Ocular Trauma

Question 1

Used to identify areas of epithelial loss in the eye

Answer 1

Fluorescein dye

Question 2

For corneal abrasions and conjunctivitis Rx =

Answer 2

Chloramphenicol

Question 3

Two Signs of a blowout fracture

Answer 3

On imaging = tear drop sign

Cant elevate eye past midline

Question 4

Hyphaemia =

Answer 4

Blood in anterior chamber

Question 5

Important sequelae of blunt trauma =

Answer 5

Retinal detachment as any hole in it and vitreous can get underneath it

Question 6

Commotio retina =

Appearance

Answer 6

Bruised

Pale and oedematous

Question 7

___ => no light perception at all

Answer 7

Optic nerve avulsion

Question 8

Siedel test:
Procedure =
Purpose =

Answer 8

Place fluorescein strip on eye, look through cobalt blue filter
+ve result = turns pale/ changes shape due to dilution by aqueous leakage through cornea

Question 9

Scleral laceration Rx

Answer 9

Sx - primary globe repair

Question 10

Treatment of foreign body on cornea

Answer 10

LA
Slit lamp
Hyodermic needle to lift it off

Question 11

Features that increase the suspicion of corneal penetration by a foreign body

Answer 11

Pupil irregular
Ant chamber shallow
Localised cataract

Question 12

For intraocular foreign bodies always ___

Answer 12

Xray

In two positions with eye having moved - if moves with eye its intraocular

Question 13

Alkali burn to the eye :
\_\_+\_\_ penetration
\_\_\_ changes to conjunctiva and cornea => \_\_\_\_
Penetrates \_\_\_\_
Corneal \_\_\_\_

Answer 13

Easy rapid
Cicatrising changes => adhesions
Intraocular structures
Scarring

Question 14

Acid burns to eye:
Coagulates ___
___ penetration

Answer 14

Proteins

Little

Question 15

Sign of an alkali burn that is due to limbal ischaemia because of no corneal blood supply

Answer 15

China white sclera

Question 16

Treatment for a chemical burn of the eye

Answer 16

Hx of what it was
Evert eyelid and sweep
Check toxbase
Check pH with indicator paper
Irrigate (>=2L saline/ until pH is normal)
Slit lamp to check outcome