lecture 10 opthalmic dyes and evaluation of the lacrimal system Flashcards Preview

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Flashcards in lecture 10 opthalmic dyes and evaluation of the lacrimal system Deck (34)
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1

name the 2 accessory glands that contribute to the aqueous layer of the tear film

wolfring and krause

2

what is the primary source of oxygen for the cornea

the tears

3

what percentage of your tears exits the nasolacrimal system?

75%, (25% is lost thru evaporation)

4

reflex tears afferent pathway is _____ and the efferent pathway is _____

CN5, CN7

5

what are the 3 components of the corneal reflex?

lacrimation, miosis, and blinking

6

what does the "tear prism" refer to?

the tear meniscus

7

What are the 3 components of the tear system?

production, distribution, and drainage

8

the accesory glands contribute _____ _____ while the main lacrimal gland is for _____ _____

basic secretion, reflex stimulation

9

which is the stimulation for lacrimation and secretion of tears?

A) afferent
B) efferent

B) efferent.

10

epiphora is:

A) small protuding bumps found primarily on lower lids
B) overflow of tears
C) lack of tearing
D) where lacrimation is redirected through different channels

B) overflow of tears. caused by either hypersecretion of tears or outflow obstruction (punctal or nasolacrimal duct).

11

Normal tear meniscus height is _____.

0.2mm (less than this indicates dry eye due to poor H2O tear component)

12

soapy tears is an indication of what?

increased fatty acids in tears caused by Meibomium Gland Dysfunction

13

dry eye symptoms are consistent with:

A) more viscous tears
B) less viscous tears

A) more viscous tears. (the lower the viscosity, the smoother the flow of tears)

14

Schirmer 1 measures the tear production of both ____ and ____ , while the Basic tear secretion test measures only _____ and Schirmer 2 measures only _____

basic and reflex, basic, reflex.....
schirmer 1=basic and reflex (no anesthetic), Basic uses anesthetic to check basic only. schirmer 2=uses anesthetic to check for reflex only

15

which 2 uses anesthetic:

A) schirmers 1
B) schirmers 2
C) basic tear secretion test

B) schirmers 2 C) basic tear secretion test

16

Which test would you use a q-tip to irritate the nasal mucosa?

A) Schirmers 1
B) Schirmers 2
C) Basic tear secretion test

B) Schirmers 2

17

1) For Schirmers 1 leave strips in for ____ minutes
2) For Schirmers 2 leave strips in for ____ minutes
3) For Basic tear secretion test leave strips in for ____ minutes

1) 5 min
2) 2 min
3) 5 min

18

1) For Schirmers 1 a normal reading is _____
2) For Schirmers 2 a normal reading is _____
3) For Basic tear secretion test a normal reading is _____

1) greater than 15mm
2) greater than 15mm
3) greater than 10mm

19

What are the mild, moderate, severe measurements for the schirmer's 1 test interpretations

mild reduction=10-15mm, moderate =5-10mm, severe=5mm or less

20

The jones dye tests 1 and 2 are used to check for.....

blockage of the nasal-lacrimal system

21

What s the major difference between Jones 1 and 2?

Jones 1=use generous amounts of dye in eye to see if punctum is closed by having pt blow nose or insert q-tip in nose to check for dye. Jones 2=irrigate nasolacrimal system with saline solution thru inferior punctum

22

What is the main patient complaint that would warrant the jones tests?

epiphora

23

diffuse SPK is indicitive of...

A) viral, medicamentosa
B) dry eyes
C) bacterial infection
D) superior limbic keratitis

A) viral, medicamentosa

24

interpalpebral SPK is indicitive of...

A) viral, medicamentosa
B) dry eyes
C) bacterial infection
D) superior limbic keratitis

B) dry eyes

25

inferior SPK is indicitive of...

A) viral, medicamentosa
B) dry eyes
C) bacterial infection, blepharitis, lagopthalmos, dry eye
D) superior limbic keratitis

C) bacterial infection, blepharitis, lagopthalmos, dry eye

26

superior SPK is indicitive of...

A) viral, medicamentosa
B) dry eyes
C) bacterial infection
D) superior limbic keratitis

D) superior limbic keratitis

27

You put fluorescien in your pt's eyes, you see patches of green glow. this is an indicator of....

A) loss of epithelial cells
B) raised patches of epithelial cells

A) loss of epithelial cells

28

What is medicamentosa?

toxic response to topical mediactions

29

what is lagopthalmos?

incomplete closure of lids, sometimes can happen to patients at night while they sleep

30

what does rose begnal do?

it does NOT accumulate in epithelial defects, it stains devitalized tissue, also stains mucous. also stains where mucous isn't covering.