Your prescription may include a SPH, CYL, Axis and ADD:
|OD||Right eye parameters|
|OS||Left eye parameters|
|SPH||Sphere indicates the amount of lens power prescribed for nearsightedness or farsightedness|
|CYL & AXIS||A Cylinder (CYL) and Axis is required to correct Astigmatism. Both parameters will be her|
|ADD||This provides magnifying power for reading, progressive and bifocal lenses|
In addition to the general parameters, a contact lens prescription will include a Base Curve (B.C.) and a Diameter (DIA).
If you have any question about contact lens prescription contact us at firstname.lastname@example.org.