10 - Uvea

Question 1

The iris contains

Answer 1

Sphincter muscle, dilator muscle and stroma

Question 2

Ciliary body contains

Answer 2

Muscle, pigmented, and non pigmented epithelium

Question 3

Nonpigmented epithelium is responsible for creating

Answer 3

Aqueous humor

Question 4

PLR

Answer 4

Pupillary light reflex

Question 5

A direct PLR describes how

Answer 5

Pupil behaves when you shine a light into that eye

Question 6

A consensual PLR describes

Answer 6

How the pupil behaves when you shine a light into the opposite eye

Question 7

In a normal eye, pupil size is a balance between

Answer 7

Tonic activity of the parasympathetic nervous system activating the pupillary muscle. And the tonic activity of the synaptic nervous system activating the pupillary dialtor muscle

Question 8

and in a normal eye, light falling on the retina activates

Answer 8

Photoreceptors which then activate a reflex [athway involving midbrain structures that look back through the parasympathetic pathway to cause pupil to constrict

Question 9

Persistent pupillary membranes

Answer 9

Strands of tissue that extends from the iris collarette to the lens, cornea and other areas of teh iris

Question 10

Persistent pupilllary membrane most common in

Answer 10

Dogs and horses

Question 11

Persistent pupillary membranes inherited

Answer 11

Basenjis and Corgis

Question 12

What happens when your sphincter muscle contracts

Answer 12

Makes pupil smaller

Question 13

what happens when dilator muscle constrict

Answer 13

Opens pupil

Question 14

Heterochromia iridium

Answer 14

Multicolored iris

Question 15

Heterochroma iridis usually seen in

Answer 15

Animals with dilute coat colors

Question 16

Heterochroma iridis animals often lack

Answer 16

Fundic pigmnet and may lack tapetum

Question 17

Anterior uveitis

Answer 17

Inflammation of the iris or ciliary body leading to breakdown of the blood ocular barrier

Question 18

Summarized C/s of anterior uveitis

Answer 18

Aqueous flare, meiosis, pain, redness, corneal edema, decreased intraocular pressure, dyne his, secondary glaucoma , cataract formation, ordinal changes

Question 19

Episcleral injection usually indicates

Answer 19

Intracellular disease

Question 20

Scleritis can cause

Answer 20

Episcleral injection

Question 21

Why does anterior uveitis cause decreased intraocular pressure

Answer 21

Decrease aqueous production from the ciliary body

Question 22

Synechia

Answer 22

Iris sticking to lens or sticking to the cornea

Question 23

Iris adheres with uveitis because

Answer 23

Fibrin is sticky

Question 24

Aqueous flare is pathognomic for

Answer 24

Anterior uveitis

Question 25

With anterior uveitis why does secondary glaucoma occur

Answer 25

Iris - bombe or cells accumulating in the iridocorneal angle e

Question 26

Aqueous flare

Answer 26

Leaking of cells and protein from uveal vessels

Question 27

How do you look for aqueous flare

Answer 27

Focused light source

Question 28

Stage aqeoues humor

Answer 28

1 -4

Question 29

Bombe

Answer 29

Phenomenon in which the pupil becomes synechiaed posterioly to the lens for 360 degreee

Question 30

What irdial changes occurs with asteroid uveitis

Answer 30

Iris may become darker, congested and or swollen

Question 31

Keratic preceipitaies

Answer 31

Protein and cells that have settled out against the cornea

Question 32

Miosis looks like

Answer 32

Small pupil

Question 33

Cataract formation

Answer 33

Abnormal metabolism in the lens due to abnormal aqueous

Question 34

What are the goals of treatment for anterior uveitis

Answer 34

Decrease pain, prevent synechia, and decrease cellular and protein exudation to prevent glaucoma

Question 35

How do you prevent synechia

Answer 35

Dilate and keep pupil moving

Question 36

What parasympatholyric drug do you use with uveitis

Answer 36

Atropine

Question 37

Why do you use corticosteroids with anterior uveitis

Answer 37

Immunosuppressive, inhibit arachidonic acid metabolism, anti fribrotic, and inhibit neovascularizaiton

Question 38

What will not penetrate

Answer 38

Hydrocortisone

Question 39

Indications for corticosteroids

Answer 39

Inflammatory uveitis, immune mediated, reduction in scarring

Question 40

Contraindications of corticosteroids

Answer 40

Corneal ulcer or active infection

Question 41

Side effects of corticosteroids

Answer 41

Retard corneal epitheliazation, activate MMP, encourage infection

Question 42

Non steroidal anti inflammatory agents MOA

Answer 42

Cycloocygenase inhibition

Question 43

When do you use non steroidal anti inflammatory agents

Answer 43

Inflammatory, adjunct to steroid therap

Question 44

Topical prep for NSAID

Answer 44

Ketorolac, flubiprofen, diclofenac

Question 45

Contraindications of NDAIDS

Answer 45

Inhibit ulcer healing

Question 46

Differential etiology for anterior uveitis

Answer 46

Infections, lens induced, secondary, neoplasia , trauma, uvodermatologic sundrome, cardiovascular, iropathic

Question 47

Lens induced uveitis

Answer 47

Local immmune mediated causes of anti over uveitis that occurs when cataracts develop to the phase of hypermaturiy in which lens protein liquefy and leak out of the lens capsule

Question 48

What must be present for lens induced uveitis to occur

Answer 48

Cataract

Question 49

Secondary uveitis

Answer 49

Spread of inflammation from the sclera or cornea

Question 50

Uveoadermatologic syndrome

Answer 50

Autoimmune disease against melanocytes