Quiz 4 Flashcards

1
Q

What makes up the outer fibrous layer?

A

Sclera posteriorly and cornea anteriorly

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2
Q

What makes up the middle layer of the internal eye?

A

Choroid posteriorly, and ciliary body/iris anteriorly

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3
Q

Inner layer of the internal eye?

A

Retina

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4
Q

Is the sclera vascular or avascular ?

A

Avascular

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5
Q

What in continuous with the sclera anteriorly ?

A

Cornea

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6
Q

What is a major part of the refractive power of the eye?

A

Cornea

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7
Q

What makes up the uvea ?

A

Iris, ciliary body, choroids

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8
Q

What produces aqueous humor and contains the muscles controlling accommodation ?

A

Ciliary body

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9
Q

Is the choroid vascular or avascular ?

A

Richly vascular

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10
Q

Contraction or relaxation of the ciliary body changes the thickness of what?

A

The lens

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11
Q

What is the sensory network of the eye ?

A

Retina

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12
Q

Where does the optic nerve originate?

A

The optic disc

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13
Q

When does the eye form during gestation??

A

8 weeks

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14
Q

What interprets impulses as visual objects ?

A

Retina

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15
Q

Term infants vision is?

A

Hyperopic 20/400

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16
Q

When Can a infant differentiate colors?

A

6 months

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17
Q

When is adult visual acuity achieved?

A

4 years old

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18
Q

When is lacrimal drainage complete?

A

At birth q

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19
Q

What is the major physiological eye change that occurs with aging>?

A

Presbyopia

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20
Q

What is the order for visual examinations ?

A

External eye inspection, visual acuity, visual fields, pupillary exam, opthalmascopy

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21
Q

What should purples be/do?

A

Pupils are Equal, Round, Reactive, to Light, and Accommodation. (PERRLA)

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22
Q

How far away is the patient away on the snellen chart?

A

20 feet

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23
Q

What is the name for the right eye?

A

Oculus dextra

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24
Q

What is the name of the left eye?

A

Oculus sinistra

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25
Q

What is the name given to both eyes?

A

Oculus uterque

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26
Q

If a patients vision gets better by reading through a hole in a 3x5 card what is this called?

A

Pinhole occluder

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27
Q

What is the name of the card for a close vision test?

A

Rosenbaum near vision card

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28
Q

The superior oblique is innervated by what nerve?

A

Trochlear nerve

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29
Q

Lateral rectus is innervated by?

A

Abducens

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30
Q

For color vision testing what is the name of this test?

A

Ishihara color vision test

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31
Q

What could one find by testing peripheral vision ?

A

Occipital strokes, optic chiasm tumors

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32
Q

What degrees do you test peripheral field with?

A

60 nasal, 90 temporally, 50 superiorly, 70 inferiorly

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33
Q

What are you looking for in accommodation? (Near point reflex)

A

Convergence causes constriction

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34
Q

What are you looking for when you do the corneal light reflex?

A

Shine light at nasal bridge, it both eyes are equal, light will be reflected back equally.

35
Q

What will happen with the indirect/consensual light reflex?

A

Opposite pupil will contract as well

36
Q

What is a normal variant in 20%, muscular tone between eyes?

A

Physiological anisocoria

37
Q

What is it called when the pupil of the effected eye is smaller, and have ipsilateral ptosis and anhidrosis?

A

Horners syndrome

38
Q

What is it called when a Pupil only constricts with accomidation but not response to light?

A

Argyll Robertson pupil

39
Q

When is argyle Robertson pupils seen?

A

Tertiary syphillis, diabetes, and alcoholics, neoplasms.

40
Q

Is argyll robersons pupils always pathological?

A

Yes

41
Q

What is it called when pupil fail to constrict to with both accomidation and and light reflex? May constrict eventually thought ?

A

Adies pupils

42
Q

Are Adies pupils benign or malignant?

A

Benign

43
Q

What is another name for afferent pupillary defect ?

A

Marcus Gunn pupil

44
Q

What is the most common cause of afferent pupillary defect (Marcus Gunn) ?

A

Optic neuritis

45
Q

What are causes of optic neuritis ?

A

TB, MS, lymes disease, CMV, hep B

46
Q

When doing an opthalmic light eye test what should the intensity be set at ?

A

70-80%

47
Q

Patients who are myoptic (near sited) will require what kind of lenses?

A

Minus or red numbers

48
Q

Patients who are hyperopic (far sighted will require what lenses?

A

Green or Plus

49
Q

What is the last thing your look for in the eye?

A

Macula

50
Q

What is an opaque, grayish ring at the periphery of the cornea?

A

Arcus cornealis

51
Q

Is Arcus Cornealis common?

A

Yes

52
Q

What is the cause of Arcus cornealis?

A

Fatty granules in, or hyaline degeneration of the lamellae and cells of the cornea

53
Q

What is another name for a sty?

A

Hordeolum

54
Q

What is an inflammation of a lash follicle ?

A

Sty

55
Q

What is a plugged meibomian?

A

Chalazion

56
Q

What do you distinguish between me Hordeolum and a chalazion >?

A

Hordeolum is painful, chalazion usually isn’t

57
Q

What do you use to treat a hordeolum and or a chalazion?

A

Warm compress

58
Q

What affects the outer lid and is commonly caused by bacteria (staph) and dandruff?

A

Anterior Blepharitis

59
Q

What affects the inner lid and is caused by oil or meibomian glands, acne rosacea?

A

Posterior Blepharitis

60
Q

Is someone has blepharitis who would you send them to?

A

Optometrist

61
Q

What are yellowish plaques that occur near the inner can thus of the eyelid?

A

Xanthelasma

62
Q

Xanthelasma is more common where?>

A

Upper lid

63
Q

What can cause Xanthelasma ?

A

Lowered HDL levels, people with Type II hyperlipidemia

64
Q

What kind of conjunctivitis causes a yellow sticky pus in the eyes? And is highly contagious?

A

Bacterial

65
Q

Does a Pterygium/pinguecula interfere with eyesight?

A

Pterygium (will remove this one)

66
Q

What is a thickening lateral to the iris?

A

Pinguecula

67
Q

What is a wedge shaped growth lateral to the iris?

A

Pterygium

68
Q

In what climates are Pterygium and pinguecula seen?

A

Warm dry

69
Q

What is another name for a key hole eye?

A

Coloboma

70
Q

What is a failure of a fusion on the iris?

A

Coloboma

71
Q

Is a Coloboma responsive to the light reflex?

A

Yes

72
Q

In what condition do you get a white reflex instead of a red reflex?

A

Leukocoria

73
Q

What is the most common cause of leukocoria?

A

Congenital cataract

74
Q

What is the most serious cause of “white eye”

A

Retinoblastoma

75
Q

What are the 3 major causes of amblyopia ?

A

Strabismus, unequal focus, cloudiness

76
Q

What is the most. Common cause of blindness in people under 65?

A

Diabetes resulting in retinopathy

77
Q

What is the most important single risk factors for diabetic retinopathy ?

A

Duration (90% in people who have it more than 15 years)

78
Q

What is the most common form of diabetic retinopathy?

A

Nonproliferative diabetic Retinopathy (NDR)

79
Q

After 20 years of type I diabetes what percent of people have nonproliferative diabetic retinopathy?

A

100%

80
Q

After 20 years of type II diabetes what percent of people have nonproliferative diabetic retinopathy?

A

60%

81
Q

What are clinical features of NDR?

A

Micoanyursm, cotton wool spots, exudates

82
Q

Proliferative Diabetic Retinopathy is characterized by?

A

Growth of new vessels on the surface of the retina

83
Q

What are small yellowish areas of coloration on the retina, because of swelling that cuts off blood supply?

A

Cotton wool spots

84
Q

What is often the earliest recognizable sign of diabetic reitnoneuropathy?

A

Micro aneurysms