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Eye and Ear


Defects in visual acuity due to inability of the eye to effectively focus light on the surface of the retina Refractive errors
Farsightedness; globe of eye is abnormally short in length from front to back. Hyperopia
Loss of elasticity in the crystalline lens of the eye Presbyopia
Nearsightedness; Globe of eye is abnormally long from front to back Myopia
Variations of curvature over certain portions of the lens or the cornea of the eye. Astigmatism
This disease causes squinting, headaches, and and frequent rubbing of eyes Refractive errors
Repetitive involuntary movement of the eye Nystagmus
Results from disease that produces lesions in portions of the brain and ears that control eye movement. Nystagmus
This disease may be a cause of nystagmus Meniere's disease
hordeolum; localized purulent inflammatory infection of one or more sebaceous glands of the eyelid Stye
A stye usually results from this Staphylococcus infection
A scratch on the transparent anterior cellular layer of the eye Corneal abrasion
Corneal abrasions can be caused by Dirt, dust, metal, or scratched contacts.
Pain, redness, and tearing of the eye indicate Corneal abrasion
Gradual chemical change causing opacity or clouding of the crystalline lens in the eye Cataracts
The four types of cataracts are: Senile, Traumatic, secondary, Congenital.
Gradual loss of vision and seeing halos around lights are common symptoms of Cataracts
Glaucoma accumulating fluid pressure within the eye damages the retina and optic nerve.
in glaucoma, more _____ ______ is produced. aqueous humor
Most common glaucoma open- angle
Glaucoma affects _ percent of the population over __. 2, 40
Loss of peripheral vision, mild eye ache, possible blindness indicate glaucoma
Complete or partial separation of the retina from the choroid layer of the eye Retinal detachment
______ ______ leaks and accumulates between the two layers of the eye. vitreous humor
Retinal detachment can be caused by; Head trauma, hemorrhages, tumors, and diabetes mellitus.
Floating spots and flashes of light in the field of vision indicate Retinal detachment
Slow progressive disease that produces change in the pigmented cells of the retina and macula causing drusen is Macular degeneration
The leading cause of new blindness in the US is Macular degeneration
Predisposing factors of macular degeneration include; age over 60, farsightedness, light colored eyes, and smoking.
Inflammation of the structure that lines the inner surface of the eyeball, causing itching, burning, pain, and tearing. Conjunctivitis
Possible causes of pinkeye include; heat, cold, chemicals, UV rays, and infection.
Inflammation of the uveal tract Uveitis
Inflammation of the cornea Keratitis
Caused by herpes type 1, syphilis, and tuberculosis. Keratitis
Disorder where the eyes can't focus on the same object Strabismus
Causes of Strabismus include; Lazy eye, amblyopia, CNS disturbances.
Crosseye, walleye Esotropia, Exotropia
Accumulation of cerumen in the ear canal impacted cerumen
Causes of impacted cerumen are dry skin, narrow canals, exessive hair in ear
Gradual loss of hearing, tinnitus Impacted cerumen
Inflammation of external ear canal external otitis
Bacteria, fungus, or trauma to the ear cause external otitis
Symptoms of Ext. otitis include Severe pain, pruritus, swelling, fever.
Accumulation of fluid in the middle ear Otitis media
Serous Otitis Med. causes include Change in atmospheric pressure, allergies.
Suppurative Otitis med. causes are Strep, staph, and pneumococcus bacteria.
S&S of Otitis media are pressure in the ear, impaired hearing, chills, nausea.
Formation of spongy bone, especially over the oval window Otosclerosis
The etiology of otosclerosis is ideopathic
Otosclerosis symptoms include Gradual loss of low tones, tinnitus
Nausea, vomiting, dizziness and vertigo are symptoms of Motion sickness
The cause of motion sickness is the disturbance of equilibrium in the ear.
Vertigo, progressive deafness, and tinnitus mark Meniere's disease
Etiology of meniere's is Ideopathic, but it destroys the hairs in the cochlea.
Created by: Barfield09