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Ada Vision Center Downtown 1926 W. State Street, Boise, ID 83702

Ada Vision Center East 230 W Mallard Drive, Suite A Boise, ID 83706

Home » Eyeglasses & Contacts » Eyeglasses » Prescription Eyeglasses » What are Photochromic Lenses (Transition Lenses)?

What are Photochromic Lenses (Transition 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!

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Per CDC recommendation, Ada Vision Center will be open for emergency services only from Monday, March 30th through Friday, April 10th. Our modified hours will be from 10 am to 2 pm Monday through Friday (208) 336-2020. Ada Vision Center East is closed for the week. If you have an eyewear order to pick up, it has been sent to Ada Vision Center for pick-up there. If this is an after-hours emergency, please call (208) 631-1868.