Eye trauma

Question 1

How does a corneal abrasion present?

Answer 1

Intense pain
Lacrimatio
Photophobia
Sensation of foreign body

Question 2

What colour does a corneal abrasion go with fluroscein?

Answer 2

Green

Question 3

WHat muscle is most likely damaged in ocular trauma?

Answer 3

Inferior rectus.

Question 4

What sign seen on X-ray for blow out fracture?

Answer 4

Tear drop sign in maxillary sinus.

Question 5

How do you manage an acid/alkali burn?

Answer 5

Irrigate with loads of saline.

Question 6

What is the weakest part of the orbit?

Answer 6

Medial and inferior walls (ethmoid and palatine bones)

Most likely place for a blowout fracture to occur.

Question 7

What passes through the superior orbital fissure?

Answer 7

CN 3

CN 4

Cn V1

Cn 6

Question 8

Where is visual acuity at its highest?

Answer 8

Fovea (centre of macula)

Question 9

Where is the blind spot?

Answer 9

The optic disc.

Question 10

Rectus muscles move in what plane?

Answer 10

The abducted plane

Question 11

Oblique muscles move in what plan

Answer 11

The addicted plane.

Question 12

Function of superior oblique muscle

Answer 12

Depression from abducted position.

Question 13

Function of Inferior oblique?

Answer 13

Elevation from abducted position.

Question 14

Blink reflex afferent and efferent?

Answer 14

Efferent = CN VII

Afferent = CN V1

Question 15

Accommodation afferent and efferent?

Answer 15

Afferent = CN II

Efferent = CN III

Question 16

CN 6 is the longest intracranial nerve which makes it the most susceptible to compression or stretch with raised ICP.

Answer 16

CN II = papilloedma