Conjunctivitis: What it is, Causes, Symptoms, Treatment & Types

What is Conjunctivitis?

Conjunctivitis is a condition when the eyes conjunctiva gets inflamed or infected. The conjunctiva is a thin, transparent membrane covering the white part of the eye and lines the inside of the eyelids. When it becomes irritated or infected, the tiny blood vessels in it swell and become more visible, making the eye appear red or pink. The condition can affect one or both eyes and may be caused by viruses, bacteria, allergies, or irritants.

What are the Types of Conjunctivitis?

The different types of conjunctivitis are as follows:

How Common is Conjunctivitis In India?

Conjunctivitis is a very common eye infection in India, especially during the monsoon and after the rains. In 2023, many states saw a major increase in cases because the humid weather helped viral infections spread.

Maharashtra had about 30% of the reported cases, followed by Gujarat with 21%, and then Delhi, Himachal Pradesh, and Karnataka, each with about 4%. Data from the outbreak showed that conjunctivitis was more common in men than in women, and it was reported more often in cities.

What are the Symptoms of Conjunctivitis?

Symptoms of conjunctivitis vary depending on what is causing the inflammation. Some common symptoms include:

• Eye Redness: Inflammation of the conjunctiva causes the blood vessels in the eye to become more visible, giving the eye a pink or red appearance.

• Eye Discharge: Conjunctivitis can cause watery, mucus-like, or thick discharge. In bacterial infections, the discharge is often yellow, green, or white.

• Gritty or Foreign Body Sensation: Many people feel as though sand, dust, or another foreign object is trapped in the eye.

• Itching, Irritation, or Burning: The eyes may feel itchy, irritated, or develop a burning sensation, particularly in allergic conjunctivitis.

• Blurred Vision: Temporary blurred vision can happen if there is too much tearing or if discharge covers the surface of the eye.

• Mild Eye Pain or Discomfort: Although conjunctivitis is usually not severely painful, some people may experience mild soreness or discomfort in the affected eye.

• Light Sensitivity (Photophobia): Some people may feel discomfort or irritation in bright light, which can make it hard to read or spend time outside.

What Causes Conjunctivitis?

The causes depend on the type of conjunctivitis. Check out the causes of Infectious and Non-Infectious Conjunctivitis below:

What are the Complications of Conjunctivitis?

Although most cases resolve without lasting damage, complications can occur in severe or untreated cases.

• Trachoma: It is caused by the bacterium Chlamydia trachomatis, serotypes A, B, Ba, and C. , It is a chronic condition that may cause scarring of the eyelids and vision loss over time. These are rampant in areas with severe water and sanitary deficits.

• Uveitis: Inflammation of the uvea, the middle layer of the eye, due to an untreated corneal infection. It can cause pain, redness, blurred vision, and light sensitivity.

• Recurrent Corneal Erosions: Damage to the corneal surface can cause repeated episodes of pain, tearing, and sensitivity to light due to the recurring breakdown of the outer corneal layer.

• Corneal Inflammation (Keratitis): Corneal inflammation, also called keratitis, happens when infection or inflammation spreads to the cornea. This can affect vision and raise the risk of more serious eye problems.

• Keratoconjunctivitis: Keratoconjunctivitis is when both the conjunctiva and the cornea become inflamed. This often causes discomfort and problems with vision.

• Corneal Ulcers: Severe infections can sometimes cause open sores on the cornea. Corneal ulcers require immediate medical attention as they may lead to permanent vision impairment.

When Should I See My Doctor?

While most cases of conjunctivitis improve on their own or with simple treatment, certain symptoms may require prompt medical attention. You should see a healthcare provider if you experience:

• Severe eye pain, as conjunctivitis typically causes irritation rather than significant pain.

• Blurred vision that does not improve after clearing eye discharge or any noticeable loss of vision.

• Increased sensitivity to light, especially if it interferes with daily activities.

• Symptoms that persist for more than one to two weeks despite treatment.

• Thick yellow or green pus-like discharge from the eye.

• Redness or irritation following an eye injury or exposure to chemicals.

• Recurrent episodes of conjunctivitis keep returning.

How is Conjunctivitis Diagnosed?

Diagnosis is usually based on past medical history, symptoms and an eye examination.

How is Conjunctivitis Managed?

Treatment for conjunctivitis depends on the cause. Some cases may require medications such as

• Antiviral Medications: Antiviral medicines may be prescribed when the infection is caused by certain viruses, such as herpes simplex virus or varicella-zoster virus (chickenpox and shingles), which carry a higher risk of complications.

• Antibiotics: Bacterial conjunctivitis may be treated with antibiotic eye drops, ointments, or oral medications to eliminate the infection and reduce symptoms.

• Antifungal or Antiparasitic Medications: In rare cases where conjunctivitis is caused by fungal or parasitic infections, specific antifungal or antiparasitic medications may be required.

• Allergy Medications: Allergic conjunctivitis can be managed with antihistamines, decongestants, lubricating eye drops, or other allergy medications that help reduce inflammation and irritation.

Conjunctivitis During Pregnancy

If you get conjunctivitis during pregnancy, it is usually treated safely with supportive care and medicines that are safe for pregnancy, as prescribed by your doctor. Pregnant women should not use eye drops on their own and should talk to a doctor if symptoms do not go away. Common management approaches include:

• Artificial tears can help soothe dry, irritated eyes and provide temporary relief from discomfort.

• Applying a cold compress to the eyes may reduce redness, swelling, and irritation.

• Maintaining good eye hygiene, including frequent handwashing and avoiding eye rubbing, can help prevent the spread of infection.

• If a bacterial infection is present, a healthcare provider may prescribe antibiotic eye drops that are considered safe during pregnancy.

• Avoiding allergens and irritants such as pollen, dust, smoke, and chemicals can help minimise symptoms and prevent further eye inflammation.

What is the Prognosis for Conjunctivitis?

The outlook for conjunctivitis is excellent. Viral conjunctivitis usually resolves within one to three weeks without permanent damage. Bacterial conjunctivitis often improves within a few days of starting antibiotics.

TAllergic conjunctivitis may recur if exposure to allergens continues, but symptoms can usually be controlled with appropriate treatment and avoidance measures. Serious complications and permanent vision loss are uncommon when timely medical care is received.

Can Conjunctivitis Be Cured?

Yes, in most cases, conjunctivitis can be fully treated, and symptoms go away without causing lasting eye damage. Viral infections usually clear up on their own, bacterial infections respond well to antibiotics, and allergic conjunctivitis gets better when you avoid allergens and use the right medicine. Getting diagnosed early and following the right treatment can help prevent problems and speed recovery.

How Can I Prevent Conjunctivitis?

There are several ways to help prevent conjunctivitis, such as the following:

• Wash your hands frequently, especially before touching your eyes.

• Do not share towels, pillows, or personal cosmetics with others.

• Clean contact lenses properly and follow recommended hygiene practices.

• Replace old eye makeup regularly to reduce the risk of contamination.

• Avoid close contact with infected individuals whenever possible.

• Protect eyes from smoke, chemicals, dust, and other irritants.

• Manage allergies effectively by avoiding known allergy triggers.

Does Health Insurance Cover Conjunctivitis?

Yes, health insurance plans may cover treatment for conjunctivitis, depending on your policy. Since most cases of conjunctivitis are treated on an outpatient (OPD) basis, coverage is generally available only if your plan includes OPD benefits. Such plans may help cover doctor consultations, diagnostic tests, and prescribed medicines.

TIf conjunctivitis leads to complications requiring hospitalisation, the associated inpatient expenses are usually covered as per the policy terms. Coverage for acute conjunctivitis typically begins after the standard 30-day initial waiting period. However, if the condition is related to a pre-existing eye disorder, the applicable PED waiting period will apply.

How Much Health Insurance Coverage is Needed for Conjunctivitis Treatment?

Conjunctivitis is usually a minor eye infection and is often treated through doctor consultations, eye drops, and medicines, without the need for hospitalisation. While the cost of treatment is generally low, a health insurance plan with coverage of up to ₹5 lakh can help cover unexpected medical expenses if complications arise or if you need treatment for other health conditions.