Test 3 Flashcards
Leading cause of blindness if not corrected
Cataracts: Usually later in life
Leading cause of blindness in the USA
Diabetes
What does macular degenration cause
Central vision loss
- What is glaucoma caused by?
- What is effected first?
- Elevated pressue
- Peripheral vision
- What causes loss of transient vision in a young person
- Old person?
- migraine
- emboli problem
What is associated with retnial detachment?
Flashes of light
- What is diplopia in one eye significant for?
- Both eyes?
- Optical problem
- alignment problem
- What does itching of the eye signify?
- allergies
What changes in the eye happen with thyroid disease
Exophthamos (bulging of the eye)
What happens to the eyes with diabetes?
Large change of vision corrections and paraylsis of CN III, IV and VI.
KNOW PIC OF EYE FROM LATERAL VIEW
On Eye I and II lecture
KNOW EXTRAOCCULAR MUSCLES IN LECTURE
ON LECTURE EYE I and II
KNOW EXTERNAL EYE
ON LECTURE EYE I AND II
What to look for on periorbital skin
- Swelling
- Redness
- Lesions
- Rashs
What to look for on eyebrows?
- Amount of hair
- Scaliness
What to look for at the eyelash?
- Crusting
- Amount of lashes
What to look for on the eye lids?
- Edema
- Color
- Width of palpebral fissures
- Adequacy of eyelid closure
What to look for at the lacrimal apparatus?
- Swelling
- tearing or dryness
What to look for a tth econjunctiva and sclera?
- Color
- Vascular pattern
- Nodules
- Swelling
- Foreign bodies
How to remove foreign body in upper eyelid
- Take wooden part of cotton- tipped applicator on outer half of upper eyelid
- Use your other hand to pull the lid away from the globe
- As this happens you roll the lid
Snellen Eye Chart:
- How to perform test?
- What does this test for?
- Well lit area
- Position patient 20 feet from chart
- Have patient use glasses if they use the for anything other than reading
- Cover one eye and read smallest line possible
- Start left to right in one eye and right to left in other
- Well lit area
- Visual Acuity
How to test visual fields?
- Stand three feet from patient at eye level
- Have patient focus on your eye
- Test one eye at a time
- Patient should use glasses or contacts
- Slowly bring fingers into field of vision 45 degrees halfway between you and patient
- Have them tell you how many fingers
- Repeat for all 4 fields of the eye
Access EOMI
- How
- What are you looking for?
1.
- Stand 3 feet from patient and ask them to hold their haead still adn follow your fingers
- Draw a large X and a + with your index finger
- Do convergence- bring toward their eye
2.
Nystagmus- jerking or drifting of the eyes
Accomodation testing or near reaction testing
- What are you testing for?
- How to test
- Who looses this abillity
- Checking to see if the eyes will converge and pupils will constrict.
2.
- Stand to one side of your patient with yoru index finger or object 18” from your patient’s eyes and ask the patient to look at your finger.
- At this point eyes should converge and pupils should constrict
- Next, ask patient to look at the wall further away
- Eyes should diverge and pupils should should dialate
- Repeat several times
3. Older patients
Pupillar Responses
How to?
- First, measure each pupil size under normal light and with light shining
- Next, direct and consenual response measures what other pupil does in the opposite eye when light is shined in.
- Should constrict in both when shining light in either eye
Swinging Eye Test:
- What it tests for?
- How to test
- Tests for functional impairment in the optic nerves
2.
- Shine a light in one eye and rapidly swing to the other eye
- Should have a slight dilation in the second eye while light is crossign the bridge of the nose but should still constrict equally to the first eye as the light enters the pupil.
- Repeat going in the other direction
- If it continues to dilate rather than constrict an afferent defect is present (marcus Gunn pupil)
Lateral Penlight Test
- What it’s for
- How to do it
- Estimate the depth of the anterior chamber of the eye and should be done before administering mydriatic drops
2.
- Stand in front of your patient so that you ahve full view of iris
- Shine a light from teh temporal side fo the head across the front of th eye parallel to the plane of the iris
- Note the illumination fo the iris nasally
- If not lighted patient has a shallow anterior chamber indicating a risk of acute angle glaucoma
Corneal light reflex
- What testing for?
- How to test for?
- What is normal?
- What are abnormal tests significant of?
- Ocular alignment by reflecting light off the patient’s pupil
2.
- Stand in front of the patient from about 2-3 feet away
- Shine light toward the patient and observe where the light reflects from
3. Light reflects from the center fo both pupils
4.
- Esotropic: Eye turned in when light reflects lateral to the puil
- Exotropic: Eye turned out when light reflects medially to the pupil
Cover Test:
- What is test for?
- How to perform test?
- What’s normal
- What are some dysfunctions
- Detect tropia (full time eye misdirection)
2.
- Cover one of the patient’s eyes when they are focused on a specific point across the room
- observe movements of uncovered eye.
3. No shifting of the eye
4.
- Exotropic is when eye shifts outward
- Esotropic is when eye shifts inward
Cover-Uncover testing:
- What testing for
- How to test
- What’s normal
- What’s abnormal
- Testing for presence of phoria (eye moves because of disturbances in binocular vision)
2.
- Ask patient to focus on a distant object
- Cover and uncover one eye
- Observe the covered eye as it’s uncovered looking for movement
- Repeat for other eye
3. No movement
4.
- Esophoria is when eye moves in
- Exophoria is when eye moves out
Corneal Sensitivity
- What it tests for?
- How to test?
- Cranial nerve V
2.
- Ask patient to look up and away from you
- Approaching from the other side, out of patients line of vision, avoiding the eyelashes touch the cornea with a wisp of cotton
- If intact CNV senses the touch and should blink
- If motor is in tact, it’s CN VII
Ophthalmoscopic Exam
- When to use your Small aperature
- When to use your large aperature
- When to use green light
- When to use the grid pattern
- When to use the slit?
- When to Use Blue?
- Small pupils when lights are not dimmed
- For dialated pupils
- Better to see drusen bodies, nerve fiber defects and blood
- identify size of lesions
- exsamine anterior chamber, corneal injuries
- Corneal abrasions using fluorescein strips
Ophthalmoscopic Exam
- What deturmines the color or number you use on your scope?
- Where to set diopter to begin with?
- Where do you keep your finger during the eye exam
- What do you use for for near sighted?
- What do you use for far sighted?
- Shape of both parties eyes
- 0
- on the lens disc so you can focus if needed
- Myopic usually uses red
- Hyperopic usually uses black
Ophthalmoscope
- What hand and eye do you use when looking in patients right eye?
- Why?
- Where to have patient look during exam?
- right hand, right eye
- Keeps you from breathing or kissing the patient
- A spot on the wall to stare at
Ophthalmoscopes
- WHere do you shine the light of the ophthalmoscope?
- What are you looking for?
- What do you do when you find this?
- How do you prevent running into the patient?
- What happens when you see the red reflex?
- 45 degree angle about 1 foot away
- red reflex that’s seen when light strikes the retina and bounces back
- Gradually move in toward the patient and adjust your lens disc appropriately
- Use free hand to put on patients forhead.
- You will start to see blood vessels, the optic disc and the macula
Look at pictures of:
- Conreal abrasion
- Corneal opacification
- Conjunctivitis
- Pterygium
- Hyphema
- Cataracts
- Papilledema
- Diabetic retinopathy
- Drusen
Just look at them. Don’t know where to find them
Hemoptysis
Blood streaked sputum
If patient describes sharp pain sternally what is it usually?
Muscle spasm
Where do bronchi bifurcate?
Angle of Louis
Which Bronchi runs straighter?
Right so if you aspirate something it usually goes into the right lung