Allergy

Allergy

Reaction of the body's immune system to a foreign substance (e.g., pollen, animal dander, etc. ). When the eyes are affected, the most common symptoms are redness, itching, chemosis, tearing, swollen eyelids and stickiness. Read more about allergies and the eyes.

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Part of Speech: noun
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Industry/Domain: Health care
Category: Optometry
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Related terms

allergy

Biology; Immunology

A term covering immune reactions to nonpathogenic antigens, which lead to inflammation and deleterious effects in the host.

allergy

Health care;

A disorder of the immune system often also referred to as atopy. Allergic reactions occur to normally harmless environmental substances known as allergens; these reactions are ...

allergy

Veterinary health; Veterinary care

Immunological hypersensitivity to certain foreign antigens.

allergy

Health care; Dermatology

A condition in which a person is very sensitive to something in the environment, such as pollen or a kind of food. A person with an allergy may sneeze, have trouble breathing, and ...

allergy

Medical; Gastroenterology

A condition in which the body’s immune system has an over-reaction to certain foods, animals, plants, or other substances.

allergy

Consumer services; Hair salons

A bodily reaction to an irritant. Skin allergies can be exacerbated by solutions put on the skin.

ophthalmoscope

Eyewear; Optometry

An optical instrument used to examine the external and internal parts of the eye, particularly the media and the fundus.

pantoscopic angle

Eyewear; Optometry

1. Angle in the vertical plane between the optical axis of a spectacle lens and the visual axis of the eye in the primary position, usually taken to be the horizontal. 2. Angle ...

optical material

Eyewear; Optometry

Transparent material capable of being manufactured into optical components.

optical radiation hazard

Eyewear; Optometry

Possibility of damage to the retina by optical radiation.

optical centre

Eyewear; Optometry

For practical purposes, the intersection of the optical axis with the front surface a lens.

ophthalmoscope

Optometry; Optometry

An optical instrument used to examine the external and internal parts of the eye, particularly the media and the fundus.

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