If it has been more than a year since your last comprehensive eye exam , make an appointment with a board-certified ophthalmologist. Click here to be connected with one of our vision experts. Polarized lenses were designed to reduce glare from sunlight that reflects off shiny or smooth surfaces like water, glass, chrome or asphalt VisionSource.
Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Erwin says. Though usually more expensive, these lenses are an optimal choice for those who drive often or spend a lot of time by the water. If you choose not to opt for polarized sunglasses, Dr. Erwin assures that any UV protective lens works fine.
Darker colors provide higher levels of polarization. Sunlight can be absorbed or reflected in several different directions. Sunlight that is bouncing off horizontal surfaces such as water, land, or the hood of a car is usually reflected back in a similar horizontal direction. This reflection produces an agitating source of glare that cannot only create visual discomfort but can also cause a potentially blinding glare. Polarized lenses contain a laminated filter that allows only vertically oriented light to pass through.
This blocks the horizontally oriented light so that glare is almost eliminated. The most common colors of polarized lenses are gray and brown. However, depending on the manufacturer, many other colors may be available. Green, yellow, or melanin color are also very popular colors. A high-quality pair of sunglasses will usually include polarized lenses. A polarized lens offers the following advantages over non-polarized lenses:.
By and large, polarization is the best choice for people concerned about debilitating sunlight and glare. However, there are some who cannot wear them. Whether the reason is psychological or neurological, there are those who say that the lenses make them feel dizzy or disoriented, while others insist that they create an artificial 3-D effect.
For this subset of individuals, it is possible that the photoreceptor cells at the back of their eyes pick up the vertical light signals differently than the rest of us. There are also occupations that require a worker to be able to read certain digital numbers on a liquid crystal display.
Polarized lens sometimes can interfere with the visibility of the numbers and should be avoided. They can be especially helpful on sunny days and for activities that take place on or near water, such as boating or fishing. Polarized sunglasses also can reduce glare on snow and so can be beneficial for winter sports.
An exception is skiing in areas where there might be patches of ice, as they will be harder to see with polarized lenses. Generally speaking, yes. However, it's important to note they can make it hard to read LCD displays, such as those on dashboards as well as ATM machines and cell phones.
Ideally, no. You want the road to be as well-lit as possible and polarized sunglasses can interfere with this. Even polarized lenses marketed for night driving can limit visibility.
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