Chapter 72 - Complete.doc - Cindi and Ryan Study Guide...

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Cindi and Ryan Study Guide Under each heading identify 2 important concepts and determine a rational for why they are important to the topic. Students names: Cindi and Ryan Chapter: 72 Belpharitis, Hordeolum, Chalazion Definition (5 terms) Blepharitis Inflammation of the eyelids usually caused by an infectious process. The two types of blepharitis are anterior and posterior. All forms of blepharitis can result in the development of hordeola or chalazion. Anterior blepharitis Involves the anterior lid margin and usually associated with staph infection or seborrhea. Posterior blepharitis Involves posterior lid margin and is characterized by Meibomian gland dysfunction and is sometimes associated with rosacea. Chalazion A chronic, sterile, lipogranulomatous lesion caused by inflammation or non-infectious obstruction of the Meibomian glands. Does not normally cause pain. Hordeolum Acute infection of one of the glands in the eyelid. A hordeolum is usually painful and is mostly caused by Staphylococcus aureus. Meibomian gland A kind of sebaceous gland located at the rim of the eyelids that supplies an oily substance called meibum. Meibum helps prevent the water layer on the eye from drying out. When
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these glands become inflamed a chalazion can result. When these glands become infected they can cause a hordeolum. Zeis or Moll glands A type of apocrine sweat gland found on the margin of the eyelid that secretes sebum that keeps the eyelashes supple. These glands are prone to infection and blockage. When these glands become infected a hordeolum can result.
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