US Toll Free Call/Text:
+1(888) 866-7566
Int. No Call/Text:
+1(718) 301-8411

The Science Behind Pink Eye Causes: Viruses, Allergies, and More

Photo of author

Pink eye, medically known as Conjunctivitis, is a very common eye condition that causes discomfort and irritation.

It is called pink eye since a person with Conjunctivitis experiences redness in their eyes.

A person might experience pink eyes due to several causes, like viruses, bacteria, and allergies.

These pink eye causes might differ for everyone and cause extreme discomfort, requiring treatment.

In some cases, exposure to certain chemicals might also lead to Conjunctivitis in a person.

This article will discuss the causes of this eye disorder in detail and the available treatment methods.

Learning the Pink Eye Causes

A person experiences Conjunctivitis or pink eyes when there is inflammation in the conjunctiva.

The conjunctiva is the thin and transparent layer that covers the white part of the eyes and lines the inner part of the eyelids.

There are several factors that can cause pink eyes, like allergies, viruses, bacteria, and irritants.

The causes determine whether the condition of Conjunctivitis is infectious or non-infectious.

This section will discuss the different causes of pink eyes in detail.

Order Now
Are you experiencing pink eyes due to bacterial infections? Buy eye drops from Cheap Medicine Shop and treat your infection to deal with pink eyes today!

  • Locula 10% Eye Drop
  • Moxiblu LP Eye Drop
  • Viral Pink Eye

    Congenital Glaucoma
    Closeup of pink eye

    Studies state that viral pink eye is one of the most common types of Conjunctivitis and accounts for up to 75% of pink eye cases.

    This type of pink eye usually happens due to the Adena virus and is highly contagious in nature.

    People with viral pink eye may notice redness, tearing of the eyes, and a watery discharge.

    According to research, the herpes simplex virus also causes Conjunctivitis, which usually occurs in children less than five years of age.

    Another study states that the Coronavirus can also affect one’s eyes and cause pink eyes in an individual.

    Want to know about the remedies for viral pink eye to manage the symptoms of viral Conjunctivitis?

    To learn, read Viral Pink Eye Treatment: How to Get Rid of Viral Pink Eye.

    Bacterial Pink Eye

    Bacterial pink eye usually occurs due to bacteria like Streptococcus and Staphylococcus.

    The pink eye caused by Bacteria is also highly transferable and may spread through direct contact or through objects.

    According to a study, pink eyes due to these bacteria are more common among adults and the elderly.

    It also states that Haemophilus influenzae is the most common type of bacterial pink eye among children.

    The symptoms of the bacterial pink eye usually include thick yellow or greenish discharge from one’s eyes, followed by redness and discomfort.

    Want to learn everything about bacterial pink eye treatment? To gain complete knowledge, read A Comprehensive Guide to Bacterial Pink Eye Treatment.

    Allergic Pink Eye

    Research states that people may experience allergic pink eye when their conjunctiva experiences inflammation due to allergens.

    These allergens are substances, like pollen or dust, that may cause allergic reactions in an individual.

    However, unlike other causes of pink eyes, allergic ones are not contagious in nature.

    About 40% of the population experience allergic Conjunctivitis, and itching is one of its most common symptoms.

    The other symptoms usually include red eyes, watery eyes, and swelling of the eyelids.

    Additional Fact
    Although the above-mentioned causes are the most common, a person might face pink eyes due to smoke, chemical exposure, and foreign bodies in the eyes.

    Ways to Treat Pink Eye

    Use eyedropSource: megaflopp_from_Getty_Images
    Use eyedrop

    Since pink eyes are usually contagious in nature and cause constant discomfort, it is natural to seek treatment.

    In order to prevent viral pink eye, improving the hygiene of the place can help in preventing it.

    However, there is no proven treatment for viral Conjunctivitis.

    In these cases, lubricating eye drops and putting cold compresses on the eye might be beneficial.

    Doctors usually suggest antibiotic eye drops that help treat bacterial infections if a person has bacterial pink eye.

    If these infections are brought under control, it can effectively treat bacterial Conjunctivitis.

    Rinsing one’s eyes and using artificial tears in the form of eye drops can help prevent allergic pink eye.

    It is best to consult your doctor to get the most suitable artificial tears to prevent allergic pink eyes.

    If you are experiencing teary eyes, redness, or yellow discharge from the eyes, it may be a symptom of pink eye. Consult your doctor immediately to receive treatment since it can be contagious.


    Since Conjunctivitis is a common eye problem, it is natural to wonder about the pink eye causes.

    A person may experience pink eye due to viruses like Adena, Herpes simplex, and Coronavirus.

    In some cases, bacteria like Streptococcus, Staphylococcus, and Haemophilus influenzae are some of the common causes of pink eye.

    People who experience allergic pink eye might face it due to allergens like pollen or dust.

    Doctors often suggest antibiotic eye drops to treat bacterial pink eye, while hygiene is the best option for viral Conjunctivitis.

    Some people might find cold compresses and rinsing one’s eyes constantly beneficial for allergic pink eye.

    If you are constantly experiencing symptoms of pink eyes, it is best to consult your doctor immediately.

    Order Now
    Are pink eyes due to allergies proving to be a hindrance? Use Ocurest 10 ml to treat the allergies and get relief from allergic pink eye today!

    Frequently Asked Questions

    What are the main causes of pink eye?

    A person may experience pink eye due to three main causes. These causes include viruses, bacteria, and allergies. Some individuals might experience pink eye due to chemical particles, smoke, or foreign bodies in the eyes.

    What bacteria causes pink eye?

    According to the Centres for Disease Control and Prevention (CDC), bacteria like Staphylococcus Aureus, Streptococcus Pneumoniae, Haemophilus Influenzae, and Moraxella Catarrhalis cause bacterial pink eye.

    How can you get rid of pink eye?

    If you are experiencing pink eye, it is important to keep your eyes clean to ensure no further infections happen. Putting on cold compresses and improving hygiene may also be beneficial. Doctors might suggest antibiotic eye drops to treat the bacterial infection causing the pink eye.

    How long does pink eye last?

    Under usual circumstances, pink eye in a person might last from 7 to 14 days without any treatment. However, it might take up to 3 weeks to fully cure in severe cases.

    Can pink eye cause a fever?

    Yes, pink eye may cause a fever in an individual. In most cases, a person with viral Conjunctivitis might experience a sore throat, runny nose, and a fever, indicating that the infection has affected other parts of a person besides the eyes.

    Cheap Medicine Shop only refers to credible, authoritative sources for our content. If you’re curious about how we ensure the integrity of our content, we encourage you to read our Content Information Policy.

    How useful was this post?

    Click on a star to rate it!

    Average rating 4.7 / 5. Vote count: 185

    No votes so far! Be the first to rate this post.

    Photo of author Janet Fudge
    Janet Fudge is a highly skilled and experienced pharmacologist who serves as a contributing writer for With a strong academic background from a premier US University and a passion for helping others, Janet has become a trusted voice in the pharmaceutical world. After completing her Doctor of Pharmacy degree, Janet embarked on a successful career in the pharmaceutical industry, working with various clients, including hospitals, retail pharmacies, and drug manufacturers. Her in-depth knowledge of pharmacology and dedication to patient-centered care has led her to excel in her field. As a writer for, Janet uses her wealth of expertise to provide readers with accurate, reliable, and up-to-date information on various topics related to medicine and healthcare. Her engaging writing style and ability to break down complex topics into easily digestible content make her a valuable resource for healthcare professionals and the general public.
    Please enable JavaScript in your browser to complete this form.

    We’d Love To help

    Reach out to us we will get back to you

    Preferable Time