Pink Eye and Conjunctivitis

 

Pink Eye and Conjunctivitis Treatment in Princeton & Lawrenceville, NJ

Pink eye, also called conjunctivitis, is irritation or inflammation of the thin clear layer that covers the white part of the eye and the inside of the eyelids. It can make the eye look red or pink.

Pink eye can be caused by viruses, bacteria, allergies, irritants, contact lens problems, or something in the eye. Some types are contagious. Others are not. Treatment depends on the cause.

Patients often notice redness, watery eyes, itching, burning, discharge, crusting, or the feeling that something is in the eye. Many cases are mild, but some eye symptoms need prompt evaluation, especially pain, light sensitivity, blurred vision, intense redness, trauma, chemical exposure, or symptoms in a contact lens wearer.

For patients in Princeton, Lawrenceville, West Windsor, Plainsboro, Hopewell, Pennington, Robbinsville, and nearby Mercer County communities, the goal is to identify whether symptoms are likely viral, bacterial, allergic, irritant-related, or something more urgent.

This page is educational. It can help you understand symptoms, treatment options, prevention, return-to-school/work considerations, and when to schedule an evaluation.

QUICK TAKEAWAYS

• Pink eye can be viral, bacterial, allergic, irritant-related, or related to contact lenses or a foreign body.
• Viral and bacterial pink eye can be contagious.
• Watery discharge with cold symptoms often suggests viral conjunctivitis.
• Thick pus-like discharge or eyelids stuck shut may suggest bacterial conjunctivitis.
• Intense itching in both eyes with sneezing or allergies often suggests allergic conjunctivitis.
• Antibiotic drops do not help viral pink eye and are not needed for every red eye.
• Contact lens wearers with red or painful eyes should stop wearing contacts and be evaluated promptly.
• Eye pain, light sensitivity, blurred vision, intense redness, chemical exposure, trauma, or a newborn with pink eye symptoms should be evaluated urgently.
• If red eye symptoms are persistent, worsening, confusing, or affecting school, work, or daily life, schedule an evaluation with Princeton Sports and Family Medicine, P.C. or start here: Request Appointment.

WHO THIS AFFECTS + WHY IT HAPPENS

Who gets pink eye?

Pink eye can affect children, teens, adults, athletes, contact lens wearers, parents, teachers, healthcare workers, and anyone exposed to respiratory viruses, allergens, or eye irritants.

Common groups include:

• Children in school or daycare
• Parents and caregivers
• Teachers and childcare workers
• People with recent colds or upper respiratory infections
• People with seasonal allergies
• Contact lens wearers
• Swimmers exposed to irritants
• Patients with sinus or allergy symptoms
• People exposed to smoke, chemicals, dust, or pollen
• People who touch or rub their eyes frequently
• People sharing towels, eye makeup, or close household space

Why it happens

Pink eye happens when the conjunctiva becomes irritated or inflamed.

Common causes include:

• Viral infection
• Bacterial infection
• Seasonal or environmental allergies
• Chemical irritants
• Smoke, dust, chlorine, or pollution
• Contact lens irritation or infection risk
• Foreign body in the eye
• Eye makeup or cosmetic irritation
• Respiratory infections that spread to the eyes

The treatment depends on the cause. That is why it is important not to assume every red eye needs antibiotic drops.

SYMPTOMS + WHAT’S NORMAL VS NOT

Common symptoms

Pink eye may affect one eye or both eyes.

Symptoms may include:

• Pink or red color in the white of the eye
• Watery or teary eyes
• Itching
• Burning
• Irritation
• Gritty feeling
• Swollen eyelids
• Crusting on lashes, especially in the morning
• Clear, white, yellow, or green discharge
• Eyelids stuck together after sleep
• Sensitivity from irritation
• Symptoms with cold, sinus, or allergy symptoms
• Contact lenses feeling uncomfortable or not fitting normally

Clues by type

Viral pink eye often causes watery discharge. It may occur with a cold, sore throat, cough, or upper respiratory infection. It may start in one eye and spread to the other.

Bacterial pink eye may cause thicker discharge or pus. The eyelids may stick together, especially in the morning. It may occur with an ear infection in children.

Allergic pink eye often affects both eyes. It usually causes intense itching, tearing, swelling, sneezing, itchy nose, scratchy throat, or other allergy symptoms.

Irritant-related pink eye may occur after smoke, chemicals, chlorine, dust, or foreign body exposure.

Contact lens-related red eye needs extra caution because contact lens wearers have a higher concern for corneal irritation or infection.

What can be monitored briefly

Mild red eye with watery discharge and cold symptoms can sometimes be monitored briefly if symptoms are improving, vision is normal, pain is minimal, and there is no light sensitivity.

Early steps may include:

• Avoid rubbing the eye
• Wash hands frequently
• Use artificial tears if helpful
• Use a cool compress for irritation
• Avoid sharing towels, pillowcases, or makeup
• Stop eye makeup temporarily
• Keep children home if symptoms are heavy and contagious risk is high
• Avoid contact lenses until symptoms fully resolve or an eye clinician clears you

Schedule a visit if…

A scheduled evaluation is appropriate if:

• Symptoms are not improving
• Symptoms are worsening
• Thick discharge or pus is present
• Eyelids are repeatedly stuck shut
• Fever or ear pain is present
• Symptoms involve a young child
• You are unsure whether this is viral, bacterial, allergic, or irritant-related
• You need guidance about school, work, or antibiotics
• Symptoms recur frequently
• Allergy symptoms are significant
• You have a weakened immune system
• You wear contact lenses and have redness, irritation, or discharge

Seek urgent care now if…

Seek urgent or prompt medical evaluation if you have:

• Eye pain
• Light sensitivity
• Blurred vision that does not clear after wiping discharge
• Intense eye redness
• Chemical exposure
• Eye trauma
• Foreign body sensation that does not improve
• Contact lens use with eye pain, redness, or light sensitivity
• Swelling or redness around the eye
• Fever with significant eye swelling
• Severe headache, nausea, vomiting, or vision symptoms
• Newborn with red, watery, or draining eye
• Symptoms that rapidly worsen

These symptoms may suggest something more serious than routine conjunctivitis.

DIAGNOSIS

Pink eye is usually diagnosed with history and physical exam.

What history matters?

Your clinician may ask:

• When symptoms started
• Whether one or both eyes are affected
• Whether discharge is watery or thick
• Whether the eye itches, burns, or hurts
• Whether vision is blurred
• Whether light causes pain
• Whether you wear contact lenses
• Whether you had a recent cold, cough, sore throat, sinus symptoms, or fever
• Whether allergies are active
• Whether there was chemical exposure, trauma, or foreign body exposure
• Whether others at home, school, or work have similar symptoms
• What drops or treatments you have already tried
• Whether symptoms have happened before

What the exam may include

A typical evaluation may include:

• Eye appearance
• Eyelid swelling
• Type of discharge
• Vision check when needed
• Pupil response when concerning symptoms are present
• Assessment for light sensitivity
• Exam of ears, nose, throat, and lymph nodes when relevant
• Review of allergy or respiratory symptoms
• Contact lens history
• Screening for urgent red flags

If pain, vision change, light sensitivity, trauma, or contact lens complications are present, an eye specialist or urgent eye evaluation may be needed.

When testing may be considered

Testing is not usually needed for straightforward mild conjunctivitis.

Testing or referral may be considered when:

• Symptoms are severe
• Symptoms do not improve as expected
• The diagnosis is unclear
• Contact lens-related infection is possible
• Newborn conjunctivitis is present
• Unusual infection is suspected
• There is recurrent or persistent discharge
• Vision is affected
• Corneal injury or foreign body is possible

Testing should be used when it changes the plan.

TREATMENT OPTIONS

Treatment depends on the likely cause.

Viral pink eye

Viral pink eye is common and often occurs with a cold or upper respiratory infection.

Treatment usually focuses on symptom relief:

• Cool compresses
• Artificial tears
• Handwashing
• Avoiding eye rubbing
• Avoiding shared towels and pillowcases
• Staying home when symptoms are heavy and contagious risk is high
• Avoiding contact lenses until symptoms resolve
• Avoiding unnecessary antibiotic drops

Antibiotics do not help viral pink eye.

Bacterial pink eye

Bacterial pink eye may cause thicker discharge or pus.

Treatment may include:

• Hygiene measures
• Warm or cool compresses based on comfort
• Cleaning crusting gently with clean water
• Antibiotic eye drops or ointment in selected cases
• Follow-up if symptoms do not improve

Antibiotics may be more appropriate when there is pus-like discharge, immune suppression, concern for certain bacteria, or a need to reduce complications or spread based on the clinical situation.

Allergic pink eye

Allergic conjunctivitis is often itchy and affects both eyes.

Treatment may include:

• Reducing allergen exposure
• Avoiding eye rubbing
• Artificial tears
• Cool compresses
• Oral allergy medication when appropriate
• Allergy eye drops when appropriate
• Treating related nasal allergy symptoms

Antibiotics do not help allergic pink eye.

Irritant-related pink eye

Irritant symptoms may occur after exposure to smoke, chemicals, chlorine, dust, or foreign material.

Treatment may include:

• Removing the exposure
• Rinsing the eye with clean water or sterile saline when appropriate
• Artificial tears
• Avoiding rubbing
• Medical evaluation if pain, vision change, or chemical exposure occurred

Chemical exposure to the eye should be treated urgently.

Contact lens-related red eye

Contact lens wearers should be cautious.

General guidance:

• Stop wearing contact lenses when the eye is red, painful, draining, or irritated
• Do not restart lenses until symptoms fully resolve or an eye clinician clears you
• Use glasses temporarily
• Replace or disinfect lenses and lens case as instructed
• Avoid using old lenses, old cases, or contaminated solution
• Seek prompt evaluation for pain, light sensitivity, vision change, or significant redness

Contact lens-related infections can involve the cornea and may become serious.

Medications

Medication choices should be individualized based on:

• Cause of symptoms
• Age
• Pregnancy status when relevant
• Contact lens use
• Allergy history
• Medication list
• Immune status
• Severity and duration of symptoms
• School or work requirements
• Eye pain, vision change, or light sensitivity

Avoid using someone else’s eye drops. Avoid steroid eye drops unless specifically prescribed by an appropriate clinician.

RETURN TO SCHOOL, WORK, SPORT, AND ACTIVITY GUIDANCE

Pink eye can affect school, work, childcare, contact sports, swimming, and daily activity.

Return to school or work

Return depends on symptoms, cause, setting, and local school or workplace policy.

General principles:

• Stay home if fever or significant systemic symptoms are present
• Stay home if eye discharge is heavy and hygiene cannot be maintained
• Avoid close contact while symptoms are active and contagious risk is high
• Wash hands frequently
• Avoid sharing towels, makeup, pillows, or eye drops
• Follow school, daycare, workplace, or public health guidance
• A clinician can help clarify return timing when needed

Sports and training

Most mild pink eye does not require stopping all exercise.

However, modify activity when:

• Vision is affected
• Light sensitivity is present
• Eye pain is present
• Contact lenses are needed but cannot be worn safely
• Symptoms are contagious and the sport involves close contact
• Swimming may irritate symptoms or expose others
• You also have fever, fatigue, cough, or respiratory symptoms

Contact sports

For wrestling, football, lacrosse, basketball, martial arts, or close-contact sports, contagious eye symptoms should be taken seriously. Athletes should avoid sharing towels, helmets, face shields, eye protection, or water bottles.

Return should follow team, school, and clinician guidance.

Swimming

Swimming can worsen irritation and may increase spread risk depending on the cause. Avoid swimming during active drainage, significant redness, pain, or uncertain diagnosis.

Common mistakes

• Assuming every red eye needs antibiotics
• Wearing contact lenses during active symptoms
• Using old contact lenses or contaminated cases after infection
• Sharing towels or eye makeup
• Rubbing the eye repeatedly
• Ignoring light sensitivity or blurred vision
• Using leftover drops from another person
• Using steroid drops without clinician guidance
• Sending a child to school when discharge is heavy and hygiene is difficult

PREVENTION

Pink eye prevention focuses on hygiene and reducing exposure.

Helpful steps include:

• Wash hands often
• Avoid touching or rubbing the eyes
• Avoid sharing towels, washcloths, pillowcases, or eye makeup
• Change pillowcases during active symptoms
• Clean glasses
• Avoid sharing eye drops
• Replace eye makeup if contaminated
• Follow contact lens hygiene carefully
• Do not sleep in contacts unless specifically prescribed
• Replace contact lens cases regularly
• Stay home when symptoms are heavy and contagious risk is high
• Manage seasonal allergies early
• Avoid known irritants when possible

For allergic conjunctivitis, prevention also includes reducing pollen, pet dander, dust, or other triggers when possible.

HOW PSFM CAN HELP

At Princeton Sports and Family Medicine, P.C., we evaluate red, itchy, watery, crusted, or draining eyes by first clarifying the likely cause. Pink eye may be viral, bacterial, allergic, irritant-related, contact lens-related, or part of another illness.

A visit may include a focused eye and eyelid exam, symptom review, contact lens history, allergy and respiratory symptom review, and screening for red flags such as eye pain, light sensitivity, vision change, trauma, chemical exposure, or severe redness.

For many patients, care includes symptom relief, hygiene guidance, return-to-school/work recommendations, and a decision about whether antibiotic drops are appropriate. If symptoms suggest a corneal problem, significant eye injury, or another urgent eye condition, referral to an eye specialist or urgent eye care may be recommended.

Depending on the situation, care may involve Primary Care Services.

Schedule an evaluation with Princeton Sports and Family Medicine, P.C. in Lawrenceville, NJ, or start here: Request Appointment.

FAQs

What is pink eye?

Pink eye, or conjunctivitis, is inflammation or irritation of the clear layer over the white part of the eye and inside the eyelids.

Is pink eye contagious?

Viral and bacterial pink eye can be contagious. Allergic and irritant-related pink eye are not usually contagious.

How can I tell if pink eye is viral or bacterial?

Viral pink eye often causes watery discharge and may occur with a cold. Bacterial pink eye may cause thicker discharge or pus and eyelids stuck shut. A clinician can help when the pattern is unclear.

Does pink eye always need antibiotics?

No. Antibiotics do not help viral or allergic pink eye. They may be used for selected bacterial cases.

What does allergic pink eye feel like?

Allergic pink eye often affects both eyes and causes intense itching, tearing, swelling, sneezing, itchy nose, or other allergy symptoms.

Should I wear contacts if I have pink eye?

No. Stop wearing contact lenses during active symptoms. Contact lens wearers with red or painful eyes should be evaluated promptly.

When is pink eye urgent?

Eye pain, light sensitivity, blurred vision, intense redness, chemical exposure, trauma, contact lens-related pain, or symptoms in a newborn should be evaluated urgently.

Can my child go to school with pink eye?

It depends on symptoms, fever, discharge, hygiene ability, and school policy. If symptoms are active and contagious risk is high, staying home may be appropriate. A clinician can help clarify timing.

Can pink eye happen with a cold?

Yes. Viral pink eye can occur with upper respiratory infection symptoms such as cough, sore throat, congestion, or fever.

Do you treat pink eye near Princeton and Lawrenceville?

Yes. Princeton Sports and Family Medicine, P.C. evaluates pink eye, red eye symptoms, allergies, and respiratory infections for patients from Princeton, Lawrenceville, West Windsor, Plainsboro, Hopewell, Pennington, Robbinsville, and nearby Mercer County communities.

RELATED CONDITIONS

Patients with pink eye or conjunctivitis symptoms may also want to learn about:

• Seasonal Allergies
• Allergic Rhinitis
• Upper Respiratory Infection
• Sinusitis
• Fever
• Sore Throat
• Headache

Because red, itchy, watery, or draining eyes can overlap with allergies, viral illness, sinus symptoms, fever, headache, contact lens irritation, or more serious eye conditions, a focused evaluation can help identify the most likely cause and guide the next step.

RELATED PSFM SERVICES

• Primary Care Services

Pink eye is common, but not every red eye is the same. Viral, bacterial, allergic, irritant-related, and contact lens-related eye symptoms need different plans. Some eye symptoms also need urgent evaluation, especially pain, light sensitivity, blurred vision, intense redness, trauma, chemical exposure, or symptoms in a contact lens wearer.

You do not need to guess whether symptoms need antibiotics, allergy treatment, supportive care, school/work guidance, or eye specialist evaluation. A focused visit can help clarify the safest next step.

Schedule an evaluation with Princeton Sports and Family Medicine, P.C. in Lawrenceville, NJ, or start here: Request Appointment.

MEDICAL DISCLAIMER

This page is for general education and does not replace medical advice. Symptoms can have more than one cause. If you have severe symptoms, rapidly worsening pain, chest pain, shortness of breath, one-sided weakness, uncontrolled bleeding, signs of serious infection, inability to bear weight after injury, or any urgent concern, seek immediate medical evaluation. Eye pain, light sensitivity, blurred vision, intense redness, chemical exposure, trauma, or contact lens-related red eye should be evaluated promptly.