Drugs in the eyes practical Flashcards Preview

Year 1 (PCS & Cases 1-6) > Drugs in the eyes practical > Flashcards

Flashcards in Drugs in the eyes practical Deck (11)
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1
Q

Is this a healthy or unthealthy retina?

A

healthy retina

2
Q

What condition looks like this through the opthalascope?

A

Diabetic retinopathy

3
Q

Label the parts of this healthy retina.

A
4
Q

What condition looks like this through the opthalmascope?

How can you tell?

A

Papilloedema.

The optic disc is swollen and has moved ‘outwards’ due to the rasied intracranal pressue.

5
Q

What condition looks like this through the opthalmascope?

How can you tell?

A

Maliganat hypertension.

Flame haemorrhages are present.

6
Q

What condition looks like this through the opthalmascope?

How can you tell?

A

Glaucoma.

The optic disc has cupped ‘inwards’ due to rasied intraocular pressures.

7
Q

What condition looks like this through the opthalmascope?

How can you tell?

A

Age related macular degeneration.

Atrophy of the macula leads to permanent loss of cones and rod cells.

8
Q

What are the names of the two muscles in the eye?

Innervation?

A

Radial pupillary dilator - sympathetic

Circular pupillary sphincter - parasympathetic

9
Q

When you want to look at an object close up, what muscle movements take place and how does the lens change?

A

Ciliary pupillary muscle contracts. (action of paras innervation)

Suspensory ligaments slacken.

Lens relaxes (fat and round) - to bend more light

10
Q

When you want to look at an object far away / you have no parasympathetic innervation, what muscle movements take place and how does the lens change?

A

Circular pupillary muscle relaxes.

NO paras innervation e.g. Tropicamide (AcH inhib)

Lens gets stretched as suspensory ligaments tighten.

Lens becomes thin and wide - less light in.

11
Q

When testing drugs, a clinical trial should be what four things?

A
  1. Controlled
  2. Blinded (ideally doube blinded)
  3. Randomised
  4. Crossed over