T4 - Eye and Vision Assessment (Josh) Flashcards
Eye Refraction:
What are the different types?
Emmetropia (ideal)
Hyperopia (farsightedness)
Myopia (nearsightedness)
Astigmatism
Eye Refraction:
What causes Hyperopia (Farsightedness)?
lens does not refract light enough
Eye Refraction:
What causes Myopia (Nearsightedness)?
lens overbends the light
Pupil:
What is Miosis?
pupil constricted when exposed to increased light or close work, such as reading
Pupil:
What is Mydriasis?
pupil dilates when exposed to reduced light or looking at distance
Pupil:
— is constriction
— is dilation
Miosis
Mydriasis
What is it called when eyes are uneven in size?
anisocoria
Health Promotion:
What type of food should we promote for good vision?
Fruit
Veggies
- Red
- Orange
- Dark Green
Vision Assessment:
— — assesses visual acuity.
— — assesses near vision
Snellen Chart
Rosenbaum Pocket Vision Screener
Vision Assessment:
What does the Ishihara Chart assess?
Color vision
What is Arcus Senilis?
a narrow opaque band encircling the cornea, common in old age
***caused by fat deposits
What happens to Cornia as we age?
flattens, irregular surface of curve
Is yellowing of the lens normal as we age?
yes
What is Presbyopia?
diminished ability to focus on near objects as we age
As we age, what happens to intraoccular pressure?
increases
Diagnostic Tests:
What does a Slit-Lamp Examination do?
magnifies the anterior structures
Diagnostic Tests:
What do we do to check for corneal trauma, abrasions or ulcers?
Corneal Staining
Diagnostic Tests:
Which test measures Intraoccular Pressure?
Tonometry
***can be attached to the Slit-Lamp Device
Diagnostic Tests:
Which test assesses retinal circulation and requires IV Access?
Fluorescein Angiography
Diagnostic Test:
Teaching for Fluorescein Angiography
Mydriatic eye drops prior
Fluids afterwards to flush contrast media
Skin may appear YELLOW for few hrs afterwards
Urine BRIGHT GREEN after test