LIFE-SAVING BENEFITS OF POLARIZED LENSES

June 23, 2014
A pair of blue sunglasses on a white background.

The day is bright and sunny. Optimal conditions for driving, right? Wrong! Blinding glare from sun and vehicles is a contributing factor to fatal motor vehicle accidents. More than 90 percent of reactions made behind the wheel depend on good vision. A recent survey by Essilor revealed a disturbing fact – 20 percent of eyeglass wearers sometimes drive without their prescription glasses and instead wear non-prescription sunglasses. That means one in five make day-driving unnecessarily treacherous. Another Essilor study found that reaction times improved by one-third of a second for drivers who wear polarized prescription lenses. For a car traveling 80 km/h, one-third of a second allows a driver to stop seven metres sooner, or the length of an intersection. In glare-intense situations, polarized lenses improve vision clarity by 75 percent, compared to ordinary sun lenses.

How do they work? Sunlight itself is not polarized – it’s either absorbed or reflected. Sunlight bouncing off a horizontal surface will strike the driver’s eyes at a similar angle and produce strong glare. Working like a venetian blind, polarized lenses have a laminated surface with invisible vertical stripes that allow only vertically-oriented light to enter the eyes. Glare is eliminated because the horizontally-polarized light waves can’t bypass the polarized filter.

Come and see us for specific advice on sunglass lenses and frame styles. We can recommend the best options for you based upon your lifestyle, hobbies, and degree of UV exposure.

By Richard Wilk April 27, 2026
Discover evidence-based myopia control options, from specialized lenses to Ortho-K. Learn how Mountain View Optometry creates personalized plans to protect your child's long-term eye health.
Four astronauts in blue flight suits standing in front of a spacecraft display
By Tom Wilk April 27, 2026
Artemis II has flown around the Moon, and scientists are now turning a lot of attention to what we learned about vision and eye health on the trip. Here’s the quick takeaway.
Close-up of a person’s eye being gently pulled open by fingers, showing pink eyeshadow and a contact lens.
By Tom Wilk April 27, 2026
Many cases of dry eyes are more complex than they appear. A proper diagnosis is essential to ensure your treatment is prescribed appropriately to manage your specific condition and all related factors.
A close-up view of a human eye with a brown iris, defined eyelashes, and a well-groomed eyebrow.
By Tom Wilk March 21, 2026
Smooth, tighten, and refresh your eyelids without surgery. Discover how Jett Plasma treatment reduces wrinkles, lifts sagging skin, and restores a more youthful, confident look.
Man wearing enchroma sunglasses smiling
By Rosendo C March 18, 2026
Experience colour like never before. Book an EnChroma consultation in Calgary to test glasses designed for colour blindness and try them in real life before you buy them.
Close-up of a person's eye and nose, wearing eyeglasses with horizontal lines distorting the view.
By Rosendo C March 17, 2026
Struggling with double vision or eye strain? Discover how prism glasses help align vision and improve everyday comfort.
Comparison of eyeglasses with and without coatings.
By Rosendo C March 11, 2026
Discover the top lens coatings that improve clarity, comfort, and durability. Learn which coatings are worth it for your glasses and lifestyle.
Woman with bob haircut and large blue and purple glasses, furrowing her brow and pursing her lips.
By Rosendo C February 11, 2026
Online glasses may look like a bargain, but poor fit and subpar lenses can lead to discomfort and blurry vision. Here's what to watch out for.
Surgeon holding an intraocular lens with forceps, next to its plastic case, in a sterile setting.
By Tom Wilk February 11, 2026
Explore your intraocular lens (IOL) options after cataract surgery. Learn the pros, cons, and benefits of each type to make the right choice for your vision.
Woman with long dark hair, holding her chin, looking thoughtful, indoors.
By Tom Wilk February 11, 2026
Think you don't need an eye exam if you have perfect vision? Learn why regular eye exams are essential for your overall health and long-term eye comfort.
Show More