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Senoir 21-2 > Slides Of Eye Anatomy > Flashcards

Slides Of Eye Anatomy Flashcards

1
Q

What are the palpebrae ?

A

The eyelids

Meet at the medial and lateral canthus

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2
Q

Which muscle inervatred by CN VII closes the eyelid

A

Orbicularis oculi

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3
Q

Which muscle innervated by CN III opens the upper eyelid

A

Levator Palpebrae superiores

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4
Q

Which muscle innervated by the sympathetic ANS ascites in opening the eyelids?

associated with fear and surprise

A

Muellers muscle

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5
Q

What are the three concentric spheres of the globe of the eye ball

A

Fibrous tunic
Vascular tunic
Nervous tunic

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6
Q

What is the “front window of the eye” and is the major refractive surface of the eye

A

Cornea

2/3 of the refractive power

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7
Q

What is the sclera

A

White coat of the eye

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8
Q

What is the name of the structure where the sclera meets the cornea

A

Limbus

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9
Q

What is the function of the iris

A

Regulates light into the eye

And is the colored part of the eye

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10
Q

What is the innervation of the pupil

A

ANS innervation

Sphincter – Parasympathetic ANS
Dilator – Sympathetic ANS

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11
Q

What is the differnce of the palpebral and bulbar conjunctiva

A

Palpebral covers the inside of the eyelids

Bulbar covers the sclera

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12
Q

What is the function of the ciliary body

A

Produces the aqueos humor through the ciliary processes

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13
Q

What is the muscle that allows for the focus of near objects

A

Ciliary muscle

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14
Q

What is the location of the choroid

A

Located between the sclera and the retina

Provides blood supply to the outer retinal layers

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15
Q

The anteroir chamber is located between the

A

Cornea and the iris

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16
Q

What is the refractive power of the lens

A

1/3

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17
Q

What is the “fundus” or the neural lining of the inside of the eye

A

Retina

Contains 9 layers

Contains the rods and cons

18
Q

What is the structure at the posterior pole of the retina
That is responsible for fine, central vision

And contains of third of all nerve fibers

A

Macula

19
Q

Are there any rods or cones in the optic disc?

A

No this is the physiological blind spot

Roughly 15 degrees temporally

20
Q

How many rectus muscles are there of the eye

A

4

SR, LR, MR ,IR

21
Q

How many oblique muscles are there of the eye

A

2

SO and IO

22
Q

What are the 3 layers of tears

A

Oil (outer layer)
-Meibomian Glands

Water (middle)

  • Lacrimal
  • Accessory Lacrimal

Mucin (inner layer)
-Goblet cells

23
Q

Meds that cause dilation are called..

A

Mydriatics

24
Q

Define emmetropia

A

Normal State

Objects at infinity are seen clearly with the unaccommodated eye

25
Q

Define Hyperopia

A

Farsighted

The axial length of the eye is too short causing the image to fall behind the retina

26
Q

Define Myopia

A

Nearsighted

The axial length of the eye is too long causing the image to fall in front of the retina

27
Q

Define astigmatism

A

Elliptical shape
Refracting power of the cornea and lens is different in one meridian that the other

Refractive errors in the horizontal and vertical axis differ

28
Q

Define presbyopia

A

Loss of accommodation
Loss of the ability to focus on near objects is the typical manifestation

Caused by progressive hardening of lens and the loss of ability to change shape

29
Q

A minus on a prescription means

A

Myopia

30
Q

A plus on a prescription means

A

Hyperopia

31
Q

How is a Eye Rx written for glasses

A

Sphere,-cylinder x axis

32
Q

What is an eye that is orthophoric

A

No deviations of the eye

33
Q

What is heterophoria

A

Normal deviations

Not presents on cover uncover test

34
Q

What is heterotropia

A

Deviated eyes when using both eyes

Found with cover uncover test

35
Q

What is the fornix of the eye

A

The spot that the bulbar and palpebral conjunctiva meet

36
Q

Define keratitis

A

Inflammation of the cornea

37
Q

What are the layers of the cornea

A

Epithelium

Bowman’s membrane

Stroma

Descemet membrane

Endothelium

38
Q

What is the function of the sclera

A

Protection

39
Q

What is the thickest part of the sclera

A

The posterior part

40
Q

What is the episcelra joined to

A

Joined to Tenon’s capsule by strands of connective tissue

Tenon’s capsule is a sheet of dense connective tissue that encases the globe

Forms sleevelike sheaths that cover the tendons at EOM insertions

41
Q

What is the highest protein concentration of any body tissue

A

The lens

42
Q

What are the three layers of the lens

A

Capsule
Cortex
Nucleus

Senoir 21-2 (77 decks)

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