Opthalmic Dyes and Evaluation of the Lacrimal System

Question 1

The pathway for Afferent Reflex Tearing is:

a. Cornea/nasal mucous -> nasociliary n. -> long/short ciliary n. -> pain signal to trigeminal ganglion (TG) -> (V1) opthalmic n. -> lacrimal nucleus -> facial n. (Vll)
b. corneal/nasal mucous -> long/short ciliary n. -> nasociliary n. -> (V1) opthalmic n.-> pain signal to trigeminal ganglion (TG) -> lacrimal nucleus -> facial n. (Vll)

Answer 1

b

Question 2

The pathway for Afferent Reflex Tearing is:

a. Cornea/nasal mucous -> nasociliary n. -> long/short ciliary n. -> pain signal to trigeminal ganglion (TG) -> (V1) opthalmic n. -> lacrimal nucleus -> facial n. (Vll)
b. corneal/nasal mucous -> long/short ciliary n. -> nasociliary n. -> (V1) opthalmic n.-> pain signal to trigeminal ganglion (TG) -> lacrimal nucleus -> facial n. (Vll)

Answer 2

b

Question 3

The pathway for Efferent Reflex Tearing is.

Answer 3

GVE fibers travel from CN Vll -> pterygopalantine ganglion -> “hitchhike” with V2 branch (zygomatic) -> infraorbital fissure -> Lacrimal N (V1)

Question 4

The pathway for Efferent Reflex Tearing is.

Answer 4

GVE fibers travel from CN Vll -> pterygopalantine ganglion -> “hitchhike” with V2 branch (zygomatic) -> infraorbital fissure -> Lacrimal N (V1)

Question 5

Blinking is due to stimulation of _____ nucleus.

Answer 5

facial nerve

Question 6

Miosis is due to stimulation of _____ nucleus.

Answer 6

EW

Question 7

What would you suspect if you see “soapy” tears?

Answer 7

increased fatty acids in tears = MGD

Question 8

More viscous tears indicate what?

Answer 8

dry eye symptoms

Question 9

What does oil in the tear cause?

Answer 9

increased tear debris

Question 10

What is Schirmer 1 and 2 tear test testing for?

Answer 10

production of the tear system

Question 11

What is Jones Dye Test 1 and 2 testing of the tear system?

Answer 11

drainage