Eye Flashcards

1
Q

Mydriasis

A

enlarging of the pupil due to a dim light

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2
Q

Miosis

A

decreasing of the pupil size due to a bright light

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3
Q

What is another name for the optic disc?

A

the blind spot

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4
Q

Normal refractive condition of the eye

A

Emmetropia

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5
Q

Another name for nearsightedness

A

Myopia

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6
Q

Define Myopia

A

a condition in which the light rays focus in front of the retina

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7
Q

Another name for farsightedness

A

Hyperopia

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8
Q

Define Hyperopia

A

the light rays focus behind the retina

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9
Q

At what age does 20/20 vision occur?

A

age 7

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10
Q

At what age do the color of the eyes begin to change to a more permanent shade?

A

3rd mo of age

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11
Q

Another term for vision in both eyes

A

binocular vision

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12
Q

At what age do the eyes reach adult size?

A

8 yrs of age

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13
Q

While examining the eye you notice a glowing red color filling the pupil, what is this called?

A

red reflex

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14
Q

You examine the eye of another child and notice the red reflex is actually white, what does this indicate?

A

congenital cataracts

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15
Q

What disease is associated with infants and preschool children that have a “white glow” in the pupil?

A

retinoblastoma

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16
Q

Why do preggerz women describe visual changes?

A

shifting fluid in the cornea

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17
Q

How do the eyes change in the older adult?

A
  1. Xanthelasma
  2. Pingueculae
  3. Pyterygium
  4. Prebyopia
  5. Arcus sensilis
  6. Macular degeneration
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18
Q

Xanthelasma

A

soft, yellow plaques on lids at inner canthus

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19
Q

Pingueculae

A

yellowish nodules, thickened areas of bulbar conjunctive

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20
Q

Causes of Pingueculae

A

Prolong sun exposure to sun, wind, and dust

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21
Q

Ptyergyium

A

opacity of bulbar/ocular conjunctiva

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22
Q

What is the difference between Pingueculae and Pyyergyium?

A

pingueculae does not grow over the cornea and the pterygium

23
Q

What is you technique for assessment if the eye?

A
  1. inspection

2. palpation

24
Q

How do you inspect the external eye?

A
  1. Distances between palpebral fissures and equal

2. Eyelids symmetrically cover the eyeballs when closed

25
Normal findings of the irises
round and same color
26
Normal findings of the lens
clear and sclera white
27
Normal findings of the conjunctiva
moist and clear with small blood vessels
28
How do you inspect the cornea?
shine penlight from the side across the cornea
29
What about the eyebrows is related to hypothyroidism?
absence of lateral 3rd of eyebrow
30
What does the absence of eyelashes indicate?
plucking or pulling assoc. with OCD
31
What causes edema in the eyelids?
- allergies - <3 disease - kidney disease
32
What does the inability to move the eyelids indicate?
dysfxn of NS including facial nerve paralysis
33
What does it mean if the illuminated pupil fails to constrict?
theres a defect in the direct pupillary response
34
What does it mean if the unillluminated pupil fails to constrict?
there is a defect in the consensual response controlled by CN II
35
How do you palpate the eye?
1. close both eyes 2. Using 2 to 3 fingers, palpate lacrimal sacs, eyelids, and erythematous areas 3. Confirm no swelling, tenderness, and eyeballs feel firm
36
What does the denominator mean in the Snellen test?
distance at which a person w/ normal vision can read the 1st line
37
What does the numerator mean in the Snellen test?
a numerator is the distance from the chart (20ft)
38
What is the purpose of the Rosenbaum Chart?
testing near vision
39
What is the purpose of the Confrontation test?
measures peripheral vision compared to examiner. Assuming the examiner has normal vision
40
What is the extraocular movements?
testing the 6 fields of cardinal gaze
41
What is the weakness extraocular muscles or CN III called?
nystagmus
42
What is the purpose of the Cover/uncover test?
determines the balance mechanism (fusion reflex)
43
Blepharitis
inflammation of the eyelids by stap infxn leading to red, scaly and crusted lids
44
Chalazion
firm nontender nodule on the eyelid; not painful unless inflamed
45
This is the result of a staph infxn of hair follicles
hordeloum or stye
46
Refraction of light spread over a wide area rather than a distinct point on the retina
Astigmatism
47
Adie's Pupil
sluggish pupillary response due to PS nerves that innervate the eye
48
Argyll Robertson
small irregular pupils occurring with CNS disorder (tumor, syphilis, narcotic use)
49
unequal pupillary size eyes either normal or CNS disease
Anisocoria
50
What is the result cranial nerve III damage?
results in a unilateral dilated pupil, no rxn to light and ptosis
51
Horner's Syndrome
blockage of SNS stimulation causing ptois and anhidrosis
52
If a pt has an eye longer than normal what should you consider?
myopia
53
If a pt has a shorter eye than normal what should you consider?
hyperopia