Case 3 (vision)

Question 1

What treatments can be used to correct common vision problems (e.g myopia)

Answer 1

• glasses/contacts
• eye patches

Question 2

What type of lens is used to correct myopia?

Answer 2

Concave / diverging

(Myopia = shortsightedness = cornea is too curved)

Question 3

What type of lens is used to correct hyperopia/hypermetropia?

Answer 3

Convex / converging

Hyperopia = longsightedness = cornea is too flat)

Question 4

What is the initial treatment for AACG (acute angle-closure glaucoma)?

Answer 4

Eye drops
(Containing Beta-blockers or prostaglandins)

Question 5

Name a beta-blocker used in eye drops to treat acute angle-closure glaucoma (AACG)…

Answer 5

Timolol

Question 6

How do beta blocker eye drops help AACG?

Answer 6

Reduce aqueous humour production = reduce intraocular pressure

Question 7

What is trabeculectomy?

Answer 7

Laser surgery to punch holes in the trabecula to unblock it

Trabecula = the mesh that aqueous humor passes to flow out the eye

Question 8

How do vitamin A supplements help in eye conditions affecting photoreceptors?

Answer 8

Used to derive more 11-cis retinal

Question 9

How does laser eye surgery work to treat retinal detachment?

Answer 9

Scars the edge of retinal tear, attaching it to back of eye