Archive for November, 2013

Abbe Value High Index Lenses

  • Kieran Hunt
  • November 22, 2013

Wondering what the aberration is going to be like in your 1.67 high index lenses? High Index Lenses and Abbe Value The Abbe value on a lens affects its clarity, and if you’re interested in getting a pair of glasses with high index lenses, Abbe value and clarity are things worth considering. The reason is […]

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Can I Get Transition Lenses in High Index Lenses?

  • Tony Albarella
  • November 19, 2013

They are two technologies that have revolutionized modern eyewear, and often lead the list of desirable options when selecting a pair of prescription eyeglasses: transition lenses and high index lenses. So can they be combined? The short answer is yes, with limitations. Let’s start by defining the two technologies. High Index Lenses with Transition Lenses? […]

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What’s the Difference between Regular and High Index Lenses?

  • Tony Albarella
  • November 15, 2013

Basically, there are three distinct areas of difference between standard and high index lenses: Thickness Weight Price High index lenses are made of a material that is capable of bending light to a stronger degree than indexes with a lower rating. Because of this, they require less physical material to produce a prescription. Therefore, high […]

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Aspheric Lenses Versus Spherical

  • Tony Albarella
  • November 11, 2013

Traditional lenses – the kind that have been around for centuries – form a spherical shape. This means the curve they follow is the same across the length of their surface. The degree of curvature will vary with the lens material and prescription, but the curve itself is cupped and completely round. Spherical and Aspheric […]

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High Index Lenses with Anti-Fog Coating

  • Tony Albarella
  • November 8, 2013

After exploring your options, you may decide to select high index lenses for a number of reasons. Perhaps you have a strong prescription and want to reduce the distortion caused by standard lenses. Maybe the smaller profile of a high index lens will look much better in your desired frame style. Maybe your standard lenses […]

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What is the Highest Index Lens Available?

  • Tony Albarella
  • November 6, 2013

Anything over a 1.60 index can generally be described as “high index.” Lenses at 1.74 and beyond fall into the category of ultra high lenses. Those who have extremely high prescriptions (plus or minus 6.00 D or more) experience the greatest benefits from the reduced weight and thickness of high or ultra high index lenses. […]

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High Index Transition Lenses Availability

  • Tony Albarella
  • November 1, 2013

Transition lenses and high index lenses are two of the better technologies of modern eyewear. Transition (or photochromic) lenses automatically darken when exposed to the ultraviolet light of the sun and revert back to clear at night or indoors. This ability virtually eliminates the bother and expense of purchasing and switching between two separate pairs […]

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