Sensory Exam Flashcards
Most common changes in the aging eye are those in the ___.
what happens?
lens partially or totally opaque loses elasticity peripheral vision losses depth perception decreases
what is Snellen’s chart
Used to test visual acuity
what does 20/20 vision mean
the patient can read at 20 feet what the normal eye can read at 20 feet
visual impairment starts at what number/
20/70
how to test intraocular pressure
puff of air
what is the whisper voice test
plug one ear, whisper in the other
what is the Rinne test
differentiates between conductive and sensorineural hearing loss. Place an activated tuning fork to mastoid process and in front of the ear
What is the Weber test
place tuning fork on top of head and see if they can hear the same from both ears
What is Romber’s test
have the patient stand with eyes open and then closed. Observe for swaying. Some swaying is ok!
what is Audiometric testing
When the patient is placed in a sound proof room with head phones and raises hand when sounds are heard
What is tympanometry
Used to measure compliance of the tympanic membrane and determine problems of the middle ear. It determines the amount of pressure in the middle ear.
What is a caloric test
Warm or cold water is irrigated into the ears.
Nystagmus is a normal response. If no nystagmus, it is indicative of Menier’s disease
S/S of any eye disorder
visual disturbances, pain, redness, secretions, itchiness, sensation of pressure in the eyes
possible Nursing Dx for eye disorders
acute pain
anxiety r/t visual-sensory deficit
deficient knowledge
define conjunctivitis
inflammation of conjunctiva due to a virus or bacteria
contagious (whether bacterial or viral)
aka pink eye
s/s of conjunctivitis
redness
crusting exudate
itching
define Blepharitis
chronic inflammation of eyelid margins
2 types seborrheic and ulcerative
define hordeolum
a sty, staph abscess in the sebaceous gland at base of eyelash
define keratitis
inflammation of cornea
s/s of keratitis
Pain inflammation Decreased vision photophobia spasms If untreated, patient may suffer loss of vision
define Hyperopia
farsightedness
light rays focused behind retina
define myopia
nearsightedness
light rays focused in front of the retina
define astigmatism
unequal curvatures in the shape of cornea which causes blurred vision.
define presbyopia
crystalline lenses lose elasticity, causing decrease ability to focus on close objects
s/s of refractive errors
Difficulty reading or seeing objects
Eyestrain causing headaches
Myopia – holding reading material close to eyes
Hyperopia – holding reading materials farther from eyes
Therapeutic interventions for refractive errors
Corrective lenses
Laser assisted in situ keratomileus (LASIK)
Photorefractive keratectomy (PRK) – laser
causes of blindness
Trauma
Complications of diseases (HTN, Diabetes, cataracts, glaucoma, malnutrition, infection)
Caused when the ray of light on their way to the optic nerve is obstructed or by disease of the optic nerve
Dx test for blindness
Visual field exam Tonometry Slit-lamp microscope exam Retinal angiography Ultrasonography
Define diabetic retinopathy
Vascular changes in retinal blood vessels
It’s due to the excess glucose, changes in the retinal walls, and formation of microaneurisms and constriction of blood vessels
define retinal detachment and name s/s
Separation of retina from choroid layer of eye which allows for fluid to enter the space between the layers
Signs & Sx: sudden change in vision, Flashing lights or floaters
Dx test of retinal detachment
indirect ophthalmoscopy
visualization of the retina
complications of retinal detachment
Increased intraoccular pressure and posses threat for further detachments
Define glaucoma
Group of diseases characterized by abnormal pressure within the eyeball
Pressure causes damage to cells of the optic nerve
Types:
Acute angle closure glaucoma
Primary open able glaucoma
s/s of acute angle closure glaucoma
ophthalmic emergency unilateral, rapid onset severe pain blurred vision rainbows around lights eye redness steamy-appearing cornea Photophobia tearing
s/s of primary open able glaucoma
bilateral, gradual onset painless at times mild aching headaches halo around lights frequent visual changes not corrected with eyeglasses
Dx test for glaucoma
tonometry: used to detect increased IOP
Normal IOP – 12 to 20 mm Hg
eye drop treatment for glaucoma
1st line treatment is focused on opening the aqueous flow using cholinergic agents (miotics) which constrict the pupil causing the iris to pull away from the drainage canal, allowing aqueous fluid to flow freely.
2nd type of medication used to slow production of aqueous fluid
Steroids may also be ordered to decrease inflammation
surgical management of glaucoma
Used when medication not able to control IOP
Focused on creating an area for aqueous humor to flow freely thus preventing increased intraocular pressure
Cataracts are painless
define cataract
Opacity in the lens of the eye that may cause a loss of visual acquity
Vision diminished because light rays are unable to get to retina through clouded lens
factors contributing to cataract development
Age UV radiation Diabetes Smoking Steroids Alcohol Nutrition Intraocular Infections Trauma Congenital Defects
surgical treatment for cataracts
Only treatment
Removal of cloudy lens one eye at a time
complications of cataract surgery
Inflammation Increased IOP Macular edema Retinal detachment Vitreous loss
risk factors for macular degeneration
Older than 60 years old Family history of macular degeneration Diabetes Smoking Frequent exposure to UV light Caucasian
s/s of macular degeneration
Dry type is slow, progressive loss of central & near vision
Usually both eyes, but can be affected differently
Wet type – onset sudden of visual loss Blurred vision Distortion of straight lines Dark or empty spots Decreased ability to distinguish colors
types of macular degeneration
Dry (atrophic)
Wet (exudative)
therapeutic interventions for DRY (ATROPHIC) macular degeneration
No treatment
Most do not lose peripheral vision or become totally blind
Most are classified as legally blind
Special low-vision lenses can enhance remaining vision
therapeutic interventions for WET (EXUDATE) macular degeneration
If diagnosed early – laser photocoagulation can seal the leaking blood vessels, which will slow rate of vision loss
Meds: antiangiogenic – prevents new blood vessels from forming
define each type of eye trauma Foreign body Burns abrasions/lacerations penetrating wounds
Foreign bodies – most common cause of corneal injury (dust in eyes, then rub eyes causing further irritation)
Burns – chemical, UV and direct heat
Abrasions & Lacerations – due to something dragging across the eye
Penetrating wounds – most serious due to eye structures may be permanently damaged
therapeutic intervention for foreign body trauma
NS flush to irrigate object out of eye or to a point where it can be taken out with a swab; topical antibiotic ointment for infection prevention
therapeutic intervention for chemical burn eye trauma
15 to 20 minute irrigation (the sooner the better) of tap water is fine to use at work site; sterile solution used in the hospital; topical antibiotic ointment for infection prevention
therapeutic intervention for abrasions and lacerations to eye
anti-infective ointments or drops after cleansing the eye with NS