Let say, there is a prescription:
SPH: +6.25 D CYL: - 2.50 D
The lens will process in lab from Plastic (PLS), Single Vision (SV), Hi-Index (1.6)
QUERY:
Thanks in advance
- How to calculate (formula) of Blank Lens (Semi-Finish) Diopter to make the above powers?
- How to calculate (formula) for Tool Index?
- Base Curve - BC (formula)?
- Cylender Curve - CC (formula)?
Rizwan ul Haque
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