Test Bank for Davis Advantage for Understanding
Medical-Surgical Nursing, 7th Edition by Linda S.
Williams, Chapter 1 - 57 | Complete Newest Version
What is hypermetropia? - ANSWER long sitedness, whereby light ray convergence
at a point after the retina, and therfore out of focus. Nearby objects apphear blurry
while distant objects are clearer
- ANSWER
what is myopia? - ANSWER near/short sightedness, close is clear, far is blurry
-usual starts in puberty and gets worse untill eye is fully grown. also in very young
children.
conditions associated with myopia? - ANSWER squint- childhood eyes point in diff.
directions.
lazy eyechildhood, one eye. doesnt develop properly
glaucoma - IOC pressure.
cataracts - develpoment of cloudy atches inside lense.
Retinal detachment - wherby retina pulls awat from the blood vessel that nourish it
What is astigmatism? - ANSWER Failure to converge image at one point on the
fovea (likea refraction rather than focusing)
Causes of astigmatism? - ANSWER -Hereditary - corneal or lenticular
-Injuries to the cornea, such as infection that scars the cornea
keratoconus & kertoglobus - causes bulgin, thinner and shape change.
Some conditions of the eyelid
others that affect cornea or lense
What is presbyopia? - ANSWER gradual loss of your eyes' ability to focus on
nearby objects. It's a natural part of aging 40-65yrs
Aetiology of bacterial conjunctivitis? - ANSWER S.Aureus, Sterp. Pneumo or H.flu
also STIs chlamydia trachromatis, N.gonnorheae
what is opthalmia neonatorum? - ANSWER chlamydia or gonorrheae infection
from infected birth canal affecting 20-40%
What is Episcleritis ? - ANSWER Inflamationof localiased superficial episclera
vascular network, most commonly diffuse (moderate to sever inflam @1-3 month
intervals)
,-Nodular/focal episcleritis (can often present with associated systemic disease)
What are the classification of Allergic conjunctivitis? - ANSWER type 1
hypersensitivity - seasonal (SAC)
perrenial - chronic (PAC)
Atopic - relates to eczema and athsma
gaint pappilary (GPC)
Limbal and tarsal kertaoconjuctivitis (VKC)
What is gaint pappilary Allergica conjunctivitis - ANSWER inner lining of the eyelid
swells and develops small bumps. Known as papillae, these bumps tend to form
after chronic irritation
what can cause a corneal abbration? - ANSWER Direct trauma
Foreign body between eyelid and conjunctiva
Heat by contact
UV radiation (Arc Eye)
What can cause corneal ulcer? - ANSWER can be secondary to abrasive trauma,
pentrating injuries or prolonged use of contact lenses
What are dendritic ulcers? - ANSWER Herpes simplex virus (HSV) keratitis is the
most frequent cause of corneal blindness.
- aggressive treatment -
Symptoms of Dendritic ulcers? - ANSWER Pain
Photophobia
Blurred vision
Tearing
Redness
- with fluorescein staining and has a delicate branching pattern,
Appearance of dendritic ulcer on opthalmoscopy? - ANSWER - infectious epithelial
keratitis (with characteristic dendritic ulcers)
-neurotrophic keratopathy
-stromal keratitis endotheliitis (classified as disciform, diffuse, or linear)
what are the symptoms of keratic precipitates and anterior uveitis - ANSWER Pain,
generally developing over a few hours or days except in cases of trauma:
Redness
Photophobia
Blurred vision
Increased lacrimation
Chronic anterior uveitis presents primarily as blurred vision and mild redness.
pain & photophobia normaly only during acute episode.
what are the symptoms of posterior Uveitis? - ANSWER Blurred vision and floaters
Absence of symptoms of anterior uveitis (ie, pain, redness, and photophobia)
,All parts of the posterior chamber may be affected, including the retina, choroid and
optic nerve. It can be caused by bacterial, fungal, viral and parasitic infections.
What are the findings of posterior Uveitis upon opthalmoscopy? - ANSWER
posterior uveitis Showing candle wax drippings (white areas)
Anterior uventis is linked to which non infectious diseases? - ANSWER -
Ankyolising spondilitis,
-behcet syndrom (ulcers eye,mouth & genitals),
-IBS,
-Juvenile arthritis, sarcoidosis (Granulomatous disease),
-seronegative arthropathy
Anterior uventis is linked to which infectious diseases? - ANSWER HSV, SYphilis,
TB & varicella zoster
Intermediate uventis (Cillary body to retina) is linked to which non-infectious
disease? - ANSWER Lymphoma, MS and sarcoidosis
Posterior uventis (Retina, retinavvessels) and Panuverntis (iris, cilliary body and
choroid layer) - is linked which non-infectious diseases? - ANSWER Behcets
sydrome, lymphoma, sarcoidosis2
Posterior uventis (Retina, retinavvessels) and Panuverntis (iris, cilliary body and
choroid layer) - is linked which infectious diseases? - ANSWER CMV, endogenous
encephalitis, syphalis. TB and varicella zoster
Toxicaris & toxoplasmosis
Workup for suspected uveitis? - ANSWER CBC, ESR, Antinuclear antibody (ANA),
Rapid plasma reagin (RPR)
Venereal disease research laboratory (VDRL)
Lyme titer
HLA testing for ankylosing spondylarthroses
Chest radiography (to assess for sarcoidosis or tuberculosis)
Urinalysis (for red blood cells or casts)
Infectious workup (eg, HIV, toxoplasmosis), depending on the presentation
What is a HYPOpyon - ANSWER It is a leukocytic exudate, seen in the anterior
chamber, usually accompanied by redness of the conjunctiva and the underlying
episclera
-often co-inside with behcets disease, endophthalmitis, panuveitis/panopthalmitis &
Averse drug reactions
what are anterior synchiae? - ANSWER Peripheral anterior synechiae (PAS)
Adhesions between the iris and trabecular meshwork
PAS result from prolonged appositional contact between the iris and trabecular
meshwork
PAS may reduce outflow of aqueous humor
May lead to raised intraocular pressure
, What are floaters? - ANSWER Spots, threads, or fragments of cobwebs, which
float slowly before the observer's eyes
commony collagen breaking down to fibrils, retinal tears and tear film debris of
conjuctival surface
what are cateracts and how will a pateint present? - ANSWER Gradual thickening
of the lens.
Hx of progressive residual deteriation and disturbance in night & near vision
charectoristic of senile cataracts? - ANSWER -decreased visual acuity
-glare
-Myopia or myopic shift
- monocular diplopia - abnormal curvature of corneal surface , created double vision
in 1 eye!
What is intracapsular extraction? - ANSWER Extraction of entire lens, including the
posterior capsule and zonules,
caries postoperative comlications
What is extracapsular extraction - ANSWER removal of the lens nucleus through
an opening in the anterior capsule and a relatively large limbal incision, with retention
of the integrity of the posterior capsule
What is phacoemulsification - ANSWER extraction of the lens nucleus through an
opening in the anterior capsule; an ultrasonically driven needle is used to fragment
the nucleus of the cataract; the lens substrate is then aspirated through a needle port
via a small limbal or scleral incision
What is optic neuritis? - ANSWER demyelinating inflammation of the optic nerve
that often occurs in association with multiple sclerosis (MS) and neuromyelitis optica
(NMO)
Signs of optic neuritis? - ANSWER Decreased pupillary light reaction in the
affected eye:
Varying degrees of vision reduction: From mild acuity to complete vision loss
Abnormal contrast sensitivity and color vision: In almost all patients with adult optic
neuritis who have decreased visual acuity
Altitudinal field defects
Arcuate defects
Nasal steps
Central scotoma
Cecocentral scotoma
Papillitis (swollen disc): Found in one third of patients with optic neuritis
Symptoms of optical neuritis? - ANSWER -Preceding viral illness
Rapidly impairmed vision in 1 eye or, less commonly, both eyes: