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Eye and Ear Diseases
HaneyGenPathC14_14
| Question | Answer |
|---|---|
| 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
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