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High index
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1.74 is .07 better than 1.67.
But seriously, there will be a noticeable difference, especially if it's more of a rectangle-shaped lens.
If round, or a perfect oval, you may not notice it as much.
Higher index does sacrifice the optical quality, especially in the periphery, which some people can be sensitive too.
The key is an accurate monocular pd, and measured optical center.
But seriously, there will be a noticeable difference, especially if it's more of a rectangle-shaped lens.
If round, or a perfect oval, you may not notice it as much.
Higher index does sacrifice the optical quality, especially in the periphery, which some people can be sensitive too.
The key is an accurate monocular pd, and measured optical center.
Thank you. Oval shaped.
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With an oval frame, you'll notice that its thinner by comparing the edge, but only slightly.
IMO, choose 1.74 only if < $50-75 difference in price with an oval frame.
1.74 has about the same Abbe value: chromatic distortion in the peripheral lens.
(if you look way to the edge of lens, you'll see some distortion/color fringes, but worth the trade for thinning the lens)
Insist on having the Optical Center measured (you want the skinniest point of the lens exactly at the center of your pupil)
Thank you the 1.74 is much more expensive, and some places dont offer it at all.
It costs almost double for that
You guys were right. Sams club has 1.7 seiko for 200. The 1.6 is 180. I got the 1.7 with ar in it..Thanks!
Not sure what those words are or if they apply to the lenses I purchased. I will get the glasses after the 18th so I will post then
They are having difficulty making the lenses and had to reorder them, Seiko brand. What brand of 1.74 is aspheric and digital?
Thank you for your help
Thank you for your help
I got my glasses today. They are very nice, thinner than my 1.67. My eyes dont look as small, less distorted.
Thank you all!
Thank you all!
