Least sedating antihistamine

This can result from irritation by contact lenses or by the proteins from tears that bind to the surface of the lens.

Symptoms include: Associated with wearing contact lenses, giant papillary conjunctivitis is a severe form of contact allergic conjunctivitis in which individual fluid sacs, or papules, form in the upper lining of the inner eyelid.

The itching may be so bothersome that patients rub their eyes frequently, making symptoms worse and potentially causing infection.

Perennial allergic conjunctivitis (PAC), as its name implies, occurs year-round.

This type of allergy primarily affects older patients - mostly men with a history of allergic dermatitis.

Symptoms of atopic keratoconjunctivitis can occur year-round and are similar to those of vernal keratoconjunctivitis: If left untreated, atopic keratoconjunctivitis can result in scarring of the cornea and its delicate membrane.

The primary types of eye allergy are seasonal or perennial allergic conjunctivitis, vernal keratoconjunctivitis, atopic keratoconjunctivitis, contact allergic conjunctivitis and giant papillary conjunctivitis.

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Those tests may include an examination with a microscope, which will show swollen blood vessels on the surface of the eye.Eye allergies develop when the body’s immune system becomes sensitized and overreacts to something in the environment that typically causes no problem in most people.An allergic reaction can occur when that “something” (called an allergen) comes in contact with antibodies attached to the mast cells in your eyes; the cells respond by releasing histamine and other substances or chemicals that cause tiny blood vessels to leak and the eyes to become itchy, red and watery.The eyelids may be puffy, and bright lights may be bothersome.SAC symptoms often accompany the runny nose, sneezing and nasal congestion associated with hay fever and other seasonal allergies.Vernal keratoconjunctivitis is a more serious eye allergy than SAC or PAC.While it can occur year-round, symptoms may worsen seasonally.Any treatment should be discussed with your child’s physician.Atopic eczema, also known as atopic dermatitis, is the most common form of eczema.It primarily occurs in boys and young men; about 75 percent of patients also have eczema or asthma.Symptoms include: If left untreated, vernal keratoconjunctivitis can impair vision.

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