Posts Tagged ‘Allergic’
Allergic Conjunctivitis
Conjunctivitis is inflammation of the conjunctiva (mucous membrane lining the anterior sclera and the inner surfaces of the eyelids) that appears in a wide variety of disorders, including allergy.
Allergic inflammation of the ocular surface (the edge of the eyelids, conjunctiva and cornea) is one of the most common eye diseases, mainly observed in industrialized countries.
In its mildest form, the conjunctiva becomes inflamed in response to an allergen transient or persistent and produces troublesome symptoms but do not threaten vision. In its most severe are conditions such as vernal and atopic keratoconjunctivitis which can be complicated and cause blindness if it affects the cornea.
The eye is a frequent target of the inflammatory response of local hypersensitivity reactions and systemic. Ocular inflammation resulting from immune responses is intense due to the high vascularity and the sensitivity of the
vessels of the conjunctiva that are embedded in a transparent medium. The eye and surrounding tissues are likewise affected by a variety of immunologically mediated disorders.
In the last ten years has made rapid progress in understanding the pathophysiology of allergic diseases. New concepts of allergic sensitization, The differentiation and IgE production were described thinking of allergic respiratory diseases, but can be applied to allergic eye diseases.