One is their own allergies, with most patients having a history of allergic rhinitis and bronchial asthma. This group usually develops in the spring, with attacks when exposed to allergens, and the symptoms resolve or disappear soon after being removed from the allergen.
There are also incorrect lifestyle habits that lead to damage to the tissue cells of the eye itself. For patients who wear corneal contact lenses, it is important to replace them, choose rigid contact lenses with high permeability, shorten the duration of wear, improve contact lens care, avoid using care solutions containing preservatives and heavy metals that have potential antigenic activity, and stop wearing contact lenses during periods of worsening inflammation.
If the allergy is caused by a medication, that medication should be discontinued immediately.