what causes conjunctivitis 5 tips & Types

Conjunctivitis (or pink eye) is an inflammation of the conjunctiva – the transparent mucous membrane that covers the white part of the eye. what causes conjunctivitis.

what causes conjunctivitis

Swelling and redness of the eye are among the infectious causes of conjunctivitis, including bacteria, viruses, and fungi. Non-infectious causes include allergies, external bodily infections, and chemicals.

The phrase, “pink eye” is commonly used to refer to conjunctivitis, as pinkness or redness of the conjunctiva is one of the most noticeable symptoms.

Types of conjunctivitis:

Bacterial conjunctivitis (conjunctivitis)

Bacterial conjunctivitis is a common type of pink eye, which is caused by bacteria and infects the eye through various sources of contamination. The bacteria can be spread through close contact with an infected person, contact with contaminated surfaces, or other means, such as sinus or ear infections.

Allergic conjunctivitis can result when your eyes are exposed to a substance they are highly sensitive to, such as pollen in the air.


The most common types that cause bacterial conjunctivitis include Staphylococcus aureus, Haemophilus influenza, Streptococcus pneumonia, and Pseudomonas aeruginosa. Bacterial conjunctivitis usually causes a thick discharge or pus from the eye and affects one or both eyes.

Like any bacterial infection, antibiotics are needed to eliminate the bacteria. Treatment of bacterial conjunctivitis is usually accomplished with topical antibiotic eye drops and/or eye ointment. Treatment usually lasts one to two weeks, depending on the severity of the infection.

Gonococcal and chlamydial conjunctivitis (conjunctivitis)


You can get pink eye infections with sexually transmitted diseases, including gonorrhea and chlamydia. Newborns can be exposed when they pass through the birth canal of an infected mother.

Trachoma (ROH) is a form of chlamydial infection that causes scarring on the surface of the eye. Trachoma is the main source of preventable visual deficiency on the planet.

If you are pregnant and suspect you may have a sexually transmitted disease, you need to be tested and treated for any infections before your baby is born.

read; importance-of-vitamin-d.

Viral conjunctivitis (conjunctivitis)

Viral conjunctivitis (conjunctivitis) is another common type of pink eye that tends to be highly contagious because airborne viruses can be spread through sneezing and coughing. Viral conjunctivitis can also occur with common viral upper respiratory infections such as measles, flu, or the common cold.

Viral conjunctivitis usually causes a watery discharge. The infection usually starts in one eye and quickly spreads to the other eye.

Unlike bacterial infections, antibiotics will not work against viruses. No eye drops or ointments are effective against the common viruses that cause viral conjunctivitis. But viral conjunctivitis is self-limiting, which means it will go away on its own after a short period of time.

Usually, with viral conjunctivitis, three to five days are at their worst. After that, the eyes start to improve on their own.

Treatment of viral conjunctivitis usually includes supportive therapies, such as topical eye drops, that help reduce symptoms: eg, vasoconstrictors to whiten the eye, surface Decongestants to reduce inflammation, and topical antihistamines to reduce itching work. Treatment is usually continued for one to two weeks, depending on the severity of the infection.

Allergic conjunctivitis (conjunctivitis)

It is common to have this pink eye caused by an eye allergy. Eye sensitivities, of different sorts, can be set off by allergens including dust, creature dander, and residue parasites.

The most common symptom of allergic conjunctivitis is itchy eyes, which can be relieved with special eye drops containing antihistamines to control allergic reactions.

Staying away from the allergen is likewise significant in the treatment of unfavorably susceptible conjunctivitis. Allergic conjunctivitis can occur seasonally or even during the year, depending on the reaction caused by the allergen.

This pink eye usually affects both eyes and mostly affects those wearing soft contact lenses. This condition can cause contact lens intolerance, itching, heavy discharge, watery eyes, and red bumps under the eyelids.

You will need to stop wearing your contact lenses at least for a while. Your eye doctor may also recommend that you switch to a different type of contact lens to reduce the chances of conjunctivitis coming back.