Acute conjunctivitis, popularly known as pink eye, is an inflammation of the conjunctiva—the thin, clear membrane covering the white of your eye.
Whilst it is often a minor irritation, understanding the causes and knowing when to seek professional medical advice is crucial for protecting your vision.
In this guide, we break down the essential facts about pink eye, from identifying symptoms to effective treatments.
If you suspect you have pink eye, look for these five hallmark symptoms:
Redness and Swelling: The “pink” appearance caused by inflamed blood vessels.
Discharge and Crusting: Sticky yellow or green discharge (bacterial) or watery discharge (viral) that can crust over the lashes overnight.
Itching and Burning: A persistent gritty sensation, as if something is stuck in your eye.
Tearing and Sensitivity: Increased tear production and slight discomfort in bright light.
Blurred Vision (Temporary): Vision may blur due to discharge but should clear immediately after blinking or wiping the eye.
Understanding the “why” behind the infection helps determine the treatment:
Common Causes
Viral Infections: Often linked to the common cold (Adenovirus). Highly contagious.
Bacterial Infections: Typically caused by Staphylococcus or Streptococcus.
Allergens: Reactions to pollen, dust mites, or pet dander.
Irritants: Smoke, pool chlorine, or chemical fumes.
Who is Most at Risk?
Schoolchildren & Daycare Workers: Due to high rates of viral/bacterial spread.
Contact Lens Wearers: Especially those with poor lens hygiene.
Allergy Sufferers: Seasonal changes often trigger allergic conjunctivitis.
Immune-Compromised Individuals: Those with weakened defenses may face more frequent infections.
Important Note: Conjunctivitis in newborns can be very serious. Seek immediate medical attention if an infant shows signs of eye redness or discharge.
Most cases of pink eye are manageable with home care or over-the-counter (OTC) pharmacy options:
Viral: Usually clears on its own. Use cool compresses for comfort.
Bacterial: May require antibiotic drops like 1% chloramphenicol, available at most pharmacies.
Allergic: Antihistamine eye drops and avoiding triggers are the most effective remedies.
Irritant: Flush the eye with saline or clean water to remove the irritant.
Top Tip: Stop wearing contact lenses immediately if you notice symptoms. Do not put them back in until 24 hours after your symptoms have completely cleared.
While pink eye often resolves within a few days, you should consult a healthcare provider if you experience:
Moderate to severe eye pain.
Loss of vision or significant blurring that doesn’t clear.
Intense light sensitivity.
Symptoms that do not improve after 3 days of OTC treatment.
Pre-existing eye conditions or a history of recurrent infections.
Since viral and bacterial conjunctivitis are highly contagious, follow these hygiene steps:
Wash your hands frequently with soap and water.
Avoid touching or rubbing your eyes.
Don’t share towels, pillowcases, or makeup.
Replace eye makeup used during an infection to prevent re-infection.
| Feature | Viral | Bacterial | Allergic |
| Appearance | Bright pink, watery | Red, thick discharge | Pink, puffy, watery |
| Itchiness | Mild | Low | High |
| Contagious? | Yes (High) | Yes | No |
| Treatment | Time / Compresses | Antibiotics | Antihistamines |
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