How to Buy Photochromic Sunglasses

Photochromic sunglasses feature lenses that are able to automatically adjust to changing conditions. Indoors the lenses are clear and when exposed to ultraviolet light outdoors the tint adjusts. Photochromic lenses are convenient and eliminate the need to switch between sunglasses and regular glasses.

Instructions

Difficulty: Easy

1. Choose a lens type. Photochromic glasses are available in several different materials. The type of lens used and the manufacture influences the sunglasses ability to adjust.
2. Pick a lens that can protect your eyes. Photochromic sunglasses offer different levels of protection. Choose glasses that are able to block all ultraviolet rays and offer maximum protection from sun glare.
3. Check the lenses ability to automatically adjust. High quality photochromic sunglasses should be fast to activate when outside and fast to fade back to clear with little adjustment time needed.
4. Look into approved photochromic lenses. The American Optometry Association (AOA) and similar associations provide list of photochromic sunglasses that met their standards.
5. Test out different tints. Colored lenses are a popular alternative to clear lenses. Different tints can reduce contrast and allow the wearer to see more clearly.
6. Remember to compare additional features added to basic glasses. Options for improved safety, impact resistance and more fashionable styles are available. Carefully review sports and other outdoor activities before making a final decision.

Tips & Warnings

• Consider combing photochromic sunglasses with polarized lenses to block reflected glare and improve vision.
• Hot weather affects the functioning of plastic photochromic sunglasses.
• Do not wear regular photochromic sunglasses while driving. The windshield blocks the ultraviolet light.