March, is the Allergic season

There are more and more patients with allergic symptoms in our clinical outpatient. March, a getting warm season, also a allergic season.

Allergic conjunctivitis is the most often seen in this season. Patients always feel severe itching, generalized hyperemia, moderate tearing, minimal exudation, none preauricular adenopathy, eosinophils in stained scrapings and exudates and never associated sore throat or fever.

The types are three as follows:

1. Immediate hypersensitivity reactions. Those contain hay fever conjunctivitis(pollens, grasses, animal danders,etc), vernal keratoconjunctivitis, atopic keratoconjunctivitis and giant papillary conjunctivitis which caused by wearing contact lens, especially soft contact lens and attendance.

2. Delayed hypersensitivity More >