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About Lens Materials
Choosing the right lens material for your new eyeglass replacement lenses is important and determined by several factors
such as thickness, weight, durability, and comfort. The information provided will help you understand different lens material
options available and help you make the best choice possible.
Plastic CR39 lenses
Standard plastic lenses are 50% lighter and safer than glass lenses and most commomly used for everyday use.
Not recommended for Children, active adults, sports glasses or safety glasses
Recommended prescription range:
Sphere Power + or - 1.00 or below
Cylinder Power + or - 1.00 or below
Polycarbonate Lens Material
Polycarbonate material is lighter and thinner than plastic. Impact and scratch-resistant makes this material best for
Children, active adults and sports activities.
Up to 100% UV protection
Recommended prescription range:
Sphere Power +3.00 or -3.00 or below
Cylinder Power +2.00 or -2.00 or below
High Index Lens Material
High Index lens material is thinner, lighter and recommended for strong eyeglass prescriptions. High Index replacement
lenses can make your eyeglasses more attractive resulting in thinner, lighter looking eyeglasses. Nearsighted or high +
prescription lenses are thicker at the edge of the lens and thinner toward the center of the lens.
Farsightedness or High - prescription lenses are thinner on the edge and thicker toward the middle of the lens.
Choosing the right frame will determine how your eyeglasses will ultimately look and how thick your lenses will appear.
High +plus prescriptions should choose eyeglass frames that are larger and more round, High -minus prescriptions
should choose frames that are smaller.
Which Index should i choose?
High Index 1.60 is best for + or - 3.00 and over
Sphere power
Cylinder power
High Index 1,67 is best for + 4.00 or -6.00 and over
Sphere power
Cylinder power
High Index 1.74 is best for + or - 5.00 and over
Sphere power
Cylinder power
Trivex Lens Material
Lenses made of Trivex material are the safest and lightweight lenses available. Superior optical clarity, impact-resistant,
blocks 100% of UV rays and best choice for rimless eyeglasses.
Recommended prescription range:
Sphere power +or - 3.00
Cylinder power: +or - 2.00
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