Lecture 14 - Ocular Drug Delivery

Question 1

Define cornea

Answer 1

envelope over iris and pupil

Question 2

Define pupil

Answer 2

Dark central zone of the iris that admits light towards the retina

Question 3

Define iris

Answer 3

Coloured part of eye (protective envelope)

Question 4

Define conjunctiva

Answer 4

Clear mucus membrane partly covering eye and eyelids

Question 5

Define aqueous humour

Answer 5

Between iris and lens - bathes and nourishes the lense

Question 6

Define lens

Answer 6

Focus light towards retina, funnels the light towards the back

Question 7

Define vitreous humour

Answer 7

Eyeball shape and shock absorption - lives inside the yellow space inside your eyeball

Question 8

Define choroid

Answer 8

Mostly blood vessels (oxygen and nutrients to outer part of the retina)

Question 9

Define retina

Answer 9

light sensing sends signals to brain

Question 10

Define the functions of the eye

Answer 10

is a sensory organ
take light from our surroundings and convert to nerve impulses
optic nerve transmits signals to the brain
brain translates signal into the image, image is produced from all the light being absorbed
gauge distances

Question 11

Name the two segments of the eye

Answer 11

anterior (front) and posterior (back)

Question 12

Define dry eye

Answer 12

lack of tears produced

Question 13

Define blepharitis

Answer 13

Inflamed eyelids

Question 14

Define conjunctivitis

Answer 14

pink eye
inflammation of conjunctiva

Question 15

Define uveitis

Answer 15

inflamed uvea tract

Question 16

Define keratoconus (KCN)

Answer 16

Gradual thinning of cornea

Question 17

Define cataract

Answer 17

A portion of lens hardens and becomes cloudy

Question 18

What causes cataract injury?

Answer 18

Age
Eye injury
Previous surgery
Certain medications

Question 19

Define age-related macular degeneration (AMD)

Answer 19

Degeneration of central part of retina (macula) causing abnormal loss of focus

Question 20

Define central serous retinopathy (CSR)

Answer 20

Disorder of the outer blood-retinal barrier. Fluid build-up under retina.

Question 21

Define glaucoma

Answer 21

Progressive neuropathy (optic nerve damage)
Fluid build-up changes intraocular pressure above the normal range

Question 22

What causes glaucoma?

Answer 22

Age
Ethnicity
Genetic profile
Other underlying diseases

Question 23

What are the types of glaucoma?

Answer 23

Primary open angle glaucoma, acute angle glaucoma, secondary glaucoma