Not to be repetitive the cylinder is the value of the difference of the two Primary powers if you want to say it has power that is fine. If it has a...
You seem to have answered you own question? I'm not sure what else I can add. The cylinder power is the difference between the principal meridians, 5...
Kwill212
please give a more detailed explanation of your solution. The cylinder on a lens has no power it only represents the difference between the...
I would guess you are calculating the power at 180 and then using Prentices rule for prism. That does not yield the correct answer except if the axis...
This has been puzzling me for a number of years, I'm sure someone smarter than me knows the answer. If I have a lens with the RX +5.00-5.00 x 45 and...
I like utilizing Zeiss stock lens program, and they ship overnight so you dont need to keep a large inventory of different lens materials/coatings. ...