Swelling of the eye, also referred to as periorbital puffiness, refers to the presence of excess fluid (edema) in the connective tissues around the eye, most commonly the eyelids. A swollen eye can result from
- trauma,
- infections, or
- other injuries to the eye area.
Other signs and symptoms can be associated with swelling of the eye, including
- excess tear production or discharge,
- eye irritation,
- eye redness,
- dry eyes, or
- obstructed or impaired vision, depending on the cause.
Prolonged crying, trauma, or eye injury is a common cause of swollen eyes. Virtually any cause of inflammation to the eye area may manifest as eyelid swelling, although allergic reactions are likely the most common cause. With allergic reactions, the eyes may also be red and itchy as well as swollen. Rarely, systemic conditions (affecting the entire body) may result in fluid retention, including fluid retention in the tissues around the eyes. With Graves' disease of the thyroid gland, proptosis or exophthalmos can occur. This means protrusion or bulging of the eyeball within the eye socket. Puffiness of the eyelids can also occur with this condition.
Other causes of swollen eyes
- Bacterial Infection
- Foreign Body in the Eye
- Medications
- Nephrotic Syndrome
- Prolonged Crying
- Trauma
- Tumors
- Viral Infection

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Causes of Swollen Eyes
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Allergy (Allergies)
An allergy refers to a misguided reaction by our immune system in response to bodily contact with certain foreign substances. When these allergens come in contact with the body, it causes the immune system to develop an allergic reaction in people who are allergic to it. It is estimated that 50 million North Americans are affected by allergic conditions. The parts of the body that are prone to react to allergies include the eyes, nose, lungs, skin, and stomach. Common allergic disorders include hay fever, asthma, allergic eyes, allergic eczema, hives, and allergic shock.
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Blepharitis
Blepharitis is inflammation of the eyelids. Acne rosacea, staphylococcal bacteria, allergies, sensitivities to makeup or contact lens solutions, head lice, or other conditions may cause blepharitis. Symptoms and signs include itchy eyelids, burning sensation in the eyes, crusting of the eyelids, light sensitivity, red, swollen eyelids, loss of eyelashes, and dandruff of the lashes and eyebrows. Proper eyelid hygiene and a regular cleaning routine controls blepharitis.
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Burns
Burn types are based on their severity: first-degree burns, second-degree burns, and third-degree burns. First-degree burns are similar to a painful sunburn. The damage is more severe with second-degree burns, leading to blistering and more intense pain. The skin turns white and loses sensation with third-degree burns. Burn treatment depends upon the burn location, total burn area, and intensity of the burn.
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Can an Optometrist Remove Foreign Bodies?
Some foreign bodies in the eye may be simple and go away on their own, whereas others require removal. Removal of foreign bodies from certain parts of the eye, such as the cornea, eyelid, or conjunctiva - with any appropriate instrument other than a scalpel or needle - can be performed by an optometrist as per the laws in the US.
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Cellulitis
Cellulitis is an acute spreading bacterial infection below the surface of the skin characterized by redness, warmth, inflammation, and pain. The most common cause of cellulitis is the bacteria staph (Staphylococcus aureus).
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Chagas Disease
Chagas disease is an infection caused by the T. cruzi parasite. Symptoms of Chagas disease include rash, swollen lymph nodes, fever, fatigue, nausea, vomiting, and the Romaña sign. An ELISA test is used to diagnose Chagas disease. Treatment depends upon the phase of the disease and the patient's age.
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Corneal Ulcer
A corneal ulcer is an open sore on the cornea. Infection is a common cause of corneal ulcer. Symptoms and signs of corneal ulcer include redness, eye pain and discharge, blurred vision, photophobia, and a gray or white spot on the cornea. Treatment depends upon the cause of the corneal ulcer.
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Does Retinoblastoma Cause Blindness?
Retinoblastoma is a cancer of the eye that begins in the retina. The retina is the light-sensitive lining inside the eye. Retinoblastoma most commonly affects young children and rarely occurs in adults. Retinoblastoma can affect vision and even lead to blindness.
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Edema (Pitting)
Edema is swelling caused by fluid accumulation in the tissues of the body and occurs most often in the legs, feet, ankles, or hands. Learn about different types, symptoms, causes, and treatment.
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Eye Allergy
Eye allergy (or allergic eye disease) are typically associated with hay fever and atopic dermatitis. Medications and cosmetics may cause eye allergies. Allergic eye conditions include allergic conjunctivitis, conjunctivitis with atopic dermatitis, vernal keratoconjunctivitis, and giant papillary conjunctivitis. Dry eye, tear-duct obstruction, and conjunctivitis due to infection are frequently confused with eye allergies. Eye allergies may be treated with topical antihistamines, decongestants, topical mast-cell stabilizers, topical anti-inflammatory drugs, systemic medications, and allergy shots.
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Eye Herpes
Herpes of the eye occurs due to herpes simplex virus-1 (HSV-1). Symptoms of herpes of the eye include pain in and around the eye, rash or sores on the eyelids, redness, swelling, and cloudiness of the cornea.
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Giardia Lamblia
Giardiasis (Giardia lamblia) is a parasite responsible for a common form of infectious diarrhea. The parasite lives in two stages: trophozoites and cysts. People at risk for giardiasis are those that live in areas where there is inadequate sanitation or treatment of drinking water. Giardiasis also is a common cause of outbreaks of diarrhea in day-care centers. Symptoms and signs of giardiasis include abdominal pain, stomach cramping, bloating, nausea, and fatigue. Treatment for giardiasis is with antibiotic medication.
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Hives (Urticaria)
Hives, also called urticaria, is a raised, itchy area of skin. Most often the cause of hives is unknown. Sometimes it is a sign of an allergic reaction to food or medications, but the cause of the allergy (the allergen) is unknown. Dermatographism and swelling (angioedema) may accompany hives. Treatment to get rid of hives and alleviate symptoms typically includes antihistamines.
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How Can I Get My Eye To Stop Twitching?
A blepharospasm (eye twitch) is a harmless, involuntary spasm of the muscle of the eyelids, which may resolve on its own. If the twitching isn't caused by an underlying condition, getting more rest and avoiding alcohol and caffeine may help stop it.
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Hyperthyroidism
Hyperthyroidism is an excess of thyroid hormone due to an overactive thyroid gland. Symptoms can include increased heart rate, weight loss, heart palpitations, frequent bowel movements, depression, fatigue, fine or brittle hair, sleep problems, thinning skin, and irregular vaginal bleeding. Graves' disease is the most common cause of hyperthyroidism. Many other health problems or taking excess thyroid hormone medication can cause an overactive thyroid gland. Treatment for the condition is with medication, radioactive iodine, thyroid surgery (rarely), or reducing the dose of thyroid hormone. No diet has been shown to treat hyperthyroidism or its symptoms and signs.
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Is a Sty Contagious?
A sty is an infected eyelash hair follicle or meibomian gland. Staph causes most styes. Styes can be treated at home with warm compresses that usually facilitate the drainage of the infection.
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Is Pinkeye Contagious?
Pinkeye (conjunctivitis) is inflammation of the conjunctiva. Whether pinkeye is contagious depends upon what is causing the irritation. With pinkeye, people may experience swollen eyelids, a pinkish color in the whites of the eyes, eye discharge, photophobia, increased tear production, and itching.
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Pink Eye (Conjunctivitis)
Pinkeye, also called conjunctivitis, is redness or irritation of the conjunctivae, the membranes on the inner part of the eyelids and the membranes covering the whites of the eyes. These membranes react to a wide range of bacteria, viruses, allergy-provoking agents, irritants, and toxic agents.
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Sty (Stye)
A sty is a bump that forms on the eyelid as a result of a blocked gland. Styes may be caused by infections, burns, or trauma to the eyelid. Most styes resolve on their own. The application of warm compresses can speed healing. In some cases, steroid injection or incision and drainage may be necessary. Keeping the area clean and consuming a diet high in omega-3-fatty acids may help prevent the formation of styes.
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What Are Some Common Eye Infections?
An eye infection is a condition in which viruses, bacteria or other microbial agents may attack the eye. This can cause itching around the eyes or the eyes may turn pink. The infection can affect the eyelid, cornea or conjuctiva (inside lining of the eyelid).
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What Causes Yellow Discharge From Eyes?
What is yellow discharge from your eye? Learn what causes it, how to recognize it, and how it is treated.
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What Does An Eye Infection Look Like?
An eye infection may bring about the following changes in the eye: A pink tint in the whites of the eye, swollen red or purple eyelids, crusty lashes or lids, and/or discharge of fluids which may be yellow, green or clear.
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What Is a Twitching Eye a Sign of?
A blepharospasm (eye twitch) is a harmless tic of the eyelid muscle, which may resolve on its own. Conditions that may cause eye twitch include blepharitis, dry eyes, light sensitivity or conjunctivitis. Nerve disorders can also cause eye twitching.
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What Is the Fastest Way to Get Rid of a Chalazion?
Stye is painful inflammation and swelling on the eyelid with the accumulation of pus. It is an infection commonly caused by the bacterium, Staphylococcus. It is usually not possible to get rid of a chalazion completely overnight or “fast” because there are no shortcuts to the treatment. You can use warm compresses, gentle cleansers and painkillers to treat a chalazion or see your doctor for medical intervention or surgery.
Examples of Medications for Swollen Eyes
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