Eyes

Question 1

Cornea is what type of vascular?

Answer 1

Avascular

Question 2

Lacrimal Gland function?

Answer 2

Produce tears, Provide O2 and nutrients and antibodies to Cornea

Question 3

what gland produces watery part of tears?

Answer 3

Lacrimal gland

Question 4

What gland produces oily part of tears?

Answer 4

Tarsal gland

Question 5

3 layers of eyeball

Answer 5

sclera, choriod, retina

Question 6

Choroid is the _____ layer?

Answer 6

vascular

Question 7

2 layers of the Retina?

Answer 7

Pigmented layer & Sensory layer

Question 8

Sensory layer contains what types of receptors?

Answer 8

Rods- dim light, peripheral vision

Cones- bright light, Color perception

Question 9

Sensory layer contains what part of eye?

Answer 9

Optic disk, Macula, Fovea

Question 10

Two chambers of the eye?

Answer 10

Anterior & Posterior

Question 11

Anterior chamber?

Answer 11

filled with Aqueous humor

maintains ocular pressure in the eye

Question 12

canal of Schlemm?

Answer 12

canal before returns to venous circulation

Question 13

things that impede flow of Aqueous humor?

Answer 13

Stress, Occlusion of drainage, Valsava maneuver

Question 14

Normal Intraocular Pressure

Answer 14

12-21 mmHg

Question 15

Posterior chamber

Answer 15

behind lens

filled with vitreous humor, keeps retina in place

Question 16

Lens

Answer 16

attached to ciliary muscle which changes the lens shape to accommodate

Question 17

Lens flattens with?

Answer 17

Far vision

Question 18

Lens curves with?

Answer 18

Near vision

Question 19

Arcus Senilis

Answer 19

grey ring around outer margin of iris that is formed by lipid deposits - does not affect vision

Question 20

Entropion

Answer 20

eyelid inversion, turning inward

Question 21

Ectropion

Answer 21

Eyelid eversion, turning outward

Question 22

Exopthalmos

Answer 22

Protrusion of eyes

Question 23

Enophthalmos

Answer 23

Sunken eyeballs

Question 24

Sclera yellow

Answer 24

Icterus

Question 25

Conjuctiva pallor near outer canthus

Answer 25

Anemia

Question 26

Anisocoria

Answer 26

unequal size of pupils

Question 27

normal pupil diameter

Answer 27

3-5mm

Question 28

Snellen chart

Answer 28

the last line that is read with no more than 2 mistakes Ex: 20/50

Question 29

Nystagmus

Answer 29

Involuntary, rhythmical, repeated oscillations of one or both eyes

Question 30

Tonometry

Answer 30

Measures IOP by determining the resistance of the cornea to indentation

Question 31

Applanation

Answer 31

special probe used to flatten part of the cornea to measure eye pressure and a microscope called a “slit lamp” to examine the eye to determine the amt of pressure needed to displace IO fluid

Question 32

Schiotz Tonometer

Answer 32

uses a plunger to indent cornea. Pressure in eye determined by measuring how much the cornea is indented by a given wt

Question 33

Electric tonometry

Answer 33

small electric probe placed directly on cornea and gives digital readout of IOP

Question 34

pneumotonometry

Answer 34

noncontact method that does not touch the eye but uses a puff of air to flatten the cornea

Question 35

Corneal Staining

Answer 35

place Fluorescein dye into conjuctival sac.

non-intact areas stain a bright green color d/t dye accumulation in divor

Question 36

What does corneal staining help detect?

Answer 36

Diabetic retinopathy, Macular Degeneration, Intraocular tumors