Reading a Prescription

Question 1

OD means…

Answer 1

Right eye

Question 2

OS means…

Answer 2

Left eye

Question 3

Nearsightedness means…

Answer 3

See better NEAR than far

Question 4

Farsightedness means…

Answer 4

See better FAR than near

Question 5

Astigmatism means…

Answer 5

Patients with astigmatism have distortion of vision in addition to blurring of vision

Question 6

SPH

What does it stand for, what are the possible values, and what do each of the possible values mean?

Answer 6

Sphere- Main correction

>> *N*egative values indicate *n*earsightedness, while positive values indicate farsightedness.

>> “PL” or “DS” in place of a numerical value means that there is no correction- 0.00- for the sphere.

Question 7

CYL

What does it stand for, what are the possible values, and what do each of the possible values mean?

Answer 7

Cylinder- For astigmatism CYL must both be negative or both be positive for OS and OD

Question 8

Axis

What does it stand for, what are the possible values, and what do each of the possible values mean? How does it relate to CYL?

Answer 8

Axis of tilt- for astigmatism >> 0-180 (no negatives) >> Cannot have Axis without CYL or CYL without Axis

Question 9

ADD

What does it indicate, and what do we do with that information?

Answer 9

Add power- for reading (ignore)

Question 10

Prism

What does it indicate, and what do we do with that information?

Answer 10

Information for muscular eye strain- We don’t fill these!

Question 11

PD

What does it indicate, and how do we find it?

Answer 11

Pupillary Distance- mm’s between pupils >> Use the pupillometer

Question 12

Plano

What does it mean?

Answer 12

No correction

Question 13

What does it mean if Sphere is “PL”?

Answer 13

No correction

Question 14

What does it mean if Sphere is “DS”?

Answer 14

No correction

Question 15

Which type of prescriptions do we not accept?

Answer 15

No contacts, no PRISMs

Question 16

What are the prescription restrictions for sphere?

Answer 16

Must be between -10 and +6. We can’t do more than -10 or +6

Question 17

What are the prescription restrictions for cylinder?

Answer 17

Must be between -4 and +4 We can’t do more than +/-4

Question 18

Is this in range? What, if anything, should you communicate to the customer?

Answer 18

Yes!

You should discuss high index with them though

Question 19

Is this in range? What, if anything, should you communicate to the customer?

Answer 19

No :(

SPH OD is too high

Question 20

Is this in range? What, if anything, should you communicate to the customer?

Answer 20

Yes!

They need high index.

Question 21

Is this in range? What, if anything, should you communicate to the customer?

Answer 21

Yes!

You should talk to them about high index.

Question 22

Is this in range? What, if anything, should you communicate to the customer?

Answer 22

No :( OD Sphere is too high

Question 23

Is this in range? What, if anything, should you communicate to the customer?

Answer 23

No :( OD Cylinder is too high

Question 24

Does this Rx have Astigmatism?

Answer 24

Yes! CYL and Axis

Question 25

Does this Rx have Astigmatism?

Answer 25

Nope! No CYL or Axis

Question 26

Can we fill this?

Answer 26

Nope! It has a PRISM

Question 27

How can you identify a contact lens Rx?

Answer 27

By the added columns BC and DIA

Question 28

Describe a multifocal Rx

Answer 28