Allergic conjunctivitis is also a type of allergic reaction which is the inflammation of the conjunctiva – the thin layer of cells or membrane that covers the surface of the sclera- the white part of the eyes as well as the inner sides of the eyelids – due to the allergy. This condition is also called the Atopic Conjunctivitis.
Allergic conjunctivitis is supposed to be caused by various conditions, but the commonly known cause may be the hay fever.
The symptoms of allergic conjunctivitis generally include: redness mostly due to vasolidation of the peripheral small blood vessels; itching and enhanced lacrimation – the production of tears. If such conditions combine with allergic rhinitis then it is medically known as allergic rhino-conjunctivitis.
The symptoms are mostly due to the discharge of histamines as well as other active substances by mast cells that stimulate dilation of blood vessels, irritate nerve endings and enhance the secretion of tears.
There are different types of allergic conjunctivitis include:
Gonorrheal conjunctivitis normally causes profuse pus-like discharge which if left untreated may lead to permanent blindness in remote cases.
The treatment of allergic conjunctivitis is averting the probable allergen which means the grass especially during the bloom or the hay fever season, as well as treating with antihistamines – either topical eye drops or systemic like oral – tablets or capsules.
Cromoglicate is widely used topically for treating allergic conjunctivitis. Also, chemicals like silver nitrate or antibiotic eye drops are routinely administered in disorders like Gonorrheal or Chlamydia types of conjunctivitis.