Keratoconus is frequently associated with allergic eye disease and other atopic conditions, although allergy itself is not the sole cause. The link is thought to involve chronic eye rubbing driven by itch and inflammation.
Allergy and Eye Rubbing
People with hay fever, eczema, or asthma often experience itchy, watery eyes. Repeated rubbing places mechanical stress on a cornea that may already be genetically vulnerable, contributing to thinning and cone formation.
- Allergic conjunctivitis is common in keratoconus patients
- Controlling itch reduces the urge to rub the eyes
- Rubbing with knuckles or fists is particularly harmful
Managing Allergy in Keratoconus
Topical antihistamines, mast?cell stabilisers, and cold compresses can help ease itch. Education about avoiding rubbing is an important part of keratoconus care, alongside monitoring and any structural treatments.
Clinical Implications
Patients with significant allergies and a family history of keratoconus may benefit from earlier corneal imaging to detect changes at a very early stage.
