Have you ever experienced that urge to rub your eyes vigorously and struggle with eye irritation?   Disturbances or irritation in your eyes can be very uncomfortable. Eye irritation is the general term used to describe the feeling when something is uncomfortable in your eyes or the surrounding area. Read this interesting article to learn about the common causes of eye irritations and how to prevent them. You can also find some handy home remedies to treat them at the end of the article.

What is eye allergy?

Eye allergies are also medically termed allergic conjunctivitis^.1 Allergic conjunctivitis is the inflammation of the conjunctiva, which is the tissue that covers the inner surface of the eyelids as well as the white part of the eyeball. It is common worldwide, and a temporary condition usually associated with nasal allergies.¹ People may have stuffy, running nose and sneezing.

How does it happen?

When eyes come in contact with an allergen that irritates them, cells in the eye release an anti-allergic substance called histamine to fight against the allergens. This defence mechanism causes your eyes to become red, swollen, itchy, and watery.

Symptoms of eye allergy

• Eye redness
• Swollen eyelids
• Itchy eyes
• Urge to rub eyes
• Burning sensation
• Watery eyes
• Sensitivity to light
• Blurred vision

Types of allergic conjunctivitis

Allergic conjunctivitis can be classified based on causative agents and time of occurrence,

Seasonal allergic conjunctivitis

This form of eye allergy occurs during spring and summer months, due to exposure to pollen or other airborne allergens. Seasonal allergens include tree pollen (early spring), grass pollen (May–July), and ragweed pollen (August–October).⁵

Perennial allergic conjunctivitis

This form persists throughout the year and is usually caused by indoor allergens such as house dust mites, moulds [Aspergillus and Penicillium species], feathers, cockroaches, and animal dander.⁵

Causes of eye irritation

Eye irritation can be caused by different environmental factors, allergens, or miscellaneous factors.

Environmental factors

Eye irritation can be caused by the following environmental factors:

• Pollen from grass, trees, or weeds
• Dust
• Smoke

Allergens

Allergy can also be due to allergens such as,

• Pet dander – dead skin cells shed by cats, dogs, or other pet animals.
• Mould
• Perfumes
• Eye cosmetics

Other causes

Other potential causes include:

• Contact lens.
• Eye care products
• Eyelash extensions
• Blocked tear ducts
• Dry eyes
• Eye strain from screens
• Foreign objects

How to differentiate between eye allergies and eye infections?

It is important to distinguish between eye allergies and eye infections that may be viral or bacterial.

Conjunctivitis

Conjunctivitis refers to an irritation or infection of the conjunctiva,² that is the outer part of the eyeball. It can be because of allergy, viral infection (pink eye) or bacterial infection.

Pink eye versus allergies

Pink eye is the common name for viral conjunctivitis. Most of the symptoms are similar for both conditions such as redness, watery eyes, and foreign body sensation.² Key differences include,

• Itching is present only in allergic conjunctivitis.²
• Allergic conjunctivitis is non-contagious while viral conjunctivitis is highly contagious.²
• Eye allergies affect both eyes at the same time while pink eye spreads from one eye to the other.²

Your doctor or ophthalmologist can be able to differentiate better, seeking medical help is highly recommended!

Allergic dermatitis

Allergic dermatitis is a similar condition that happens when the skin of the eyelids becomes inflamed by an allergic reaction. It is also associated with itching, rubbing, dryness, peeling and cracking of skin.⁴

Precautions to prevent eye irritations

Studies reveal that at least 20% of people around the world suffer from ocular allergy and it has a significant impact on their quality of life.⁵ Avoiding the allergens is the best way to prevent eye allergies,

• If you are allergic to pollen stay indoors when the wind blows pollen
• When outdoors wear sunglasses
• Keep your windows closed
• Clean your air-conditioning unit periodically
• If allergic to pets, keep them out of the bedroom
• Avoid damp areas - prevent mould growth in your surroundings.¹

Other precautionary measures include,

• Avoid sharing eye cosmetics with others,
• Wash your hands while placing and removing contact lenses,
• Avoid harsh chemicals and perfumes,
• Follow the 20-20-20 rule to avoid digital eye strain,
• Avoid vigorous rubbing of your eyes.

Home remedies

Though it is highly recommended to consult your physician if you have eye irritation or redness, these simple home remedies can help you to soothe irritation,

• Wash your eyes with clean water to remove foreign objects or allergens if any
• Cold or warm compresses to reduce itching
• Over-the-counter (OTC) lubricants can help to reduce irritation and wash out allergens
• OTC anti-allergic eye drops can reduce allergic reactions
• Avoid touching your eyes directly
• Avoid contact lenses and eye cosmetics for a while

Treatment

Removal of the potential allergens that initiated allergy is the only cure for allergic eye disease, when this is impossible the clinician should recommend any of the mentioned treatment options - non-pharmacological or pharmacological management.⁵

Non-pharmacological management

This is the first-line treatment approach to prevent the onset of allergic eye reactions and/or minimise the effect of the allergens. It includes:

• Saline irrigation
• Advice to avoid eye-rubbing
• Palliative therapy with cold compresses
• Preservative-free ocular lubricants (refrigerated)

Pharmacologic management of eye irritations

Depending on the severity of the condition, the doctor will prescribe a personalised treatment that may include,

• Eye drops with anti-inflammatory or anti-allergic therapeutic agents⁵
• Topical eye ointments/creams
• Antibiotics – if there is an underlying infection

Summary

Eye irritation and allergies are common discomforts caused by various environmental factors and allergens like pollen, dust, pet dander, and eye cosmetics. Symptoms include redness, itching, swelling, and watery eyes. Distinguishing between eye allergies and infections such as conjunctivitis is crucial, with allergic conjunctivitis often involving itching and being non-contagious. Preventative measures include avoiding allergens, maintaining cleanliness, and reducing digital eye strain.

Home remedies like washing eyes with water and using cold or warm compresses can provide temporary relief. Over-the-counter lubricants and anti-allergic eye drops are also helpful. Treatment options range from non-pharmacological approaches like saline irrigation to pharmacological management with anti-inflammatory or anti-allergic agents. Antibiotics may be necessary for underlying infections. Consulting a physician for persistent symptoms is recommended.

FAQs

What are the common causes of eye irritation and allergies?

Eye irritation and allergies can be triggered by various factors including environmental allergens like pollen, dust, and smoke, as well as allergens like pet dander, mould, perfumes, and eye cosmetics.

How do I differentiate between eye allergies and infections like conjunctivitis?

Allergic conjunctivitis typically involves itching and is non-contagious, whereas viral conjunctivitis spreads easily and lacks itching. Consultation with a healthcare professional is advised for accurate diagnosis.

What are some preventative measures I can take to avoid eye allergies?

Preventative measures include staying indoors during high pollen periods, wearing sunglasses outdoors, keeping windows closed, maintaining cleanliness to prevent mould growth, avoiding sharing eye cosmetics, practising proper contact lens hygiene, and reducing digital eye strain.

What home remedies can I use to alleviate eye irritation temporarily?

Home remedies such as washing eyes with clean water, using cold or warm compresses, and over-the-counter lubricants and anti-allergic eye drops can provide temporary relief.

When should I seek medical advice for eye irritation or allergies?

If you experience persistent symptoms such as redness, itching, swelling, or watery eyes, it is advisable to consult a healthcare professional for proper evaluation and treatment.

What treatment options are available for eye allergies?

• Lubricants
• Anti-allergic eye drops
• Anti-inflammatory eye ointments/drops
• Antibiotics