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A comment on Easing Eye Strain with the Right Lenses (2012). Parent comment

Re:Easing Eye Strain with the Right Lenses (2012) by walterbell on Saturday September 30, 2017 @02:59PM (#15374454)
Professional opticians (watch out for jargon) are at Optiboard, e.g. here’s a good post on single vision lens manufscturing:

http://www.optiboard.com/forums/showthread.php/49935-Free-fo...

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Re:Easing Eye Strain with the Right Lenses (2012) by CalChris on Saturday September 30, 2017 @03:51PM (#15374707)
It's a good resource but professional grade.

I first got into this when I was taking Physics 7C which has a chapter on lenses. There's an approximation they use and I thought couldn't they use ray tracing and do a better job? So I started reading and yeah, they could and they do. What I was wondering about is what free form lenses actually are. And with modern CNC capabilities, you can do a much better job.

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