viral, bacterial or allergic?
Telling these apart guides treatment. Viral conjunctivitis is the usual monsoon culprit: watery discharge, often with a cold or sore throat, very contagious. Bacterial conjunctivitis tends to produce thicker, yellow-green, sticky discharge; most mild cases still settle on their own, and antibiotic drops are reserved for selected cases. Allergic conjunctivitis is not an infection at all — it is itch-dominant, affects both eyes, comes and goes with the season, and is not contagious. Persistent allergic, itchy eyes also matter because vigorous eye rubbing is linked to corneal problems over time.
How eye flu spreads — and a common myth
Eye flu spreads by contact, not by sight. You cannot catch it simply by looking at an affected person — that is a myth. It spreads when the virus travels from an infected eye to hands, towels, pillows, phones, taps or eye-make-up, and then to someone else’s eyes. That single fact is also the key to prevention: break the contact chain and you break the spread.
Caring for eye flu at home
For uncomplicated viral eye flu, supportive care is the mainstay while the infection runs its course:
- Clean gently and often — wipe away discharge with a clean, disposable tissue or a fresh cloth, wiping once and discarding.
- Cool compresses over closed lids ease the soreness and swelling.
- Lubricating (artificial tear) drops soothe the grittiness; use single-use vials or your own bottle that no one else touches.
- Rest the eyes and pause contact-lens wear and eye make-up until you have fully recovered.
Two honest cautions. First, antibiotic drops do not treat viral eye flu — the most common kind — so they are not a routine answer, and reaching for them automatically adds cost and side-effects without benefit. Second, never use a leftover or over-the-counter steroid eye drop on your own. Steroid drops can dramatically worsen certain infections (such as herpes of the eye) and raise eye pressure. Any medicated drop should be started only after an eye doctor has examined the eye.
How to stop it spreading to your family
- Wash hands frequently with soap, especially after touching your eyes or face.
- Use a separate towel, pillow and bedsheet, and avoid sharing them.
- Try not to touch or rub the eyes; keep phones and shared surfaces wiped down.
- Stay home from school or work for the most contagious early days where you can.
- Discard eye cosmetics used during the infection and do not share them.
Dark glasses do not treat eye flu, but they can reduce light discomfort and remind others to keep a little distance — both reasonable, neither a cure.
Red flags: when eye flu needs a doctor
Most eye flu is mild and self-limiting. Please arrange a prompt eye examination — ideally the same day — if any of these appear:
- Pain in the eye (more than mild irritation), or marked sensitivity to light
- Blurred or reduced vision that does not clear on blinking
- Thick, copious or green discharge, or severe redness and swelling
- Symptoms that are worsening, or not improving after about a week
- A contact-lens wearer, a newborn, or someone with a weak immune system or recent eye surgery
These features can signal involvement of the cornea — the clear front window of the eye — which needs proper assessment and, sometimes, urgent treatment. You can read more about corneal infections and care on our cornea page.
A special note for contact-lens wearers
If you wear contact lenses and develop a red, painful or watering eye, remove the lenses straight away and keep them out, and have the eye checked before wearing them again. In lens wearers a red eye can occasionally be an early corneal infection (microbial keratitis) rather than simple conjunctivitis, and that is sight-threatening if missed. Our contact lens service can review your lenses and hygiene routine once the eye has settled.
Care you can trust, at both our Ahmedabad branches
If you are unsure whether what you have is simple eye flu or something that needs treatment, it is always safer to have it looked at. A quick eye examination can confirm the diagnosis, rule out corneal involvement, and spare you unnecessary medicines.
Worried about a red or watering eye this monsoon? Book an assessment at Balaji Horizon Eye Hospital, Ahmedabad (Science City & Naranpura). Call +91 92748 67875 or book an appointment online.
Frequently asked questions
How long is eye flu contagious?
Viral eye flu is typically contagious from shortly before symptoms begin until the redness and watering have clearly settled — often around one to two weeks, and most infectious in the first several days. Careful hand and towel hygiene throughout that period is the best way to protect others.
Do I need antibiotic eye drops for eye flu?
Usually not. The common monsoon eye flu is viral, and antibiotics do not work against viruses. Even most mild bacterial conjunctivitis settles on its own. Medicated drops should be used only if an eye doctor examines the eye and advises them – not started automatically at home.
Can I catch eye flu just by looking at an infected person?
No — that is a myth. Eye flu spreads by contact: through hands, towels, surfaces and shared items that carry the virus to your eyes. It does not spread by eye contact or by looking at someone.
When should I see a doctor instead of waiting it out?
See an eye doctor promptly if you have eye pain, light sensitivity, blurred or reduced vision, thick or copious discharge, symptoms that are worsening or not improving after about a week, or if you wear contact lenses. These can point to something beyond simple conjunctivitis.
Can I wear my contact lenses or eye make-up during eye flu?
No. Stop contact lenses and eye make-up until the eye has fully recovered, and discard make-up used during the infection. For lens wearers, a red or painful eye should always be checked before lenses go back in.
Medically reviewed by Dr. Jayadatt D. Patel, MBBS, MS (Ophthalmology), FCRS — Cornea, Cataract & Refractive Surgeon. Last reviewed: 30 June 2026.
This article is for general education only and is not a substitute for a professional eye examination. If you have eye pain, reduced vision, or symptoms that are not improving, please consult a qualified ophthalmologist.
This article is for general awareness and does not replace a consultation with an eye specialist.
Have a question about your eyes?
Book a consultation at Balaji Horizon Eye Hospital — Science City & Naranpura, Ahmedabad.
Care you can trust
Specialist surgeon
Fellowship-trained cornea, refractive & cataract surgeon.
Advanced technology
First in Gujarat with ANTERION & SPECTRALIS (GMPE).
Ethical, honest care
Evidence-based, individualised advice — no overtreatment.
Two locations
Convenient care at Science City & Naranpura, Ahmedabad.
Dr. Jayadatt Patel
MBBS, MS (Ophthalmology), FCRS — Cornea, Refractive & Ocular Surface Surgeon
Founder & Director of Balaji Horizon Eye Hospital and Consultant Cornea & Refractive Surgeon at C.H. Nagri Eye Hospital, Ahmedabad. Dr. Patel focuses on accurate diagnosis, vision preservation and individualised, ethical care.
View full profile →Ready to book your consultation?
Same specialist care at both our Ahmedabad branches.