Chapter 2 Conj/Cornea

Question 1

Asteroid hyalosis

Answer 1

shiny objects floating in vitreous, usually unilateral, reflective, usually no affect on VA, no treatment needed, the shiny objects are calcium soaps

Question 2

Only FDA allergy drop for pregnant woman

Answer 2

Alcaftadine

Question 3

Oral tx for herpes zoster with valacyclovir can cause thrombocytopenia

Answer 3

True

Question 4

Prostaglandin analogs include Xalatan® (latanoprost), Lumigan® (bimatoprost), Travatan Z® (Travoprost), and Zioptan™ (tafluprost), and they work by increasing the outflow of fluid from the eye. They have few systemic side effects but are associated with changes to the eye itself,

Answer 4

True

Question 5

What are topical fluoroquinolones?

Answer 5

Gentamycin, tobramycin

Question 6

Clamydia tx

Answer 6

Doxycyline 100mg po bid x 1 week, or 1g oral azithromycin, or erythromycin or amoxicillian 500mg tid for 1 week (NO DICLOXACILLIN)

Question 7

To get a child’s dose when give an adult dose:

Answer 7

Divide the child’s weight by/150 and multiply by the adult dose.
ie: adult dose is 15ml and child weighs 100lbs.
100/150 x 15 = 10ml 10ml = 2 tsp

Question 8

large number of lymphocytes on corneal scraping indicates:
polymorphomuclear leukocytes:
Eosinophills

Answer 8

viral
bacterial
allergic

Question 9

Allergic to sulfa

Answer 9

No trimethoprim (bacterium)
No erythromycin

Question 10

Allergic to penicillin

Answer 10

Don’t take cephalosporins (ok sulfa drugs)

Question 11

The most common fortified antibiotic regimen for sight-threatening infections (central corneal ulcer that isn’t responding to fluoroquinolones)

Answer 11

tobramycin and cefazolin

Question 12

Treatment for GPC

Answer 12

Lotepredonol

Question 13

When nausea is caused by opioiod use Phenergan (benedryl or diphenhydramine) is contraindicated due to sedative effects (opiods already cause sedative effects)

Answer 13

true

Question 14

Tx for zoster valacyclovir

Answer 14

1000mg po tid

Question 15

Tx for zoster acyclovir

Answer 15

800mg po 5x/day

Question 16

Famciclovir for zoster

Answer 16

500mg po tid

Question 17

Tx HSV keratitis

Answer 17

Acyclovir 400mg 5x/day

Question 18

Herpetic eye disease study: Use oral acyclovir to prophylactically in what dosage?

Answer 18

400 mg po bid

Question 19

Common side effect of valacyclovir

Answer 19

nausea, GI upset, diarrhea, abdominal pain

Question 20

What bone does the optic foramen pass through?

Answer 20

Lesser wing

Question 21

CN 5 branches

Answer 21

V1 ophthalmic (NFL with frontal splitting to become supraorbital and supratrochlear)
V2 Maxillary (splits and becomes infraorbital and zygomatic)
V3 Mandibular

Question 22

Infraorbital nerve

Answer 22

comes off the V2 (maxillary) supplies nerve below eye

Question 23

Supraorbital nerve

Answer 23

comes off V1 (ophthalmic then frontal) supplies nerve above eye

Question 24

What type of muscle is Muller’s muscle and how is it innervated?

Answer 24

Smooth muscle innervated by sympathetic nervous system

Question 25

3 cell types found in foveola

Answer 25

PR, glial cells, Muller cells

Question 26

5 retinal layers of fovea

Answer 26

RPE, PR, ELM, ONL, Henle's, ILM

Question 27

amphotericin B for bacterial or fungal?

Answer 27

fungal