parts of the eye
the white of the eyes
scalera
what is commonly known as the eardrum
tympanic membrane
when light first enters the eye it passes through the ________
cornea
abnormal ringing or tinkling noise in the ear
tinnitis
what is blepharoptosis
drooping or prolapse of the eyelid -
symptoms include itching and burning, crusted eyelids, loss of eyelashes
what is the levator palpebrae superioris
7th muscle of the eye - moves the eyelid
colored portion of the eye - what two sets of muscles are found here
iris
radial muscles - dilate the pupil to allow more light in
circular muscles - constrict the pupil to allow less light in
the cartilaginous flap that has the ear lobe
auricle (pinna)
where does sound end? after it passes through the auditory nerves
Brain (cerebral cortex)
a middle ear infection
otitis media
the inability to perceive visual colors sharply
color blindness
progressive eye disease causing damage to the optic nerve - intra-ocular pressure
causes severe visual impairment -most of the time goes unnoticed until increased intra-ocular pressure - if pressure isnt relieved in 24 hrs it can lead to blindness
2 types closed angle and open angle
closed angle is most common type
glaucoma
what is the gel like substance that is found in the posterior chamber of the eye
vitreous humor
the 3 bones of the middle ear
malleus (hammer)
incus (anvil)
stapes (stirrup)
sound first enters the ear through the ______ before passing through the tympanic membrane (eardrum)
auditory canal
refractive error involving an abnormally shaped cornea and irregularly focused light rays
astigmatism
incision into the ear
nearsightedness - primary cause is the shape of the eye
myopia
this gland is found in the upper outer egde of the eyelid
It secretes ________ in a constant flow, to cleanse and lubricate the eye, prevent bacterial infections due to the presence of the antibacterial enzyme lysozme that, and acts as an emotional response.
lacrimal gland
tears
the auditory tube that connects the middle ear to the pharnyx - assists in equalizing middle ear pressure with atmospheric pressure
eustachian tube
the true organ of hearing
organ of corti
a sensation of dizziness, associated with balance, equilibrium, or inner ear problems is called?
vertigo
what is diabetic retinopathy
retinal disease related to type 1 or type 2 diabetes
can lead to aquired blindness
symptoms include blurred vision, floaters, and decreased peripheral vision
what are the 4 types of refraction errors and how are they treated
astigmatism
myopia
hyperopia
presbyopia
treated with glasses or contact
these days laser eye repair is an option as well
the sensitive nerve layer of the eye that transmits an image to the brain for interpretation
retina
what is the "snail" shaped structure of the ear that contains auditory fluids that aid in sound vibrations
cochlea
located posterior the iris, this colorless biconvex structure aids in focusing the images clearly on the retina
lens
increased ocular pressure
glaucoma
what is presbyopia
loss of vision due to old age
The condition known as _______________ is characterized by severe vertigo (dizziness) and tinnitus (ringing in the ears). Violent attacks may last from 10 minutes to hours and cause severe nausea, vomiting, and perspiration.
Menieres disease