1.56 Mid-index Polarized RX ( Gray / Brown )
 
These lean and mean vision-correcting machines are thinner than a 1.5-index lens and can handle higher prescriptions as well. They're also called refractive-index lenses, and are recommended for SPH corrections between +/-5.00 and +/-4.00, and CYL corrections of +/-3.00 and below.
 
How Do Polarized Lenses Work?
Light travels in waves, and the waves of normal light travel in several different directions. Combined, they create the visible light we see, whether it comes from the sun, a lamp, or a candle. But when light is reflected off of a flat surface or a body of water, it travels in only a single direction. This gives the reflected light an uncomfortable intensity that we call glare.
Normal sunglasses work by limiting the amount of light coming from all directions, dimming it so that you find it easier to look around without squinting. Polarized lenses go a step further, taking advantage of the fact that most reflected light travels in only one direction. Using a special chemical process that creates a special coating on the surface of the lens, these glasses filter out all light coming from that direction, virtually eliminating glare.
 
** Prescription Required **
During checkout :
1. Click add note to seller
2. Write your prescription
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