The conjunctiva is a thin membrane that covers the eye. When an allergen irritates the conjunctiva, common symptoms that occur in the eye include: ocular itching, eyelid swelling, tearing, photophobia, watery discharge, and foreign body sensation (with pain). Itching is the most typical symptom of ocular allergy, and more than 75% of patients report this symptom when seeking treatment. Symptoms are usually worse for patients when the weather is warm and dry, whereas cooler weather with lower temperatures and rain tend to assuage symptoms. Signs in phlyctenular keratoconjunctivitis include small yellow nodules that develop over the cornea, which ulcerate after a few days. A study by Klein et al. showed that in addition to the physical discomfort<unk>  causes, it also alters patients' routines, with patients limiting certain activities such as going outdoors, reading, sleeping, and driving. Therefore, treating patients with<unk>  may improve their everyday quality of life.
Allergic conjunctivitis
Actinic conjunctivitis
Ligneous conjunctivitis
Acute hemorrhagic conjunctivitis
Ocular larva migrans
Phlyctenular keratoconjunctivitis
Sympathetic ophthalmia
Adenoviral keratoconjunctivitis