Pls tell me how to calculate total amount of myopia.
i use spect and my lens power is
left eye(-2.5D)right eye(-2.5 D)
what is my total amount of myopia..?is it -2.5D or 5.0D?
i have to appear in a medical test for a job..and requirement is"total amount of myopia should not be more than -4.0D(including cylinder)
pls help
>>> How to calculate total amount of myopia? pls help?