Allergic conjunctivitis: Why does it hurt when applying eye drops, and what should be done?

Allergic conjunctivitis may cause eye drop discomfort due to physiological factors, or it could result from pathological causes such as drug allergy or conjunctival damage. Symptoms can be relieved through general management or medication. Specific analyses are as follows:

1. Physiological Factors

Under normal circumstances, both the conjunctiva and cornea contain blood vessels and nerves. When the ocular surface comes into contact with irritating eye drops, pain may occur. This is usually a normal physiological response and will gradually subside over time.

2. Pathological Factors

1) Drug Allergy
If a patient is allergic to ingredients in the eye drops, a stinging sensation may occur after instillation. In such cases, the medication should be discontinued immediately. Under medical guidance, patients may take antihistamines such as ebastine tablets or loratadine tablets.

2) Conjunctival Damage
In severe cases of allergic conjunctivitis, conjunctival damage may occur, which could exacerbate local pain and swelling when using eye drops. Patients may use tobramycin ophthalmic solution or levofloxacin ophthalmic solution as directed by a physician.

In addition to the above reasons, other possible causes include inflammatory irritation, eye infection, and allergies. It is recommended that patients seek timely medical evaluation at a hospital, undergo necessary examinations, receive an accurate diagnosis, and begin appropriate treatment promptly to avoid disease progression.