Products
FSV
FSV 1.56 Spherical Occublue Fortifa FSV 1.56 Aspheric Clear Armoraa FSV 1.56 Aspheric Occublue Armoraa FSV 1.56 Aspheric Photoswitch Armoraa FSV 1.60 Aspheric Clear Armoraa FSV 1.60 Aspheric Occublue Armoraa FSV 1.67 Aspheric Clear Armoraa FSV 1.67 Aspheric Occublue Armoraa
RX
Rx Single Vision
Conventional SVRX Digital SVRX
Progressive
VisPro EzFit-4K Specta-Fit Feature-Fit MySign
Bifocal
Round Segment D-Segment
Coatings Treatments Refractive Index About Us Vision Demos Contact Product Authentication

Refractive Index

  • The Refractive Index of a lens is the ratio of the speed of light in a vacuum divided by the speed of light in the lens material.
  • Different lens materials have a different refractive index which dictates how thick the lens would be, lower the index, thicker the lenses would be for a given power. However thinner lenses can be made specially in plus powers with providing additional parameters to the lab such as effective diameter and inter pupillary distance.

Made of CR39 material.
Suggested power Range : Low myopia from Plan to -3.00 D
: Low hyperopia from Plano to +2.00 D
Mid index plastic lens with an Spheric & Aspheric surface design.
Flat, thin and light lenses which provide excellent vision.
Suggested power Range : Low to medium myopia     -1.00 to -6.00 D
: Low to mid hyperopia from     +1.00 to +3.00 D
High index plastic lens with an Aspheric surface design.
Flat, thin and light lenses. Cosmetically attractive.
Suggested power Range : Low to medium myopia     -2.00 to -8.00 D
: Low to mid hyperopia from     +2.00 to +6.00 D
Extremely thin single vision lens.
Flat, thin and light lenses. Cosmetically attractive.
Suggested power range : Medium to high myopia from -4.00 D to -10.00 D
: Mid to high hyperopia from +4.00 D to +8.00 D
Extremely thin and very lightweight lenses. For all wearers with very high prescriptions and severe myopia. Recommended power Range
: Medium to high myopia from -6.00 to -10.00 D
: High hyperopia from    +6.00 to +10.00 D

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