What is Viral Conjunctivitis? What Are Its Symptoms? How Is It Diagnosed and Treated?

Adenoviral conjunctivitis is the longest-lasting and most severe type of contagious eye infection. Due to the virus's ability to survive on surfaces for weeks, the risk of transmission is quite high. It generally occurs in the form of outbreaks during the winter and spring months.

Although the symptoms of viral conjunctivitis are uncomfortable, most cases resolve within 1 week to 10 days. In this article, you will find answers to questions about adenoviral conjunctivitis symptoms, diagnostic methods, adenoviral conjunctivitis treatment, and how to recover from adenoviral conjunctivitis. We will also discuss methods of prevention in detail.

What Is Viral Conjunctivitis?

Viral conjunctivitis is an eye infection caused by the infection of the conjunctiva, the membrane covering the outer surface of the eye, by viruses. The most common cause is adenoviruses.

Adenoviral conjunctivitis leads to inflammation of the eyelids and the white of the eye. It manifests with symptoms such as redness, watering, itching, burning, and a gritty sensation in the eye. Unlike bacterial types, adenoviral types present with a more watery and clear discharge rather than a thick yellow-green discharge.

Conjunctiva and Eye Structure

The conjunctiva is a transparent membrane layer that covers the white part of the eye (sclera) and the inner surface of the eyelids. This membrane acts as a protective layer covering the eye surface.

Conjunctivitis, which is an infection of the conjunctiva, is one of the most common causes of red eye. When a virus infects this membrane, a sensitive and inflamed eye condition occurs.

What Is Adenovirus?

Adenovirus is among the double-stranded DNA viruses. There are more than 50 types of adenoviruses that cause infection in humans. Each can cause different diseases.

These viruses infect mucous membranes. They cause many different clinical pictures, ranging from respiratory tract infections to eye infections, digestive system disorders, and bladder infections. Among the most common infections are upper respiratory tract infections and conjunctivitis.

Adenoviruses are highly resistant to the external environment. They can remain alive for a long time on door handles, towels, or surfaces. Because of this feature, they can cause outbreaks in institutional settings such as schools and hospitals.

Types of Viral Conjunctivitis

Among viral conjunctivitis, the adenoviral type is the most significant. It causes intense redness, swelling, crusting, and light sensitivity. The patient may even have difficulty opening their eye.

Viral infections affecting the nose and throat during colds and flu can also cause conjunctivitis. It manifests as mild watering, redness, and light sensitivity in the eyes. Herpes virus can also cause conjunctivitis. These viral types resolve with anti-inflammatory drops and, if necessary, the use of antiviral ointment.

Adenoviral conjunctivitis, however, can last for 4-6 weeks. In severe cases, corneal involvement can last for months.

What Are the Symptoms of Viral Conjunctivitis?

Adeno-conjunctivitis symptoms usually start suddenly and can be at a level that challenges the patient in their daily life. Depending on the type of virus and the body's resistance, different symptoms ranging from mild to severe can be seen.

Physical Symptoms in the Eye

The most prominent symptom that appears in the eye is intense redness. Due to inflammation, the eye vessels swell and edema occurs. The redness is so pronounced that cases causing panic among patients due to subconjunctival hemorrhages can be seen.

Swelling of the eyelids begins in the early stages of the disease. The swelling usually starts in one eye and quickly spreads to the other. Punctate hemorrhages and dirty yellow membranes called pseudomembranes may form on the inner surface of the eyelids.

Excessive watering and crusting are seen in the eye. The discharge in viral infections is clear or slightly yellow. Sticking of the eyelids in the mornings and difficulty opening them may be experienced. Swelling of the preauricular lymph nodes is also frequently seen.

Pain and Discomfort

Grittiness, burning, and a sensation of having sand in the eye are among the symptoms of adenoviral conjunctivitis. The severity of the discomfort varies from person to person. While some patients have mild soreness, others experience severe pain.

The patient may even have difficulty opening their eye. This situation can prevent them from continuing their daily life, going to work, and driving. Discomfort increases, especially when membranes form on the inside of the eyelid.

Symptoms Related to Vision

Light sensitivity is a common symptom seen in all adenoviral conjunctivitis cases. This sensitivity increases even more, especially outdoors in sunlight. An inability to look at bright light occurs.

Blurred vision or haziness in vision may be experienced. Visual disturbances may be a harbinger that the inflammation has spread to the corneal section. Therefore, symptoms related to vision should be taken seriously.

The Process of Symptom Onset

After transmission with the virus, there is an incubation period of 4-7 days. Afterward, symptoms appear suddenly. The disease starts in one eye first and quickly spreads to the other.

Symptoms usually worsen in the first 3-5 days. Most patients see improvement within 1 week to 10 days. The average duration of the disease is 2-4 weeks. In children, fever, sore throat, and runny nose may also be seen.

Corneal Spots and Complications

7-10 days after the onset of symptoms, white spot-like lesions may form on the transparent layer of the eye in 30-80% of patients. These spots are called subepithelial infiltrates.

Corneal spots cause blurred vision and light sensitivity. While the spots may pass within a few weeks, they lead to significant vision loss if they are more intense. Their reduction or disappearance can take months or even years. The person needs to be under the supervision of an ophthalmologist during the course of the disease. Otherwise, permanent vision loss may occur.

How Is Viral Conjunctivitis Diagnosed?

Diagnosis by Eye Examination

Diagnosis is usually made by an ophthalmologist based on the symptoms during the examination without the need for any tests. Your doctor will examine your eyes and ask you questions about your symptoms and medical history.

First, the patient's detailed history and complaints are taken. Conjunctivitis can be diagnosed by the ophthalmologist's biomicroscopic examination. The symptoms seen in the patient and the clinical picture are evaluated.

The distinction between viral, bacterial, or allergic conjunctivitis is also made by the doctor. Clinical diagnosis of viral infections of the eye surface such as viral conjunctivitis and keratitis is not easy and can be confused with bacterial infections. Therefore, an examination by an experienced ophthalmologist is required.

PCR Test and Rapid Test Methods

If there is doubt about the diagnosis, PCR testing and rapid test methods from eye swabs and tears can be utilized. A sample of eye discharge can be taken for laboratory analysis to determine the underlying cause of the infection.

A multiplex PCR is recommended for the detection of adenovirus, herpes simplex virus, and chlamydia trachomatis in swabs for patients suspected of having viral or chlamydial conjunctivitis. PCR tests are used to detect the DNA of pathogens such as adenovirus and HSV and are highly reliable.

Multiplex PCR has 98% sensitivity for adenovirus, 92% for HSV, and 100% for Chlamydia. Although the sensitivity of PCR in detecting the causative agent is higher in corneal scrapings compared to tear samples, tear samples can be used in cases where corneal scraping is not possible.

Rapid test platforms such as AdenoPlus offer practical and fast results in adenovirus detection. These tests can be applied quickly in a clinical setting and provide results in a short time. However, although these rapid tests provide high specificity, they may not be as sensitive as PCR.

If symptoms do not improve within a few weeks or the condition worsens, laboratory tests may be required. Laboratory tests are recommended especially in cases of suspected chlamydial infection in newborns, patients with weakened immune systems, cases with abnormally intense eye discharge, and suspected gonorrhea infection.

When to See a Doctor?

If you have symptoms of adenoviral conjunctivitis in your eye, especially if there is blurred vision, it is recommended that you consult an ophthalmologist immediately. Early treatment prevents more serious problems.

If symptoms such as eye crusting, discharge, blurred vision, and light sensitivity are accompanied, it is necessary to consult an ophthalmologist quickly. If the diagnosis is not made correctly and recovery is not achieved, different complications may arise in the eye.

In cases of eye inflammation seen in newborns, it must be treated urgently. Newborn babies are particularly vulnerable to germs that may come from the birth canal, and these germs can lead to serious consequences.

How Is Viral Conjunctivitis Treated?

Course of the Disease and Recovery Time

In the treatment of adenoviral conjunctivitis, the body's own defense system is relied upon. It is necessary to wait until the immune system defeats the virus. This process takes an average of 7-14 days.

The recovery time depends on the person's immune status, the severity of the infection, and the effectiveness of the treatment. In mild viral types, symptoms may pass in 4-5 days. However, in adenoviral conjunctivitis cases, recovery can take up to 3-4 weeks even with medication.

Most patients see improvement within 1 week to 10 days. In cases of severe infections or complications, symptoms may last longer. If there is corneal involvement, recovery may take a little longer.

Treatment Options

Viral conjunctivitis usually does not require specific treatment. The disease is mild and tends to resolve on its own. Treatment is aimed more at alleviating symptoms.

Cold compresses can be applied to relieve discomfort in the eye. Artificial tear drops reduce dryness and discomfort in the eye. These methods should be used regularly to relieve the patients' complaints.

Special attention should be paid to hygiene. Supportive medication can be applied to soothe the eye surface and prevent the addition of other germs.

Use of Antiviral and Antibiotic Drops

Antibiotics have no effect on viruses. Therefore, antibiotic drops do not treat viral conjunctivitis. However, in some cases, antibiotic eye drops may be used to help prevent secondary bacterial infection.

In some cases, antiviral eye drops can be used. Especially in conjunctivitis caused by the herpes virus, the use of antiviral ointment is required.

In the early stages, specially prepared antiseptic drops, anti-inflammatory drops, and antibiotic drops are used. On the other hand, the use of cortisone drops in the early stage prolongs the duration of the disease. At this stage, the membranes formed on the inner surface of the eyelids also need to be cleaned.

Treatment of Corneal Spots

In the final stages of the disease, corneal involvement occurs. Small round white spots form on the cornea. At this stage, it is necessary to use cortisone drops.

Corneal spots cause blurred vision and light sensitivity. Even if there is corneal involvement, most patients recover without any sequelae. It is recommended to consult an ophthalmologist for the treatment of corneal spots due to adenoviral conjunctivitis.

For the treatment to be correct and effective, the appropriate treatment option will be determined according to the severity of the symptoms. With early treatment, more effective and faster treatment of the infection, reduction of the virus's contagiousness, and prevention of complications are ensured.

Treatment Approach in Children

Adenovirus infections are common in children and are very contagious. The treatment approach is similar to adults, but there are some differences.

Although treatment is generally not needed, antiviral eye drops can be used in some cases. Additional symptoms such as fever, sore throat, and runny nose may be seen in children. In this case, supportive treatments are applied.

Attention should be paid to eye hygiene and hands should be washed frequently. Drops prescribed by the doctor should be used regularly. Sometimes ointment or eye drops may be prescribed.

Viral Conjunctivitis Transmission and Prevention Methods

Ways of Transmission

Adenoviral conjunctivitis is a highly contagious disease. It easily passes from one person to another through contact. Hands, surfaces, and items that come into contact with the infected person's eye discharge become a source of transmission.

Transmission occurs through contact with virus particles suspended in the air. Droplets spread during sneezing and coughing can spread the infection. It can easily be transmitted even from a close environment. Because the virus can remain on surfaces it has contaminated for weeks, the probability of transmission to people increases.

Those who come into contact with the infected person's eye discharge or touch surfaces contaminated with this discharge can catch the infection. It spreads easily through tears or hands that touch the eye. It can be transmitted through the shared use of personal items such as towels, forks, spoons, and eye cosmetics.

Duration of Contagiousness

A person who catches the virus begins to spread the virus before showing symptoms. Contagiousness can begin before symptoms start and can continue for up to 2 weeks. The person's viral contagiousness continues for the following 2 weeks.

Contagiousness lasts for about 10-14 days. The fact that transmission can occur through the air can lead to all individuals in the house becoming infected after one family member catches the disease from outside. When one of the family members catches viral conjunctivitis, usually all family members catch this disease in turn.

Hygiene Rules and Precautions

Hand hygiene is the most important rule. Hands need to be cleaned and disinfected at certain intervals throughout the day. Avoiding touching the inside and around the eye with dirty hands is important for protection against the disease.

It is necessary to avoid contact with infected people. It is of great importance not to share personal items such as towels, napkins, makeup materials, and other cosmetic products. Patients should avoid touching their eyes because this is important for transmission to the other eye and other family members.

Disinfection of frequently and commonly used surfaces prevents the spread of the virus. Items such as tables, counters, phones, and remote controls need to be cleaned at regular intervals. It should be ensured that the mouth is covered with hands while coughing or sneezing and that hands do not come into contact with the eyes.

Transmission and Prevention in Children

Adenovirus infections are common in children and are very contagious. The infection is transmitted through tears, sneezing, coughing, surface contact, or failure to properly implement hygiene rules. Children usually catch the infection in schools, playgrounds, or places where they are in groups.

It is recommended that children follow hygiene rules and not rub their eyes. It is important for sick children to stay at home and not be sent to school to prevent other children from catching the infection. A child with contagious conjunctivitis should not be sent to school for the duration recommended by the doctor.

Environments at Risk

Adenoviral conjunctivitis is seen in the form of outbreaks in places where people are in close contact. The areas where it is most frequently seen are schools, kindergartens, military barracks, crowded workplaces, and hospitals.

Swimming pools are a suitable environment for the spread of the infection. Entering pools whose cleanliness is not certain can lead to virus transmission. Individuals with eye infections should avoid entering the pool. Avoiding crowded environments and public transport as much as possible is also among the precautions that can be taken.

Frequently Asked Questions

Patients ask many questions about adenoviral conjunctivitis. We have answered the most frequently wondered topics.

How long will it take for me to recover?

In mild cases, symptoms decrease within 4-5 days. However, adenoviral conjunctivitis usually lasts 2-4 weeks. If there is corneal involvement, recovery may take several months. You need to wait until your body's immune system defeats the virus.

When can I return to work or school?

You are contagious for 10-14 days after the onset of symptoms. It is recommended that you stay at home until your eye discharge and redness decrease. You should not return to crowded environments without your doctor's approval.

Do I need to use antibiotics?

Antibiotics are ineffective against viruses. Therefore, antibiotic drops do not provide benefit in viral conjunctivitis. Your doctor may prescribe antibiotics only if there is a risk of secondary bacterial infection. You should not use antibiotics on your own.

Does the disease go away on its own?

Yes, viral conjunctivitis heals on its own. Your body's immune system fights the virus and the symptoms disappear over time. On the other hand, you can use supportive treatments to reduce your discomfort. Cold compresses and artificial tear drops help.

Can I wear contact lenses?

No, do not wear contact lenses during the disease. Lenses can worsen the infection and lead to corneal damage. You need to use glasses until you recover. It is also recommended to start with new lenses.

Can I wear eye makeup?

Avoid eye makeup during the infection. Makeup materials carry the virus and can transmit the infection to the other eye. Also, you need to throw away the makeup products you use. It is safer to start with new products.

What is the difference from bacterial conjunctivitis?

In viral types, the discharge is clear and watery. In bacterial types, thick yellow-green discharge is seen. Viral conjunctivitis lasts longer and is more contagious. Treatment approaches are also different because bacterial types are treated with antibiotics.

What should I do to not transmit it to my family?

Wash your hands frequently and do not touch your eyes. Do not share your towel and pillowcase. Disinfect surfaces regularly. Try not to sleep in the same room as your family members.

In Summary, Viral Conjunctivitis

Although viral conjunctivitis is an annoying disease, it often heals on its own. Your symptoms will decrease within a week to 10 days.

The most effective way to protect against the disease is to follow hygiene rules. Wash your hands frequently, do not touch your eyes, and do not share your personal items.

Consult an ophthalmologist immediately when redness, discharge, and blurred vision begin in your eye. With the correct diagnosis and appropriate treatment, you can prevent complications. Do not use antibiotic drops yourself because they are ineffective against viruses.

Stay away from crowded environments until the symptoms pass and thus prevent the spread of the virus.

Adenoviral conjunctivitis manifests with symptoms such as redness, watering, and itching in the eye. Read our article for detailed information about treatment and prevention methods.