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Across from the Delta Hotel on Erb St. in Waterloo, Ontario

Photochromic Lenses

Photochromic lens technology has been around for over 40 years. Photochromic lenses change from clear to dark based on the intensity of UV radiation. Remove the source of UV radiation from the lenses, and they return to their clear state.

The amount of photochromic reaction (how much a lens darkens) depends upon the intensity of the UV radiation present, combined to a lesser extent with the current temperature of the air. That means photochromics adjust automatically to indoor and outdoor light conditions. Photochromic lenses automatically adjust to outdoor lighting conditions by providing the right level of tint, and return automatically to their clear state; both indoors and at night.

Watch a short video on photochromic lenses:

Special thanks to the EyeGlass Guide, for informational material that aided in the creation of this website. Visit the EyeGlass Guide today!

Pierce Family Vision is following the directive from the Government of Ontario and is closing our office except for prearranged urgent appointments until further notice. If you have an ocular emergency, or need to order contact lenses or eye drops or need to reach us, please call our office at 519-886-4170. Learn about tele-optometry that we are offering for added support!