Eye Anatomy

Question 1

Extraocular

Answer 1

means out side of the eye

Question 2

Intraocular

Answer 2

means within the eye

Question 3

Choroid

Answer 3

opaque middle layer, contains many blood vessels provides the blood supply for the entire eye. Most reflective surface

Question 4

Sclera

Answer 4

White of the eye. Delicate layer. Maintain the the shape of the eye. covered by conjunctiva.

Question 5

Retina

Answer 5

Sensitive innermost layer lines posterior segment of the eye. Receives never impulses and transmits them to the brain.

Question 6

Ocular Adnexa

Answer 6

Orbit, eye muscles, eyelids, eyelashes, conjunctiva and lacrimal apparatus.

Question 7

6 eye muscles

Answer 7

Lateral rectus, medial rectus, superior oblique, Inferior oblique, superior rectus and inferior rectus.

Question 8

Lateral rectus

Answer 8

moves in lateral direction, pulled away from the nose

Question 9

medial rectus,

Answer 9

moves eye toward the nose horizontally

Question 10

superior oblique

Answer 10

moves eye downward and away from the nose. Medial rotation

Question 11

Inferior oblique

Answer 11

moves the eye upward and towards the nose. Lateral rotation

Question 12

superior rectus

Answer 12

attached at the top of the eye and It moves the eye upwards

Question 13

inferior rectus

Answer 13

It moves the eye downward. Muscle attached at the bottom of the eye.

Question 14

Lacrimal Gland

Answer 14

secrete tears

Question 15

lacrimal sac

Answer 15

enlargement of the upper portion of the lacrimal duct

Question 16

lacrimal duct

Answer 16

the passageway that drains excess tears into the nose

Question 17

Crystalline lens

Answer 17

is clear, flexible, curved structure that focuses images on the retina

Question 18

Epithelium

Answer 18

To block foreign object from entering the eye. Absorbs nutrient for the cornea

Question 19

Bowman’s layer

Answer 19

Function is still unknown. Can’t guarantee vision when healing. Contains collagen.

Question 20

Stroma

Answer 20

the thickest layer. Contains collagen and water (78%). Maintained my crystalline protein

Question 21

Descemet’s Membrane

Answer 21

Can regenerate. Barrier against infection and Injury.

Question 22

Endothelium

Answer 22

last layer doesn’t regenerate. Pumps excessive fluid.

Question 23

Esotropia

Answer 23

horizontally move inward towards the nose

Question 24

Exotropia

Answer 24

horizontally moves outward away from the nose

Question 25

Hypertropia

Answer 25

vertically move upward

Question 26

Hypotropia

Answer 26

vertically one eye moves downward

Question 27

Diplopia

Answer 27

also known as double vision. Perception of 2 images of a single object

Question 28

Outline the flow of Aqueous Humor

Answer 28

This fluid is constantly filtered starting from the posterior chamber through the pupil to the anterior chamber exiting the inner through the trabecular meshwork which consist of tiny pores until it reaches the Schlemm’s canal. From there it drains out of the eye through the aqueous veins and enters the sclera.

Question 29

Puncta

Answer 29

Act like little valances to take tears out of the eye

Question 30

Vitreous humor

Answer 30

This is a soft, clear, jelly like mass that contains millions of fine fibres. These fibers, which are attached to the surface of the retina, help the eye maintain its shape

Question 31

Rods and cones

Answer 31

The rods and cones of the retina receive images that have passed through the lens of the eye. These images are converted into nerve impulses and transmitted to the brain

Question 32

Macula

Answer 32

Is a clearly defined yellow area in the centre of the retina. This is the area of sharpest central vision

Question 33

fovea centralis

Answer 33

Is a pit in the middle of the macula. Colour vision is the best in this area because It contains a high concentration of cones

Question 34

Optic disc

Answer 34

Also known as a blind spot, is a small region in the eye with a nerve endings of the retina enter the optic nerve.

Question 35

Optic nerve

Answer 35

Transmits these nerve impulses from the retina to the brain

Question 36

Uveal Tract

Answer 36

Is the pigmented layer of the eye. It has rich blood supply in consist of the choroid, ciliary body, and the iris

Question 37

Aqueous chamber

Answer 37

Located behind the cornea and in front of the iris

Question 38

Ciliary body

Answer 38

Located in the choroid, is a set of muscles and suspensory ligaments that adjust the thickness of the lens to refines the focus of light in the retina

Question 39

Accommodation

Answer 39

The process whereby the eye makes adjustments for seeing objects at various distances

Question 40

Refraction

Answer 40

Is the ability of the lens to bend light rays so they focus on the retina

Question 41

What is ocular mobility?

Answer 41

To see how eye muscles work together in various direction and gaze (12 muscles rectus and oblique)

Question 42

What is the meaning of coming word Blephar/o

Answer 42

Eyelid

Question 43

Some ophthalmic solutions may lose their potency if not stored properly

Answer 43

Ture

Question 44

What is the meaning of ocul/o

Answer 44

eye