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Eye and Ear Diseases


It is not known what causes some individuals to develop these visual defects while others do not; however, some types show a strong familial pattern, suggesting a genetic predisposition to acquiring them. Refractive Errors
May be either congenital or acquired. Diseases that may cause this include Meniere's disease and multiple sclerosis. Nystagmus
Usually result from infection by Staphylococcus bacteria. Often an eyelash is found in the center. Stye (Hordeolum)
May be produced by foreign bodies such as dirt, dust, or metal particles trapped between the cornea and the eyelid. Corneal Abrasion
Caused by a change in the chemical composition of the lens so that there is a loss of lens transparency. Cataract
A condition suggests that unknown genetic factors may be involved. Glaucoma
Usually caused by head trauma. Retinal Detachment
Generally is the result of the aging process. macular Degeneration
Caused by infection from certain viruses or bacteria. Conjunctivitis
Ulcerative forms usually result from infection by Staphylococcus bacteria Blepharitis
Nonulcerative forms may be due to allergy or exposure to dust, smoke, or chmical irritants. Blepharitis
Most frequently due to infection of the cornea by herpes virus type 1 or certain bacteria or fungi. Keratitis
Most common cause in children is lazy eye, or amblyopia. Strambismus
May be due to dryness and scaling of the skin or excessive hair in the ear canal. Impacted Cerumen
Inflamation may be caused by a bacterial or fungal infection or by a dermatologic condition such as seborrhea or psoriasis. External Otitis (Swimmer's Ear)
May occur spontaneously or following an upper respiratory tract infection. It also may be occasioned by rapid changes in atmospheric pressure. Acute Serous Otitis Media
May develop from the acute condition, or it may result from the overgrowth of adenoidal tissue or chronic sinus infections. Chronic form of Serous Otitis Media
An idiopathic condition, but because the disease shows a familial pattern, genetic factors are suspected; often aggravated by pregnancy. Otosclerosis
Caused by any motion capable of disturbing the equilibrium of the organs of balanced in the inner ear. Motion Sickness
The cause is not known, but the disease process apperars to destroy the hair cells within the cochlea. Meniere's Disease
May be congenital and may be tansmitted as a dominant, autosomal dominant, autosomal recessive, or sex-linked recessive trait. Deafness
Most commmon cause in childeren is mumps. Deafness
Most common in children younger than 6 years of age; Most common organism causeing the condition is Hemophilus influenzae. Otitis Media
Predisposing factors include swmimming or bathing in contaminated water, or trauma to the ear canal from attempts to clean or scratch the ear. External Otitis (Swimmer's Ear)
Risk factors include increasing age (60 or older), farsightedness, light iris color, positive family history, and cigarette smoking. Macular Gegeneration
Created by: Zimmerman0246