aferelle Polarized, UV Protection, Riding Glasses Wayfarer Sunglasses (Free Size)  (For Men & Women, Black)

Polarized sunglasses are designed specifically to reduce glare so that you can see clearly in situations where you might otherwise squint or be blinded by reflected light. Glare is caused when light hits a reflective horizontal surface, causing light beams to be scattered horizontally. This can overwhelm photoreceptors in the eyes, including rods that allow you to see in darker conditions and cones that allow you to see color. Glare can dramatically impair your vision, making colors harder to distinguish and even "whiting out" your vision entirely. Squinting is your body's natural response to this, designed to prevent damage to the rods and cones from excessive light exposure. Polarized lenses counteract glare by applying a special chemical to the lenses in a vertical pattern. The vertical orientation of the chemical application is what blocks the horizontal light. A high-quality pair of sunglasses will almost invariably have polarized lenses. What Are the Benefits of Intelliblock Polarized Sunglasses? They are simply designed to prevent glare, not only during the day but possibly at night as well. The polarization of lenses is beneficial in that it: Increases your visual comfort Sharpens the contrast between light and dark Allow you to see true colors Helps prevent eye strain and fatigue Polarized lenses are available in a variety of colors, ranging from very dark hues to very light hues.