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Diseases and Disorders of the ear and eye - Assignment Example

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This paper gives the answers to the typical questions on the theme "diseases and disorders of the ear and eye". Example: How does the process of normal vision take place? What are the four main errors of refraction? Describe each refraction error. etc…
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Diseases and Disorders of the ear and eye
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Describe the three separate parts of the ear.
Answer: The three separate parts of the ear are external ear, middle ear and inner ear. The external ear comprises of the auricle, the auditory canal and the drumhead. The middle ear is made up of the ear tube, the mastoid and its ear cells. The inner ear comprises of the bony labyrinth and the membranous labyrinth. The external ear is mainly involved in receiving sound impulses and transmitting it forward. The middle ear is also a conduction system.
Differentiate between the two primary types of glaucoma.
Answer. The two primary types of glaucoma include open angle glaucoma and angle closure glaucoma. A high intraocular pressure is characteristic of both the types. Open angle glaucoma has a greater frequency of occurrence and it is characterized by a gradual blockage of the drainage of the eye. The angle of the iris and cornea is open and not very narrow and thus it presents chronically. Angle closure glaucoma on the other hand is acute because of the narrowing of the angle that exists between the iris and the cornea.
Name the etiologic factors of macular degeneration.
Answer: Macular degeneration is mainly an age related pathology which results in complete loss of vision in developed nations. Although no definite causes for the condition have been identified but smoking of cigarettes, raised blood pressure and genetics are known to play a role. ...Download file to see next pagesRead More
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