Itchy and irritated eyes are among the most common reasons patients visit eye doctors. While rubbing may provide temporary relief, experts warn it can lead to serious consequences, including infections and corneal damage. Understanding the causes and adopting safer treatments can help protect your vision.
Why Do We Rub Our Eyes?
Rubbing is often a reflex response to discomfort or itching. The most frequent cause is allergic conjunctivitis, accounting for nearly 50% of itching cases. This condition involves an inflammatory reaction of the conjunctiva when allergens bind to cells, releasing chemicals that trigger itching. Other causes include dry eye syndrome, blepharitis, or dermatitis affecting the eyelid skin. The thin epidermis of the eyelids makes them especially vulnerable to irritation from environmental factors or contact lenses.
Risks of Eye Rubbing
Keratoconus
The most serious risk is keratoconus, where the cornea becomes progressively thinner and irregularly shaped. Instead of a healthy spherical shape, the cornea steepens into a cone, causing high degrees of irregular astigmatism and blurry vision. Fortunately, corneal cross-linking can halt progression in many cases, though specialized contact lenses or even corneal transplantation may be needed in advanced stages.
Other Conditions
Aggressive rubbing can cause a corneal abrasion—a painful scratch on the cornea that requires antibiotic treatment to prevent infection. It may also lead to a subconjunctival hemorrhage, essentially a bruise on the eye's surface that resolves within one to two weeks. Additionally, rubbing can spread conjunctivitis (pink eye), which is highly contagious in its viral form. Washing hands before touching eyes is crucial to prevent infection.
Treatments for Itchy Eyes
Most people rub unconsciously, but addressing underlying conditions can reduce the urge. Artificial tears, especially when refrigerated, provide relief for many causes. For allergic conjunctivitis, avoiding allergens, wearing sunglasses, and rinsing the face after exposure help. Cool compresses can also soothe itching. Over-the-counter allergy eye drops—antihistamines, mast cell stabilizers, or combination drops—are effective. Oral allergy medications may help if other allergy symptoms are present. In persistent cases, prescription steroid eye drops may be necessary. If symptoms do not improve with these measures, consult an eye doctor for evaluation.
This article was written by Taylor Starnes, Assistant Professor of Ophthalmology, and Neelam Patadia, Visiting Associate Professor of Clinical Ophthalmology, both at the University of Illinois, Chicago. It was first published by The Conversation and is republished under a Creative Commons licence.
