Week #2 Concept Review Flashcards
Eyes, ENMT, HNL
What is the sequence of the eye exam assessment , and what additional assessment tool is used?
1) Inspection
2) Palpation
*Tool: use of ophthalmoscope
What are expected findings for pupil size in bright light and in the dark?
Normally pupils are equal in size.
In bright light; 2-4 mm
In dark light; 4-8 mm
What is miosis and what can causes it, include 8 examples?
-Constricted pupils maybe unilateral or bilateral
-May be caused by something neurological or medications
-Things to consider includes: narcotics, opiates, heroin, fentanyl, Percocet, codeine, poisoning, or hemorrhage
What is mydriasis and what can cause it?
-Prolonged dilated pupils without change in light, observed in a client with Glaucoma (Pupils 7 MM)
-Street drugs, antihistamines, Botox, anesthesia
What is the part of the eye that is most sensitive to pain?
Cornea
What is a blink reflex?
A normal response of a client when the nurse gently touches the eye with a sterile cotton swab
What is the Snellen Test?
An eye test for distant vision, normal results are 20/20. The numerator is the distance away from the Snellen. The denominator is the grade reading of the client.
How is Snellen Test Graded?
-When a client can read most of the letters in a line, that is the grade reading of the client. If the client can only read less than half of the letter in a given line the grade reading of the client is the line above the Snellen chart.
What does it mean if the client has a 20/200 Snellen reading?
The client is considered legally blind
How is the Snellen test 20/70 interpreted?
The client being tested can see at 20 feet what a client with normal vision can see at 70.
What is the Rosenbaum Test?
Eye test for close vision by holding the chart 12-14 inches from the eyes. A normal Rosenbaum Test results in a score of 14/14
What is myopia?
Near sighted. Client has difficulty with far vision.
What is hyperopia?
Far sighted. Client has difficulty with near vision.
What is presbyopia.
Far sighted in a client 45 years old or older. The lens of the eye loses elasticity, resulting in the eye to change in shape to accommodate for near vision.
What is confrontation?
A test for peripheral vision.
What is consensual response-normal findings?
When pupil subjected to direct light or illumination, the eye constricts faster than non-direct illuminated light. Non direct illuminated eye, however, still constricts sluggishly during test.
What is ptosis?
Eye lid drooping, CN III (oculomotor nerve) defect.
What is a cataract?
A yellow thickened dense lens due to over exposure to the sun and dust. The client will have blurred vision, this is also apart of the aging process.
What is Arcus Siniles?
Light grey or whitening surrounding the iris due to deposition of lipids. It does not affect vision. Occurs in elderly.
What is pterygium?
Opacity of the bulbar conjunctiva that can grow over the cornea and block vision. Common in elderly.
When an elderly complains of a burning sensation, redness of the eyes, feeling grainy, what would be the appropriate action of the nurse?
Advise the client that these are signs and symptoms due to dry eyes, common in elderly. Advise the client to use artificial tears OTC and follow the direction of the bottle.
What is macular degeneration.
The loss of central vision but intact peripheral vision.
In Ophthalmology Clinic which client requires immediate attention?
A client with acute glaucoma, because client can lose vision in 1-2 hours and once nerve in eye is damage, it will not regenerate. Signs and symptoms of Acute Glaucoma include; severe headache, eye pain, N/V, blurred vision, halos around the light, eye redness.
What is the Test for Accommodation?
Ask the client to stare at an object as you move the object close to the eyes. Normal findings, constriction of the pupils and convergence of the eyes.
Describe Cover/ Undcover?
A preferred test for strabismus for pediatric clients.
What does the H-Method test for, and what is the Wheel Wagon used to test for?
These test for CN III (Oculomotor, CN IV (Trochlear), CN VI (Abducens).
H-Method test for EOM (extra ocular movements).
The Wheel Wagon test for the 6 Cardinal fields of gaze.
What is the normal finding for 6 cardinal field of gaze?
No nystagmus or no jerky eye movements.
What does Nystagmus mean?
Jerky movements of the eyes on 6 cardinal field of gaze which is an abnormal finding