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hi somone can help to give me way of solution my samples above?

thanks

Dear Sir

i'm a litel beet confuse

can you help and make for me the full calculation of this sample

r- sph + 1.50 - 0.75 x 165 add - 2.00
L= sph + 1.00 - 1.00 x 90 add 2.00

...

Dear

i'm a litel beet confuse

can you help and make for me the full calculation of this sample

r- sph + 1.50 - 0.75 x 165 add - 2.00
L= sph + 1.00 - 1.00 x 90 add 2.00

distance...

thanks

in the free form design they have one cyl rate -
is this a combination of sph calc and add calc
becouse once we calculate sph with pant and wrap we get result
and when we calculate the...

thank a lot

i asume that after calculate the add power we will get deffernt cyl and angel from the sph calculation

so we need to use Axis problem in oblique cross-cylinder calculation
or...

thanks
if i understand you corectly the new angel for the add will be the coopnsat angle or if will be the diviation betwwe then

for example mph 12
vertex fiting 12 and 12 mm eys that give 30...

thanks

Thanks for the replay

2 more question

1. are we calculate the vertex distance before this calculation.
2. what will be the calculation for the add

thanks

Avi

i am looking for the full process of calculation (formulas) for compensation of prescription taking in consideration

1- vertex distance
2- pantoscopic tilt
3- wrap tilt -

for example

r-...