Material: MR-8
Refractive Index: 1.61
UV Cut: 400nm
Power Range: -12/-2,-15,-10/-4
Coating Choice: SHMC
Surface Design: Spheric / Aspheric
What Are High Index 1.74 Lenses?
If You Have A Very Strong Prescription, You Should Consider Ultra Thin High Index 1.74 Lenses.
High Index 1.74 lenses are the thinnest, flattest, and most cosmetically appealing lens ever developed.
These ultra thin lenses are nearly 40% thinner than plastic and 10% thinner than 1.67 high index lenses, offering you the ultimate in technology and cosmetics. The thinner lens is much more flattering, reducing the distortion that high prescriptions cause when made with lower quality lenses.
What lens thickness should I choose?
If you’re moderately, or very short-sighted you’ll benefit from thinner lenses as the edge thickness of your lenses will be more visible.
Lenses with a refractive index of 1.6 are ideal for prescriptions where the value of your SPH prescription is between -2.50 and -4.00.
Between -4.00 and -6.00 we’d recommend a lens with a refractive index of 1.67, and any prescriptions over that a lens with a refractive index of 1.74 will be more suitable.
If your prescription is over -5.00 we’ll need an accurate measurement of the distance between your pupils, often referred to as the PD.
Because lenses for long and short-sightedness are different, there are different considerations for each.
Hi-index 1.74 lenses are perfect for
- Suitable for high power prescriptions in ranges +10.00 to -10.00
- Not recommended for semi-rimless or rimless glasses Exceptional scratch durability
- Exceptional optical Clarity
- 50% thickness reduction
- 30% weight reduction
- Suitable for large sized frames
Three Main Strengths of Blue Block Photochromic Lens
Blue Light Fliter
Just like our regular blue light lenses, our blue block photochromic lenses are also engrained with a blue light element in its raw material.
Rapid Transitioning
Our blue block photochromic lenses change from light to dark when exposed to daylight. Regular blue light lenses when you’re indoors, then straight to sun lenses when you step outside.
100% UV Protection
Our lenses come with UV-A and UV-B filters which block 100% of UV rays from the sun, so you can concentrate on important things.