Ophthalmology Clinical

Question 1

What is the most common presenting age for a squint?

Answer 1

2-3 years

Question 2

Which extra-ocular muscles are affected if the double vision is horizontal (side by side) and vertical (one above the other)?

Answer 2

Horizontal - horizontal muscles (superior/inferior rectus and superior/inferiro oblique)
Vertical - vertical muscles (lateral and medial rectus)

Question 3

What is the most common cause for nerve palsies in >65y?

Answer 3

Vascular causes (then trauma and tumours)

Question 4

What type of sight does a myope have, and what kind of lens and prescription would they have?

Answer 4

Short-sighted - they would have a concave lens, as normally light hits anterior to retina, with a negative prescription

Question 5

What type of sight does a hypermetrope have, and what kind of lens and prescription would they have?

Answer 5

Long-sighted - they would have a convex lens (as light normal hits behind retina) and a positive prescription