Pink eye, also known as conjunctivitis, is a common eye condition that causes redness and inflammation of the conjunctiva, which is the thin membrane that covers the white part of the eye and the inner surface of the eyelids.

It can occur in one or both eyes and can be caused by various factors. Let’s explore 8 common causes of pink eyes in pictures.

1. Bacterial Infection

Pink eye caused by a bacterial infection is highly contagious and can spread easily from person to person. It can result in symptoms such as redness, itching, discharge, and crusting of the eyelids.

Antibiotic eye drops or ointment are commonly prescribed to treat bacterial conjunctivitis.

2. Viral Infection

Viral conjunctivitis is another common cause of pink eyes. It is often associated with symptoms like watery eyes, sensitivity to light, and a gritty sensation in the eyes.

This type of conjunctivitis usually resolves on its own within a week or two, with supportive treatment like artificial tears and cold compresses.

3. Allergic Reaction

Pink eye due to an allergic reaction can occur when the eyes come into contact with allergens such as pollen, dust mites, or pet dander. It is often accompanied by itching, watering, and swelling of the eyes.

Avoiding the allergen and using antihistamine eye drops can help alleviate symptoms.

4. Irritants

Exposure to irritants like smoke, chemicals, or foreign objects can lead to pink eye. These irritants can cause redness, discomfort, and a burning sensation in the eyes.

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Flushing the eyes with clean water and avoiding further exposure to the irritant are essential for quick recovery.

5. Contact Lenses

Improper use or poor hygiene practices associated with contact lenses can increase the risk of developing pink eye. Contact lens-related conjunctivitis often presents with symptoms like redness, pain, blurred vision, and excessive tearing.

Following proper hygiene and lens care guidelines can help prevent this condition.

6. Dry Eyes

Dry eyes occur when the eyes do not produce enough tears or when the tears evaporate quickly. This can lead to inflammation of the conjunctiva, resulting in pink eye.

Symptoms may include redness, stinging or burning sensation, and a feeling of grittiness. Artificial tears and humidifiers can help alleviate dry eye symptoms.

7. Blepharitis

Blepharitis is a condition characterized by inflammation of the eyelids. When the eyelids become inflamed, it can cause pink eye symptoms such as redness, itching, and crusty eyelashes.

Warm compresses and proper eyelid hygiene are often recommended to manage blepharitis and prevent recurrent conjunctivitis.

8. Foreign Body

When a foreign object, such as dust, an eyelash, or a small particle, enters the eye, it can cause irritation and lead to pink eye symptoms. These symptoms may include redness, tearing, and a feeling of something being stuck in the eye.

Removing the foreign body and rinsing the eye with clean water can provide relief.