Anatomy of the Eye
The outermost lens of the eye that focuses light into the inner eye and protects it from harmful matter
What is cornea?
A small, thin membrane that vibrates when sound waves hit it
What is tympanic membrane (ear drum)?
Defective curvature of the cornea or lens of the eye
What is astigmatism?
Loss of ability to hear
What is deafness?
A surgically implanted device that allows sensorineural hearing-impaired persons to understand speech
What is cochlear implant?
The hole located in the iris that changes size to allow different amounts of light into the inner eye
What is pupil?
The three main parts of the ear
What are outer, middle, and inner?
A small, hard, cystic mass on the eyelid; formed as a result of chronic inflammation of sebaceous gland along the margin of the eyelid
Sensation of noises (ringing, buzzing, whistling, booming) in the ears
What is tinnitus?
Visual examination of the interior of the eye through dilated pupil
What is ophthalmoscopy?
The light sensitive layer within the eye that converts images into electrical signals
What is retina?
Directs outside sounds to the ear canal, projecting flap
What is pinna (auricle)?
Retinal effects caused by diabetes mellitus include: microaneurysms, hemorrhages, dilation of retinal veins, neovascularization
What is diabetic retinopathy?
Laser to correct errors of refraction by sculpting the cornea
What is LASIK?
The colorful structure of the eye that changes the shape of the pupil to allow for different amounts of light to enter the inner eye
What is iris?
3 small bones located in the middle ear
What are ossicles?
Increased intraocular pressure damages the retina and optic nerve
What is glaucoma?
Hardening of bony tissue in the labyrinth
What is otosclerosis?
Hearing tests using a vibrating fork
What is tuning fork test?
The nerve at the back of the eye that transports electric signals to the brain
What is optic nerve?
The 3 ossicles
What are malleus (hammer), incus (anvil), and stapes (stirrup)?
Clouding of the lens
What is cataract?
Disorder of the labyrinth with elevated endolymph pressure in the cochlea and semicircular canals causing tinnitus, sensitivity to sound, progressive hearing loss, headache, nausea, and vertigo
What is Ménière disease?
Dye injection to examine blood flow in the retina
What is fluorescein angiography?