Eyeball

Question 1

Midpoint of post curvature; pt between the optic disc and the fovia centralis

Answer 1

Post pole

Question 2

The line that joins two poles

Answer 2

Anatomical axis

Question 3

The direction of the light that enters the eyeball for you to be able to see an object;

Answer 3

Visual axis

Question 4

Line that joins the midpoint of the lens and the fovea centralis

Answer 4

Visual axis

Question 5

Most acute vision

Answer 5

Fovia centralis

Question 6

Halfway bet ant and post poles

Answer 6

Equator

Question 7

Divides the eyeball

Answer 7

Equatorial plane

Question 8

divides eyeball into medial (nasal) and lateral (temporal) halves

Answer 8

Vertical meridional plane

Question 9

Divide the eyeball into upper and lower halves

Answer 9

Horizontal Meridional plane

Question 10

The wall of the eye has 3 layers, coats or tunics

Answer 10

Fibrous coat
(Middle) Vascular coat/ uveal tract
(Innermost) nervous coat

Question 11

Outermost coat
Composed of connective tissue, collagen fibers
For protection and maintaining normal dimensions of eyeball

Answer 11

Fibrous coat

Question 12

Middle coat

Where the blood vessels are located

Answer 12

Vascular coat

Uvea / uveal tract

Question 13

Innermost coat

Retina; Sensory rceptor itself; made up of neurons

Answer 13

Nervous coat

Question 14

2 parts of fibrous coat

Answer 14

1. Sclera

2. Cornea

Question 15

Post 5/6
Starts at optic nerve, ends at limbous
WHITE OF THE EYE (opaque)

Answer 15

Sclera

Question 16

Ant 1/6
Most powerful refractive media
Transparent

Answer 16

Cornea

Question 17

3 parts of vascular coat

Answer 17

1. Choroid
2. Ciliary body
3. Iris

Question 18

Going anteriorly, the choroid ends at the insertion of _____________

Answer 18

Recti muscle

Question 19

Layer of blood vessels of graded caliber ( from large to medium to small) supported by connective tissue rich in melanocyte

Answer 19

Choroid

Question 20

Absorbs light rays and prevents it from being reflected to the other parts of the eyeball

Answer 20

Choroid

Question 21

Wedge shaped; ends at the limbous

Answer 21

Ciliary body

Question 22

Thin diaphragm that rests on the ant surface of the lens

Answer 22

Iris

Question 23

Central aperture

Answer 23

Pupil

Question 24

Parts of the nervous coat

Answer 24

Retina

Question 25

The retina is composed of how many layers?

Answer 25

10 layers | Innermost 9 are neural in nature

Question 26

Cells of the pigmented layer of the retina

Answer 26

Pigment epithelium, non nervous, SIMPLE CUBOIDAL EPITHELIAL CELLS melanocytes

Question 27

Termination anteriorly

Answer 27

Scallop

Question 28

Termination of nervous retina

Answer 28

Ora serrata

Question 29

Beyond the ora serrata the continuation of nervous retina will be __________

Answer 29

SIMPLE CUBOIDAL EPITHELIUM | will cover any aspect of ciliary body and iris

Question 30

The inner lining of the ciliary and iris is a double layer of ____________

Answer 30

Neural and non neural simple cuboidal epithelial cells

Question 31

Region of ciliary body

Answer 31

Pars ciliaris retina

Question 32

Region of iris

Answer 32

Pars iridis retina

Question 33

The continuaiton of the nervous retina is *non pigmented* over ___________, but reaching the _____ it becomes *pigmented* too

Answer 33

Ciliary body, iris Sa ciliary body, only outer is pigmented Sa iris, yung double layer is pigmented (inner)

Question 34

Bends the light so that the focus falls exactly or close to the fovea centralis

Answer 34

Refractive media

Question 35

Refractive media

Answer 35

Cornea Aq humor Lens Vitreous

Question 36

Most powerful refractive media

Answer 36

Cornea

Question 37

Responsible for sharp central vision | Located in the center of the macula region of the retina

Answer 37

Fovea centralis

Question 38

Not dynamic; gradually circulates ( found in both ant and post border of the eye

Answer 38

Aq humor

Question 39

Flexible; assumes more convexity or flattened

Answer 39

Lens

Question 40

Transparent gelatinous body of the chambers

Answer 40

Vitreous humor

Question 41

Remnant of hyaloid artery

Answer 41

Hyaloid canal

Question 42

Chambers of the eye

Answer 42

Anterior chamber Posterior chamber Viterous chamber

Question 43

Bounded anteriorly by cornea, posteriorly by the iris and lens

Answer 43

Anterior chamber

Question 44

The posterior chamber is bounded by

Answer 44

Ant: iris Post: zonular ligaments of the lens / suspensory ligaments of the lens

Question 45

The vitreous chamber is bounded by _____

Answer 45

Ant: lens and ligaments Post: retina

Question 46

Thickest posteriorly, fading anteriorly

Answer 46

Sclera

Question 47

Why is the posterior part of the sclera its weakest spot?

Answer 47

It is perforated by fibers of cranial nerve 2, optic nerve

Question 48

Junction bet cornea and sclera

Answer 48

Limbous

Question 49

Thin loose vascularized connective tissue | It has episcleral veins

Answer 49

Episclera

Question 50

Bulk of sclera

Answer 50

Collagen fibers, connective tissue

Question 51

Transition zone bet sclera and choroid Here you will see melanocytes and elspastic fibers It you see this it means you are near the choroid

Answer 51

Lamina fuscia

Question 52

5 layers of the cornea

Answer 52

ABCDE (ant-post, out-in) 1. Ant epithelium 2. Bowman's membrane 3. Connective tissue stroma (substancia propria) 4. Descemet's membrane 5. Endothelium

Question 53

Stratified sq wet; usual mucous membrane; rich in nerve supply; extra sensitive; u do your corneal reflex here; regenerates easily because it is epithelial, injuries are not a problem except if it involves B; cont with conjuctival epithelium

Answer 53

Ant epithelium

Question 54

Basal lamina of ant epithelium Fine collagen fibers Resistant to entry of foreign bodies & MO Scar formation when injured

Answer 54

Bowman's membrane

Question 55

Midpoint of cornea

Answer 55

Ant pole