Opthal 2

Question 1

What does the uveal tract consist of + functions of each

Answer 1

1. Iris: controls amount of light entering lens via caring size aperture. Can dilate via SNS dilator pupillae. Can constrict via PSNS sphincter pupillae
2. Ciliary body: helps aq humour production and attachment of lens via suspensory ligaments
3. Choroid: allows passage of bv/nerves, removes waste products from retina, supplies nutrients to outer half retina, absorbs light passing through retina

Question 2

Iritis:

• Definition
• Risk factors
• Causes
• Symptoms
• Signs
• Investigations
• Management
• Complications

Question 3

Uveitis:

• Definition
• Symptoms
• Signs
• Management
• Complications

Question 4

Conjunctivitis:

• Definition
• Risk factors
• Causative organisms for bacterial + viral
• Symptoms
• Signs
• Management

Question 5

Layers of eyeball

Answer 5

1. Outer part - sclera + cornea (provides attachment for extra ocular muscles)
2. Middle - uveal tract
3. Inner - retina

Question 6

Scleritis:

• Definition
• Causes
• Symptoms
• Signs
• Management
• Complications

Question 7

Episcleritis:

• Definition
• Risk factors
• Symptoms
• Investigations
• Management

Question 8

• Functions of cornea
• Layers of cornea

Answer 8

1. Maintain transparency
2. Ocular protection
3. Refracts incoming light

Layers:
1. Epithelium non keratinised sq layer
2. Bowmans - any trauma below this level leads to cornea scarring
3. Stroma coll 1 fibres held by keratinocytes
4. Descemets
5. Endothelium maintains hydration, doesn’t regenerate

Question 9

Keratitis:

• Definition
• Risk factors
• Causes
• Symptoms
• Signs
• Investigations
• Management

Question 10

Function of aqueous humour

Answer 10

Supply nutrients to cornea
Maintain adequate pressure in eye (11-21mmhg)

Can reduce IOP via alpha2 rec reducing production + inc uveoscleral outflow
Can increase IOP via beta2 rec by inc sq production

Question 11

Primary open angle glaucoma:

• Definition
• Risk factors
• Symptoms
• Investigations
• Management + side effects of medications
• Risk factors for secondary open angle glaucoma

Question 12

Acute angle closure glaucoma:

• Definition
• Risk factors
• Symptoms
• Signs
• Investigations
• Management: immediate, definitive
• Complications