Gluaucoma

Question 1

What is glaucoma

Answer 1

It’s an eye condition where the optic nerve is damaged by the pressure of the fluid inside the eye. This may be because the pressure is higher than normal or because of the weakness of the optic nerve

Question 2

Is astigmatism a risk factor for glaucoma

Answer 2

No

Question 3

Aqueous flow travels from

Answer 3

-ciliary body
-pupil
- trabecular mesh work
-schlemms canal

Question 4

What are the two types of glaucoma

Answer 4

Open and closed angle

Question 5

What happens in open angle

Answer 5

In open angle glaucoma the drainage angle is open, but there is reduced aqueous drainage due to clogging or degeneration of the trabecular mesh work. This leads to an elevation in intra-ocular pressure.

Question 6

What happens in closed angle

Answer 6

In closed angle glaucoma the anterior chamber angle is closed, this physical closure prevents aqueous draining, resulting in intra-ocular rapidly reaching high levels

Question 7

What can happen with closed angle glaucoma

Answer 7

Can lose vision within hours

Question 8

What happens with patients with glaucoma

Answer 8

The neural retinal rim is thinned down and it causes the optic cup to become larger. This occurs due to the ganglion cells dying

Question 9

What are 3 features of ocular hypertension

Answer 9

Normal optic nerve
Normal visual field
Elevated intraocular pressure

Question 10

What are the diagnostic tests for:
-optic nerve head
-central corneal thickness
-visual field
-anterior chamber angle examination
-infra ocular pressure
-retinal nerve fibre layer

Answer 10

-volk examination
-pachymeter
-perimetry
-gonioscopy
-tonometer
-OCT