Every year, as the monsoon arrives, so does a familiar wave of red, watery, irritated eyes moving through households, schools, and offices. Ophthalmology clinics across Indian cities see cases climb sharply during these months — and along with the infection itself, an old piece of advice resurfaces every single year: don’t look into the eyes of someone who has it.
This advice is well-intentioned. It is also based on a misunderstanding of how conjunctivitis actually spreads — one that has persisted for generations, largely because the truth is less dramatic than the myth.
What Conjunctivitis Actually Is
Conjunctivitis — commonly known as pink eye or, in India, “Madras eye” or “eye flu” — is inflammation of the conjunctiva, the thin transparent membrane covering the white part of the eye and the inside of the eyelids. When this membrane becomes inflamed, blood vessels dilate, giving the eye its characteristic pink or red appearance, along with symptoms including watering, itching, a gritty sensation, and sometimes discharge that can crust the eyelids, particularly overnight.
Importantly, conjunctivitis is not one single condition. It comes in three distinct forms with different causes: viral, bacterial, and allergic. According to 2023 clinical guidance from the American Academy of Ophthalmology, viral conjunctivitis is the most common overall and tends to affect adults more frequently; bacterial conjunctivitis is more common in children; and allergic conjunctivitis, triggered by irritants such as pollen, smoke, or chlorine, also affects adults more often than children. Only the viral and bacterial forms are contagious. Allergic conjunctivitis, despite producing similar symptoms, is not an infection at all and cannot be transmitted from one person to another.
This distinction matters because avoidance behaviour — staying away from an affected family member, avoiding eye contact — is frequently applied uniformly, regardless of which type is actually present.
Why Monsoon Season Triggers a Predictable Surge
The seasonal spike is well documented. The All India Ophthalmological Society has confirmed that conjunctivitis cases roughly double during monsoon months in major cities including Delhi, Mumbai, Hyderabad, and Bengaluru. The 2023 monsoon season saw this pattern intensify into what was formally classified as an epidemic across North and Eastern India, driven almost entirely by adenovirus — the pathogen responsible for the majority of viral conjunctivitis outbreaks in the country.
Several environmental factors converge during monsoon to create ideal conditions for this kind of outbreak. Humidity and waterlogging increase the survival time of viruses on surfaces. Crowded, poorly ventilated spaces — classrooms, offices, public transport — increase close contact. Adenovirus itself has a short incubation period, meaning an infected person can be shedding virus and unknowingly contagious before symptoms even appear.
This combination — a virus that survives well on surfaces, a short incubation window, and increased indoor crowding during rain — is what produces the sharp, predictable seasonal curve that ophthalmologists see every year.
The Actual Transmission Route
Here is the central correction that matters most: conjunctivitis does not spread by looking at an infected person’s eyes. It spreads through contact — specifically, through touching a contaminated surface or object and then touching one’s own eyes.
A study published in the Journal of Clinical Ophthalmology and Research examined 387 patients during the 2023 North India outbreak and found that 75.2% had a definitive, identifiable exposure to an infected person within their family or workplace. This confirms that transmission is driven by proximity and shared contact — not by any visual or airborne mechanism.
The typical chain works like this: an infected person touches their own eye, perhaps to relieve itching or wipe away discharge. They then touch a surface — a door handle, a phone screen, a shared towel, a light switch. The virus, which can survive on surfaces for an extended period, remains viable there. The next person to touch that same surface, and then touch their own eye without washing their hands in between, becomes exposed.
This is precisely why conjunctivitis moves so efficiently through households and workplaces. Family members share bathrooms, towels, and door handles constantly. Office colleagues share keyboards, phones, and door handles. None of this requires eye contact at all — it requires only the ordinary, unremarkable contact of daily shared living and working spaces.
Why the Myth Persists
The “don’t look into their eyes” advice likely persists because it is intuitive in a way that “wash your hands and don’t touch your eyes” is not. Eye contact feels like the obvious point of transmission for an eye disease — it is a natural, if incorrect, inference. The actual mechanism, involving indirect surface contact and delayed hand-to-eye transfer, is less visually intuitive and harder to communicate simply, even though it is the version supported by the evidence.
The consequence of the myth is not merely academic. When people focus prevention efforts on avoiding eye contact, they may neglect the behaviours that actually interrupt transmission — frequent handwashing, not sharing towels or eye drops, and avoiding touching the face. The myth, in other words, can distract from genuinely effective prevention.
What Actually Helps
Since viral conjunctivitis has no specific antiviral treatment and is self-limiting — typically resolving within one to two weeks regardless of intervention — the practical focus during an active infection is twofold: managing symptoms and interrupting further spread.
For the infected individual: frequent handwashing, particularly after touching the eyes or face; avoiding sharing towels, pillowcases, or eye drops with anyone else; using a fresh, clean cloth for each eye if wiping discharge, rather than reusing the same cloth; and avoiding contact lens use until symptoms fully resolve. Cold compresses can ease discomfort, and artificial tears can help with irritation, though neither treats the underlying infection.
For household and workplace members: regular handwashing remains the single most effective preventive measure, given that contaminated surfaces are the primary transmission route. Avoiding shared personal items — towels, pillows, eye cosmetics — during an active outbreak in the household reduces risk substantially. Disinfecting frequently touched surfaces, particularly door handles, light switches, and shared electronics, interrupts the surface-to-hand-to-eye chain directly.
Staying home from school or work during the most contagious phase — generally the first several days of symptoms — is also a meaningful, evidence-supported measure, though one that is often skipped due to the mild, self-limiting nature of the illness and the pressure to maintain routine.
When to Seek Medical Attention
Most cases of viral conjunctivitis resolve without complication. However, certain features warrant prompt evaluation: significant eye pain rather than mild irritation, sensitivity to light, blurred vision, or symptoms that worsen rather than gradually improve after several days. These can indicate corneal involvement or a bacterial infection requiring antibiotic treatment, which viral conjunctivitis does not.
Recurrent or unusually severe outbreaks within a household or workplace also warrant a conversation with an ophthalmologist about specific measures for that setting, particularly where children, elderly family members, or immunocompromised individuals are present.
The Bottom Line
Conjunctivitis spreads through hands and shared surfaces, not through eye contact. The monsoon surge that Indian ophthalmology clinics see every year is driven by adenovirus, environmental conditions that favour its survival, and the ordinary shared contact of households and workplaces — not by looking at someone with red eyes.
The advice passed down for generations targeted the wrong behaviour. Understanding the actual transmission route — and acting on it through hand hygiene and avoiding shared personal items — is what genuinely interrupts the chain during the season when it matters most.
The eyes were never the problem. The hands were.
📚 References:
Mohan A, Gajraj M, Bansal E, Vishnoi I. Pattern of presentation and laboratory findings of patients with epidemic keratoconjunctivitis in the 2023 outbreak in North India. Journal of Clinical Ophthalmology and Research, 2024.
All India Ophthalmological Society — Monsoon Conjunctivitis Surge Report, 2023.
American Academy of Ophthalmology. Pink Eye Myths and Facts, 2023.
Adenovirus transmission and incubation period — clinical review, 2024.
For evaluation of conjunctivitis or other eye conditions, SDDM Hospital’s Ophthalmology department is available at +91-191-2464637 or sddm.hospital.
This article is for general educational purposes and does not constitute medical advice. Please consult a qualified healthcare professional for individualised assessment and guidance.
SDDM Hospital, Jammu Multi-Specialty Care | Ophthalmology 📍 Channi Himmat, Jammu | 📞 +91-191-2464637 | 🌐 sddm.hospital
