For many people, spring and summer bring itchy eyes, sneezing, and seasonal allergies. But for individuals living with keratoconus (KC), allergy season can present an additional challenge: the strong urge to rub the eyes. Theinstinct may seem harmless in the moment, but growing research suggests that frequent eye rubbing—especially when combined with allergies—may increase the risk of developing or worsening keratoconus. Understanding this connection can help patients and caregivers take steps to protect the cornea during allergy season.  

Why Allergies Can Trigger Eye Rubbing 

Allergies often cause itching, irritation, and inflammation on the surface of the eye. When the eyes itch, rubbing can feel like immediate relief. Unfortunately, rubbing can create a cycle: 

1. Allergies cause itching 
2. Rubbing temporarily relieves the itch 
3. Rubbing irritates the eye further 
4. The eye becomes even itchier 

This cycle can repeat throughout the day, especially during peak allergy seasons. 

Eye Rubbing and Keratoconus 

Several studies have examined the relationship between allergies, eye rubbing, and keratoconus. A study examining allergic conjunctivitis found that patients with eye allergies had a significantly higher risk of developing keratoconus compared with those without allergies.1 In this large analysis of patient records, allergic eye disease was associated with a measurable increase in keratoconus diagnoses. 

Another study explored how eye rubbing and allergic conditions (often called “atopy”) interact in keratoconus. Researchers found that both factors were individually associated with the disease, and when eye rubbing and allergic conditions occurred together, the association with keratoconus was even stronger. 2 In this study, eye rubbing was reported by over two-thirds of people with keratoconus, suggesting that it may play an important role in the disease process.2  

While keratoconus has many contributing factors—including genetics—researchers increasingly view eye rubbing as a modifiable behavior, meaning it is something patients can actively work to avoid. 

Why Rubbing Can be Harmful 

The cornea—the clear front surface of the eye—must maintain a specific shape to focus light properly.Keratoconus occurs when the cornea becomes thinner and begins to bulge forward into a cone-like shape. Repeated mechanical pressure from eye rubbing may place stress on the cornea and contribute to these structural changes over time. 

For patients who already have keratoconus, rubbing may also aggravate symptoms or potentially accelerate progression. Because of this, eye care providers often emphasize one simple but important rule: Try to avoid rubbing your eyes whenever possible. 

What to Do If Your Eyes Are Itchy 

Avoiding eye rubbing does not mean you have to tolerate uncomfortable allergy symptoms. 

Instead, consider these steps: 

• Talk to an eye care provider. If your eyes are frequently itchy, red, or irritated, ask your eye doctor about treatments for ocular allergies. Options may include prescription or over-the-counter allergy eye drops, antihistamines, or other therapies that reduce inflammation and itching. 

• Use cold compresses. A clean, cool compress placed gently over closed eyelids can help soothe irritated eyes. 

• Keep eyes well lubricated. Artificial tears can help wash allergens off the surface of the eye and reduce irritation. 

• Be mindful of rubbing habits. Many people rub their eyes without realizing it—especially when tired or working at a computer. Becoming aware of the habit is often the first step to stopping it. 

For Parents and Caregivers 

Children and teenagers with allergies may rub their eyes frequently without understanding the potential risks. Helping them recognize the habit early and managing allergy symptoms can be an important way to protect their eye health. If a child frequently rubs their eyes, complains of blurry or distorted vision, or has changingprescriptions for glasses, an eye exam may be helpful. 

Reach Out 

Allergies are common, and itchy eyes can be frustrating. But for people with keratoconus—or those at risk for the condition—managing allergy symptoms and avoiding eye rubbing can be an important part of protecting long-term vision. If your eyes are frequently itchy, talk with an eye care professional about treatment options. With the right strategies, it is possible to manage allergy symptoms without putting additional stress on the cornea. 

1. Lishinsky-Fischer, N., et al. (2026). Incidence of keratoconus following allergic conjunctivitis: A retrospective cohort study using a multicenter database. Contact Lens and Anterior Eye. 
2. Yang, K., Li, D., Xu, L., Pang, C., Zhao, D., & Ren, S. (2022). Independent and interactive effects of eye rubbing and atopy on keratoconus. Frontiers in Immunology, 13, 999435.