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Sirs
Mr darryl meister said :
Using well-centered frames. In general, the optical centers of single vision lenses are positioned along the vertical mid-line (also called the datum or 180° line)...

Sirs
Over 7 years of experience in ophthalmic optics field, I have encountered some enlightenments that can add great value to the same lens both you and your nearby rival sale.
Lets all ,...

Sirs
Over 7 years of experience in ophthalmic optics field, I have encountered some enlightenments that can add great value to the same lens both you and your nearby rival sale.
Lets all ,...

Sirs
Over 7 years of experience in ophthalmic optics field, I have encountered some enlightenments that can add great value to the same lens both you and your nearby rival sale.
Lets all ,...

sirs
mr daryl meister, that innovative brain, mentioned in one of his studies about the benefits of free-form progressives the following statement :
"Lens aberrations can also cause the ...

sirs
i am wondering here about the high-order aberrations that are found in most standard lenses (old fashioned-manufactured ones) .
i am not talking about these aberrations in the human eye it...

really , i am grateful for your gentleness .
just one last thing before you reply , please be aware that i am indicating to the aberrations of the ophthalmic lenses , not the aberrations of the eye...

sirs
i live and work in one of so called developing countries . in my country , the traditional lenses that are imported from old Chinese factories , are still available and sold . rarely you can...

sirs
i live and work in one of so called developing countries . in my country , the traditional lenses that are imported from old Chinese factories , are still available and sold . rarely you can...

dear colleagues
i am a beginner in the field of optics , and am wondering about the pantoscopic tilt . should i make the compensation (1 mm down-decentration for every 1 degree of tilt) for all...