Lens Index Thickness Chart

Lens Index Thickness Chart. The lens thickness you should get depends on your prescription and your lifestyle. The first step towards clearer vision is learning which lens index is right for you.

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Items needed to make the calculation. As you go through the chart you can see the abbe value dropping with an increase in. For minus lens the result is for edge thickness.

Figure 3 Depicts The Factors.

Items needed to make the calculation. Our chart explains lens indexes including 1,67 and 1.74 high index lenses. The reduced weight and thickness make it an ideal choice.

For Minus Stock Lens Use Ct = 1.10.

This calculator makes the necessary calculations to obtain the lens thickness of a prescription lens whatever the refractive index and lens diameter. As a guide, and based on a standard plastic frame, we would suggest selecting the index below. For minus lens the result is for edge thickness.

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High index glass has an especially low abbe number, meaning this material causes the worst color aberration. The lens thickness you should get depends on your prescription and your lifestyle. 6 rows the first step towards clearer vision is learning which lens index is right for you.

The First Step Towards Clearer Vision Is Learning Which Lens Index Is Right For You.

As you can see, 1.74 high index lenses score very high on the thinness scale, and are the thinnest plastic. Lenses with a refractive index of 1.6 are ideal for. These ultra thin lenses are 20% thinner than polycarbonate lenses and 30% thinner than the regular lenses.

This Is Because Higher Index Lenses Are More Dense Than Standard Ones.

Additional edge thickness for plus lenses (the thinnest point of the lens) and additional center thickness for minus lenses (also the thinnest point of the lens). Our chart explains lens indexes including 1,67 and 1.74 high index lenses. Shop all eyeglasses women’s eyeglasses men’s eyeglasses.