Unit 1:

Question 1

When neutralizing refractive errors with the retinoscope, what position should the collar be in?

Answer 1

All the way down

Question 2

When the collar on the retinoscope is all the way down does this produce convergent or divergent light?

Answer 2

Divergent

Question 3

When the collar on the retinoscope is all the way up, does this produce convergent or divergent light?

Answer 3

Convergent

Question 4

For retinoscopy, what should the fixation target be?

Answer 4

20/200 letter (the big E)

Question 5

For retinoscopy fogging is not necessary for these patients

Answer 5

-aphakes
-pseudophakes
-patients over 72

Question 6

The power found using the retinoscope streak is applied to the optical Cross where?

Answer 6

90 degrees away.
-streak neutralized at 90 is recorded on the 180 meridian

Question 7

This is the average or normal intraocular pressure

Answer 7

10-22 mmHg

Question 8

What is the route that aqueous humour takes from being made to being drained?

Answer 8

Ciliary body➡️
Pupil➡️
Anterior chamber➡️
Trabecular meshwork➡️
Schlemm’s canal➡️
Episcleral veins➡️
Systemic bloodstream

Question 9

What are extraocular influences for pressure?

Answer 9

-body position
-diurnal curve
-IOP fluctuates 2-6mmHg in 24 hrs
-ocular profusion pressure
-blood pressure⬇️ IOP⬇️

Question 10

What is a Perkins tonometer?

Answer 10

Hand-held, portable Goldmann tonometer with a weird plunger at the top