There are several ways to input your prescription. One is the use the drop-down menu. Many users find this confusing but here is how it is done.
Your prescription will be similar to the following example:
OD (Right Eye) -2.00
OS (Left Eye) -3.00 -1.25 @ 175
What does this mean? In the right eye (the OD), the person with this prescription would simply use the drop down menu for Power – Right Eye and click -2.00. If your prescription states -4.50, you would click that number. The sign is very important. If your prescription states +3.00, you must click +3.00.
Notice that there are no other numbers after -2.00 in the above example for the right eye. This means that there is no astigmatism (when the eye is shaped more like a football than a basketball) in the right eye. Thus you would ignore Astigmatism – Right Eye and Axis – Right Eye.
This is not the case with the Left Eye (OS) in the above example. The left eye in this customer has astigmatism. Thus this person would use the drop down menus to enter -3.00 for Power – Left Eye, -1.25 for Astigmatism – Left Eye and 175 for Axis – Left Eye.
Your prescription may have another area called “Add.” This is unlikely if you are less than 40 years old as this is for bifocals, trifocals or progressive lenses. If you don’t see “Add” on your prescription, then ignore the Add option. If you have an “Add” on your prescription, enter it.
If this is all very confusing to you, don’t worry. Just take a picture of your prescription and upload it. Or you could simply copy it into any text editor, and then paste it into the Paste Your Prescription Here. We’ll do the rest.