A Brief Guide Regarding the Photochromic, Transition, Tint, and Polarized Eyeglass Lenses

In recent times, several types of eyeglass lenses are available to cater to the individualized visual needs. Let’s take a look at these eyeglass lenses and their specific qualities.

Photochromic Lenses; AKA Transitions

Photochromic lenses have a special quality of acting as a regular clear lens while indoors and darkening automatically upon sunlight exposure. These lenses are also referred to as ‘variable tint lenses’ or ‘light-adaptive lenses’. These Transitions lenses are produced with special molecules which are activated when exposed to the ultraviolet radiations of direct sunlight. Since UV radiations can also penetrate the clouds, these molecules will be activated on both the cloudy days and sunny days, thereby causing the photochromic lenses to darken.

Transitions are now available in all kinds of designs and lens materials including bifocals, high index lenses, progressive lenses, and premium progressive lenses. These lenses provide 100% protection from both the short wave and long wave UV radiations emitted from the sun.

Since excessive exposure to UV radiations and direct sunlight can lead to many ophthalmic diseases, such as glaucoma and cataracts, it’s highly advantageous to use Transitions for both adult’s eyewear as well as children’s eyewear. Also, if you have photochromic eyeglasses, they’ll reduce the requirement to carry around a pair of prescription sunglasseses everywhere you go.

Polarized Lenses

Polarized lenses have the quality of filtering out or blocking the reflective glare off the snow, water, and pavement. This type of lens is highly beneficial for driving, fishing, or any other activity which involves intensive glare. These lenses also provide the added benefit of protection against the ultraviolet radiations. Hence, if you require protection from both the UV rays and glare, polarized lenses should be your option of choice.


These are lenses which are bathed in special lens tints which can carry any density or color shade. The tint color basically gets absorbed into the material of the lens. Tint density is a percentage, where 0% represents complete clarity 100% means it's darkly tinted so no light can pass through the lens.

Usually, a 30% to 40% tint is feasible for fashion purposes and a 60% to 80% tint is selected for protection from the UV radiations emitted by the sun. These tinted sunglasses are a customized feature and can be tailored to a person’s specific requirements. The customer has the option of choosing the tint color and tint density. The most common lens colors are brown and grey. The color is usually chosen based on the color of the frame. It’s highly recommended to add the ultraviolet coating and polarization to your tint to ensure maximum protection.