Slides Of Eye Anatomy

Question 1

What are the palpebrae ?

Answer 1

The eyelids

Meet at the medial and lateral canthus

Question 2

Which muscle inervatred by CN VII closes the eyelid

Answer 2

Orbicularis oculi

Question 3

Which muscle innervated by CN III opens the upper eyelid

Answer 3

Levator Palpebrae superiores

Question 4

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

associated with fear and surprise

Answer 4

Muellers muscle

Question 5

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

Answer 5

Fibrous tunic
Vascular tunic
Nervous tunic

Question 6

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

Answer 6

Cornea

2/3 of the refractive power

Question 7

What is the sclera

Answer 7

White coat of the eye

Question 8

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

Answer 8

Limbus

Question 9

What is the function of the iris

Answer 9

Regulates light into the eye

And is the colored part of the eye

Question 10

What is the innervation of the pupil

Answer 10

ANS innervation

Sphincter – Parasympathetic ANS
Dilator – Sympathetic ANS

Question 11

What is the differnce of the palpebral and bulbar conjunctiva

Answer 11

Palpebral covers the inside of the eyelids

Bulbar covers the sclera

Question 12

What is the function of the ciliary body

Answer 12

Produces the aqueos humor through the ciliary processes

Question 13

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

Answer 13

Ciliary muscle

Question 14

What is the location of the choroid

Answer 14

Located between the sclera and the retina

Provides blood supply to the outer retinal layers

Question 15

The anteroir chamber is located between the

Answer 15

Cornea and the iris

Question 16

What is the refractive power of the lens

Answer 16

1/3

Question 17

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

Answer 17

Retina

Contains 9 layers

Contains the rods and cons

Question 18

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

Answer 18

Macula

Question 19

Are there any rods or cones in the optic disc?

Answer 19

No this is the physiological blind spot

Roughly 15 degrees temporally

Question 20

How many rectus muscles are there of the eye

Answer 20

4

SR, LR, MR ,IR

Question 21

How many oblique muscles are there of the eye

Answer 21

2

SO and IO

Question 22

What are the 3 layers of tears

Answer 22

Oil (outer layer)
-Meibomian Glands

Water (middle)

• Lacrimal
• Accessory Lacrimal

Mucin (inner layer)
-Goblet cells

Question 23

Meds that cause dilation are called..

Answer 23

Mydriatics

Question 24

Define emmetropia

Answer 24

Normal State

Objects at infinity are seen clearly with the unaccommodated eye

Question 25

Define Hyperopia

Answer 25

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

Question 26

Define Myopia

Answer 26

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

Question 27

Define astigmatism

Answer 27

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

Question 28

Define presbyopia

Answer 28

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

Question 29

A minus on a prescription means

Answer 29

Myopia

Question 30

A plus on a prescription means

Answer 30

Hyperopia

Question 31

How is a Eye Rx written for glasses

Answer 31

Sphere,-cylinder x axis

Question 32

What is an eye that is orthophoric

Answer 32

No deviations of the eye

Question 33

What is heterophoria

Answer 33

Normal deviations Not presents on cover uncover test

Question 34

What is heterotropia

Answer 34

Deviated eyes when using both eyes Found with cover uncover test

Question 35

What is the fornix of the eye

Answer 35

The spot that the bulbar and palpebral conjunctiva meet

Question 36

Define keratitis

Answer 36

Inflammation of the cornea

Question 37

What are the layers of the cornea

Answer 37

Epithelium Bowman’s membrane Stroma Descemet membrane Endothelium

Question 38

What is the function of the sclera

Answer 38

Protection

Question 39

What is the thickest part of the sclera

Answer 39

The posterior part

Question 40

What is the episcelra joined to

Answer 40

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

Question 41

What is the highest protein concentration of any body tissue

Answer 41

The lens

Question 42

What are the three layers of the lens

Answer 42

Capsule Cortex Nucleus