Lecture 2 - Dx Stains Flashcards Preview

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Flashcards in Lecture 2 - Dx Stains Deck (22)
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1

Fluorescein
solubility?
absorption?
emission?
tear film color?
Seidel's sign?
metabolism?

1. water soluble
2. 493 nm (Cobalt blue) vs. 465 nm in blood
3. 520 nm (yellow-green) emission
4. Orange-yellow-green in tear film
5. Seidel's sign: fluorescent green in Bowman's membrane or aqueous humor
6. Hepatic metabolism

2

What is most likely to lead to false results for fluorescein?

tetracaine

3

What are some indications for fluorescein?

- foreign body
- abrasion or ulcer & edema
- alkaline burn: non-soluble particles
- dry eye staining & tear breakup time (TBUT)

4

What does HSV keratitis look like?

Simplex: notice it has a bulb like ends at the fern-like filament. Comes out as bright green.

5

What would herpes zoster look like?

a narrow and thin bright green

6

RGP contact lens adaptation is an indication for what?

Fluorescein

7

What is used to dx tear duct obstruction/epiphora via the Jones Test?

Fluorescein

8

For dx filamentous keratitis?

Fluorescein

9

Quenching (aka fluorescein with an anesthetic) causes an _______________ of IOP evaluation with application tonometry.

UNDER-ESTIMATION

10

Which dye is used for angiography (5ml 10% or 3ml 25% IV or 0.5% PO)?

Fluorescein

11

This genetic defect is manifest in the visual phototransduction cycle. The ATP-binding cassette transporter is defective and leads to a buildup of the toxic metabolite lipofuscin. It is a juvenile macular degradation that develops between the ages of 6-12 years.

Stargardt's disease

12

Name the stain:
absorption is 545-490nm
stains mucus or devitalized tissue
conjunctival and corneal application
viewed under white light or red-free (aka green filter)

rose bengal

13

Name this stain:
mild antiviral properties
photo reactive: RBC hemolysis

rose bengal

14

Rose Bengal is a iodine-based derivative of _________.

fluorescein

15

Which stain for the following indications?
keratoconjunctivitis sicca (KCS)
superior limbis keratoconjunctivitis (SLK)
herpes simplex/zoster
argon laser photocoagulation
metastatic melanoma

rose bengal

16

Name this stain:
stains mucus or devitalized tissue
absorption 567-632 nm
conjunctival and corneal application
viewed under white light or red filter (aka green free)
antiviral properties

lissamine green

17

What are some indications for lissamine green?

- KCS
- superior limbis KC
- herpes simplex/zoster

18

Fluramene is a combination of __________ and ____________.

Lissamine green + fluorescein

19

Fluramene indications are:

simultaneous corneal and conjunctival staining

20

Name this stain (not used in optometric practices):
- water soluble
- absorption 790 nm
- hepatic clearance, t1/2 2-3mins

indocyanine green

21

Which stain for these indications?
- CO (cardiac output), hepatic angiography
- iris/retinal/choroidal angiography: CNVM, ILM
- capsulorrhexis

indocyanine green

22

Indocyanine green contraindications:

- iodine or shellfish allergy (same as rose bengal)
- uremina or heptaology
- pregnancy or lactation