Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
35 Cards in this Set
- Front
- Back
|
the perfect refraction of the eye.
|
Emmetropia
|
|
|
the eye does not refract light enough (farsightedness).
|
Hyperopia
|
|
|
the eye overrefracts or overbends the light (nearsightedness).
|
Myopia
|
|
|
a refractive error caused by unevenly curved surfaces on or in the eye, especially of the cornea
|
Astigmatism
|
|
|
pupillary constriction
|
Miosis
|
|
|
pupillary dilation
|
Mydriasis
|
|
|
What is the process of maintaining a clear visual image when the gaze is shifted from a distant to a near object called?
|
Accommodation
|
|
|
What is the cause of miosis?
|
Light and close reading.
( the pupil reacts to the light and becomes smaller.) |
|
|
What is the cause of mydriasis?
|
Low light (darkness) or looking at a distance.
( the pupil gets larger to allow for light in. ) |
|
|
Pupil constriction and dilation control the amount of ___________ entering the eye.
|
light
|
|
|
the perfect refraction of the eye.
|
Emmetropia
|
|
|
the eye does not refract light enough (farsightedness).
|
Hyperopia
|
|
|
the eye overrefracts or overbends the light (nearsightedness).
|
Myopia
|
|
|
a refractive error caused by unevenly curved surfaces on or in the eye, especially of the cornea
|
Astigmatism
|
|
|
pupillary constriction
|
Miosis
|
|
|
the perfect refraction of the eye.
|
Emmetropia
|
|
|
the eye does not refract light enough (farsightedness).
|
Hyperopia
|
|
|
the eye overrefracts or overbends the light (nearsightedness).
|
Myopia
|
|
|
a refractive error caused by unevenly curved surfaces on or in the eye, especially of the cornea
|
Astigmatism
|
|
|
pupillary constriction
|
Miosis
|
|
|
What is it called when the lower eyelid is relaxed and falls away from the eye?
|
Ectropion
|
|
|
What can cause dry eye symptoms?
|
Ectropion and some medications.
|
|
|
What are the structural age-related changes of the eye?
|
Decreased eye muscle tone
•Ectropion and dry eye •Arcus senilis •Corneal changes •Changes in color of sclera •Less ability to dilate pupil •More light needed for reading |
|
|
Decreased eye muscle tone reduces the ability to____________________.
|
to keep gaze focused on a single object.
|
|
|
What is arcus senilis?
What is its cause? Does it affect vision? |
-Bluish white ring around the edge of the cornea.
-Caused by fatty deposits. -NO |
|
|
After the age of 65 the cornea flattens in the eye? What does this cause?
|
distorted or blurred vision.
|
|
|
What color does the sclera change to with age?
|
Yellow
|
|
|
What is needed when the pupils ability to dilate decreases with age?
|
More light to see. Teach pt. safety
|
|
|
What are the age-related functional changes of eye?
|
•Lens yellows.
•Accommodation is gradually lost. •Near point of vision increases (presbyopia). •Far point decreases. •Color perception decreases. •Intraocular pressure increases. |
|
|
What colors are harder for the aging eye to see?
|
Green
Blue Violet |
|
|
What is the normal intraocular pressure (IOP)?
Does it increase or decrease with age? |
-10-21
- Decrease |
|
|
Presbyopis commonly begins at what age?
|
40
|
|
|
What eye problem is more common in men?
What eye problem is more common in females? |
- retinal detachment
- dry eye syndrome |
|
|
What is pruritus?
|
itching
|
|
|
What is photophobia?
|
sensitivity to light
|
