Depending on the equipment used by your provider, a lens prescription can come in either a plus (+) cylinder or minus (-) cylinder notation. Although the prescription form may vary, the optical properties of each lens remain the same. The optometric transposition calculator is a handy tool created to quickly transpose any prescription with ease. Simply input the correct lens formula and your prescription will automatically convert to the corresponding lens parameters. 

Suggestions to Make This Tool Better? 

Hey, if you have any ideas to make this calculator better, please let us know! We are all ears and are always looking for ways to help doctors and patients with their optical needs.