What are Photochromic Lenses
Photochromic lenses (or light-adaptive lenses) are innovative eyeglass lenses that automatically adjust their tint based on UV light exposure. They darken outdoors in sunlight and clear up indoors, offering convenience and protection.
How Do Photochromic Lenses Work?
Science Behind It:
Embedded molecules(e.g., silver halide) react to UV rays, causing the lenses to darken. The process reverses when UV decreases.
Speed & Intensity:
Transition time varies(seconds to minutes) based on brand and environmental factors (temperature/UV strength).
Key Benefits
UV Protection
UV Protection - Blocks 100% UVA/UVB rays.
Seamless Adaptation
No need to switch between regular and sunglasses.
Reduced Eye Strain
Minimizes glare in bright conditions.Minimizes glare in bright conditions.
Versatility
Available in single-vision, progressive and blue light blocking options.
HOW TO ORDER
1. Choose the frame you like
2.Add your prescription
3.Select Photochromic Lenses
4. Checkout with code PH20
Recommended Frames for Photochromic Lenses
FAQ:
How long do photochromic lenses last?
Typically 2–3 years; effectiveness declines over time.
Can they replace sunglasses?
Yes, but for extreme glare, dedicated sunglasses may be better.
Are They Suitable for Driving?
Daytime: Excellent for reducing glare.
Night driving: Not recommended (they won't darken, but clear lenses work fine).).
Night driving: Not recommended (they won't darken, but clear lenses work fine).).
Are they available in prescriptions?
Availability depends on prescription and frame.
Why Are Mine Not Darkening Enough?
Photochromic lenses may not darken enough due to low UV exposure (like behind car windows), aging lenses, or extreme temperatures.