9 Prescribing For Near

Question 1

What’s the key thing in prescribing for near?

Answer 1

knowing the patients!

Truck driver vs lawyer is an example

Question 2

What’s tentative add? How can you assess it?

Answer 2

Estimation of the power a patient needs in the near.

Amp ACC

Balancing PRA and NRA

Addition based on age

Addition of plus lenses to best acuity

Question 3

How do you find PRA? Where is the target located? You want to use one line above threshold, what does this mean?

Answer 3

Give the patient minus lenses

40cm

1 line above their best acuity (ex: best is 20/20…use 20/25 line)

Question 4

When balancing PRA and NRA:

Use a line ______ threshold on near card where target is at __cm.

NRA add ____ power till target blurs and is sustained

PRA add ______ power till the target blurs and the blur is sustained

Add Power that _______ NRA and PRA is the tentative add.

TA= 1/2(___+____

Answer 4

Above. 40cm

Plus

Minus

Equals

NRA+PRA

Question 5

For patients around the age of 50-54, what add power would you give them?

Answer 5

+2.00D