What is the highest index lens available?
The Highest Available Index 1.90 is the highest index lens available. Since any high index lens at or above 1.80 are made of glass only, 1.90 lenses are, obviously, available only in glass and not in the plastic high index format.
What companies make high index lenses?
Various lens manufacturers including Seiko, Essilor, Zeiss, Hoya, Tokai and Nikon offer lenses with refractive indices ranging from 1.67 to 1.74.
How much do high index progressive lenses cost?
High-index lenses ($150 for single vision, $350 for progressives) are thinner and lighter than CR-39 or polycarbonate lenses, and they will work for even the strongest prescriptions. High-definition lenses ($310 for progressive HD lenses) offer sharper vision and better peripheral vision than standard technology.
Is there a big difference between 1.67 and 1.74 high-index lenses?
The difference between 1.67, which is considered regular index and 1.74 is quite small, and really, the only way you’ll notice the difference is if you have a prescription below a -6 or above a +4. However, if you are in need of a very strong prescription, it is absolutely worth the additional cost!
How much do high-index progressive lenses cost?
1.90 is the highest index lens available. Since any high index lens at or above 1.80 are made of glass only, 1.90 lenses are, obviously, available only in glass and not in the plastic high index format. The primary benefit of 1.90 is the thinness of the material, as 1.90 lenses are as thin as it gets.
How much do glass lenses cost?
These are the thinnest plastic lenses. These high index lenses cost between $165 for clear single vision and $295 for progressive, dark gray or brown tinted lenses with all the coatings. They do not come in Transitions. High Index Glass 1.80. These high index lenses cost between $185 for clear single vision and $245 for the same, with coatings.
How much do high index contact lenses cost?
These high index lenses cost between $165 for clear single vision and $295 for progressive, dark gray or brown tinted lenses with all the coatings. They do not come in Transitions.
What are the advantages and disadvantages of ultra high index lenses?
The primary benefit of 1.90 is the thinness of the material, as 1.90 lenses are as thin as it gets. The primary disadvantage is cost, as 1.90 ultra high index lenses are the more expensive than any other lens material currently available.