Summit Bi Aspheric Single Vision
These thinnest lenses are individually crafted to your prescription, and are manufactured with Aspheric front and back surfaces to enhance the optical performance but also to flatten both the front and rear surface of the lens. This gives a thinner lens substance and when combined with the 1.76 index material gives the thinnest, lightest plastic lenses available in the world!
This thinnest lens can also be supplied with a Super Duper anti-reflective coating as standard. This is good for prescriptions above +/-6 where you wish to have the thinnest lenses and lightest lenses available, however the real benefit is for people with very high +/- prescriptions.
Summit Bespoke Plus Varifocal
As with all Bespoke Varifocals, Bespoke Plus is a rear surface individually designed varifocal. To enhance and further reduce both the thickness and weight, Bespoke Plus is a double aspheric design on the front and rear surfaces. Aspheric design helps us to flatten the curves whilst enhancing optical performance. When you combine the proven Bespoke varifocal design with the highest 1.76 thinnest lens material and double aspheric technology, you have the thinnest most advanced varifocals available. Good for prescriptions above +/-6 where you wish to have the thinnest lenses and lightest lenses available, however the real benefit is for people with very high +/- prescriptions.
Index Glass Thin Lens (Varifocal Only)
Only available in varifocal, for the highest +/- prescriptions. This is the thinnest material for a varifocal, however it is around two times heavier than both the 1.67 lens and the 1.74 lens index in plastic. Unless you have a minus prescription of between 15 and 20, it is always recommend that you have a 1.76 thinnest plastic lens instead due to the weight disadvantage.
Index Glass Thin Lens (Single Vision Only)
The thinnest lens material available for very high prescriptions. Should really only be used on the highest type of prescriptions, for example +10 or -17 sphere as the weight disadvantage makes it impractical on lower prescriptions where 1.74 thin lens or 1.76 thin lens plastic would be more suitable. This lens can only be applied with an anti-reflective coating as an additional extra.