objective 7: needs of the client with sensory disorders Flashcards
normal vision-light rays are focused correctly on the retina
emmetropia
near sighted
myopia
farsighted
hyperopia
distortion owing to irregular corneal curvature
astigmatism
absence of lens
aphakia
involuntary movement of eyeball
nystagmus
no light perception
total blindness
has some light perception but no usable vision
functional blindness
some useable vision
legal blindness
visual acuity of 20/50 or worse in better eye
partially sighted
what are the types of ocular trauma?
blunt injuries
penetrating injuries
chemical exposure injuries
what are the causes of ocular injuries?
automobile accidents
falls
sports and leisure activities
assaults
work-related situations
usually caused by staph aureus
hordeolum
chronic inflammation of sebaceous glands in eyelid
chalazion
inflammation of the lid margins
blepharitis
inflammation of the protective membrane surrounding the eye
conjunctivitis
inflammation or infection of the cornea
keratitis
increased quality or quantity of tear film
irritation or sensation of sand in eye worsens throughout day
keratoconjunctivitis
Client cannot consistently focus two eyes simultaneously on the same object
strabismus
A group of disorders in which damage to the optic nerve is related to
increased intraocular pressure (IOP), optic nerve atrophy and
peripheral visual field loss
glaucoma
outflow of aqueous humor is decreased, drainage channels become clogged, and damage to the optic nerve can then result
primary open angle glaucoma
an opacity or cloudiness of lens
cataracts
Slow breakdown of the layers of the retina with
the appearance of drusen
dry or nonexudative macular degeneration
May have abrupt onset
Proliferation of abnormal blood vessels growing under
the retina
wet macular degeneration
condition in the middle or outer ear impair transmission of sound
conductive hearing loss
impairment of function of the crainal nerve
sensorineural hearing loss
combo of conductive and sensorineural
mixed hearing loss
inability to interpret sound due to problem in the brain
central and functional hearing loss
hearing loss associated with aging
presbycusis
- Infection of the middle ear
- Most frequently seen in children
acute otitis media
Result of recurrent acute otitis media; damages the
tympanic membrane and ossicle, and involves the mastoid
chronic otitis media
surgical incision into the eardrum, to relieve
pressure or drain fluid
myringitomy
surgical incision into the eardrum, to relieve
pressure or drain fluid.
tympanotomy
Reconstruction of the tympanic membrane
tympanoplasty
Reconstruction of the bones of the middle ear
ossiculoplasty
Removal of diseased bone and mastoid air cells
to create a noninfected, healthy ear
mastoidectomy
- Most common cause of hearing loss in young adults
- Spongy bone develops causing fixation of the footplate of the
stapes in the oval window - Typically bilateral
otosclerosis
Characterized by symptoms caused by inner ear disease
* Episodic vertigo, tinnitus, fluctuating sensorineural hearing loss,
aural fullness
* Results in excessive accumulation of endolymph in the
membranous labyrinth, causing rupture
* Hearing loss fluctuates
* Eventually becomes permanent
meniere’s disease
