Eye quiz page – The Emergency Medicine Manual

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Eyes

This is a 10 question quiz about eyes.

The questions are randomly drawn from a bank of 52 questions so will be different each time you take it.

1 / 10

1. Which one of the following slit lamp settings would be best to obtain a good optical section?

a) illumination source at 70 degrees to the cornea, slit width 1.0 mm, slit height 15 mm

b) illumination source at 45 degrees to the cornea, slit width 1.00 mm, slit height 15 mm

c) illumination source at 45 degrees to the cornea, slit width 0.25 mm, slit height 8 mm

d) illumination source at 70 degrees to the cornea, slit width 0.25 mm, slit height 8 mm

The preferred slit lamp settings to obtain an optical section are:

illumination source at 45 degrees

slit width 0.25 mm

slit height 8 mm

initial low to medium magnification (7-10X)

increase to 16-20 X once a section obtained

move the illumination source to the opposite side when crossing the mid-line of the cornea

The preferred slit lamp settings to obtain an optical section are:

illumination source at 45 degrees

slit width 0.25 mm

slit height 8 mm

initial low to medium magnification (7-10X)

increase to 16-20 X once a section obtained

move the illumination source to the opposite side when crossing the mid-line of the cornea

2 / 10

2. A 25-year-old man complains of persistent blurring to his left eye one day after sustaining a blow to the area in an altercation.
VAR is 6/6, VAL 6/60, correcting to 6/6 with pin hole. Pupils are equal, round, and reactive.
Fundoscopy is normal at -12 diopters. Slit lamp examination is unremarkable.
Which one of the following is the most likely cause?

a) Hyphema

b) Retinal detachment

c) Macular oedema

d) Lens dislocation

3 / 10

3. Normal mean intra-ocular pressure in adults is approximately

a) 20mmHg

b) 10mmHg

c) 15mmHg

d) 18mmHg

Normal mean intra-ocular pressure in adults is approximately 15mmHg.

Normal mean intra-ocular pressure in adults is approximately 15mmHg.

4 / 10

4. Which one of the following causes of sudden visual loss usually does not have a relative afferent pupillary defect?

a) Central retinal artery occlusion

b) Optic neuritis

c) Posterior vitreous detachment

d) Retinal detachment

Posterior vitreous detachment is the only one of these conditions that does not cause a RAPD.

Posterior vitreous detachment is the only one of these conditions that does not cause a RAPD.

5 / 10

5. The ocular US shows

a) Intra-ocular ascaris infection

b) Vitreous haemorrhage

c) Lens dislocation

d) Retinal detachment

The US shows a retinal detachment.

The US shows a retinal detachment.

6 / 10

6. Timolol acts on the eye to

a) Increase corneal permeability

b) Decrease aqueous humour production

c) Increase aqueous humour absorption

d) Produce miosis

Timolol acts on the eye to reduce aqueous humour production.

Timolol acts on the eye to reduce aqueous humour production.

7 / 10

7. Tropicamide may do all of the following EXCEPT

a) Decrease visual acuity measured with pin hole device

b) Decrease synechiae formation in anterior chamber uveitis

c) Increase intraocular pressure in susceptible patients

d) Decrease pain secondary to iridocyclitis

8 / 10

8. When moving towards the eye at the start of performing fundoscopy it is best to turn the ophthalmoscope dial

a) anti-clockwise to increase the diopter setting and focus

b) clockwise to increase the diopter setting and focus

c) clockwise to reduce the diopter setting and focus

d) anti-clockwise to reduce the diopter setting and focus

When moving towards the eye at the start of performing fundoscopy it is best to turn the ophthalmoscope dial clockwise to reduce the diopter setting and focus.

When moving towards the eye at the start of performing fundoscopy it is best to turn the ophthalmoscope dial clockwise to reduce the diopter setting and focus.

9 / 10

9. Sudden onset of unilateral orbital pain, photophobia , lacrimation and blepharospasm suggests a diagnosis of

a) Closed angle glaucoma

b) Blepharitis

c) Open angle glaucoma

d) Iritis

10 / 10

10. Painful unilateral generalised orbital swelling that was gradual onset and progressive over a week is most likely due to

a) Sarcoidosis

b) Idiopathic orbital inflammation

c) Carotocavernous fistula

d) IgG4 related disease

An orbital pseudotumour is the most likely cause as: sarcoidosis usually causes enlargement of the lacrimal glands in isolation; IgG4 disease is usually bilateral; and carotocavernous fistula is usually sudden onset.

An orbital pseudotumour is the most likely cause as: sarcoidosis usually causes enlargement of the lacrimal glands in isolation; IgG4 disease is usually bilateral; and carotocavernous fistula is usually sudden onset.

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