FAQ

Lenses & Technology

·        What are photochromic lenses?

Lenses that stay clear indoors and automatically darken into sunglasses when exposed to sunlight (UV).

·        How do blue light glasses work?

They filter high-energy light from digital screens to reduce eye strain, fatigue, and headaches while improving sleep quality.

·        Can I wear them all day?

Yes. They are designed for all-day use—working, gaming, or relaxing—without distorting your vision.

·        Do photochromic lenses work inside a car?

Most car windshields block UV rays, so the lenses will remain clear or only lightly tint while you are driving.

·        Do I need separate pairs for screen time and sun protection?

No. Our hybrid lenses are built for both. They filter harmful blue light from screens while you are indoors and automatically transition into protective sunglasses the moment you step outside.

Are your Photochromic Blue Light glasses prescription?

No. EyeFend's Photochromic Blue Light lenses are non-prescription and designed for everyday eye protection and visual comfort.

 

Fit & Sizing

How do I find my size?

Check the measurements (e.g., 50-20-145) on the product page within the product details. You can compare these to the numbers printed on the inside arm of your current glasses.

Which shape suits me?

    • Round Face: Rectangular or square frames.
    • Square Face: Round or oval frames.
    • Oval Face: Most shapes, especially geometric or oversized.

 

Sunglasses

Do they offer UV protection?

Yes. All our sunglasses provide full UV400 protection, blocking 100% of harmful UVA and UVB rays.

Are the lenses polarized?

We offer both polarized and standard options. Please check the "Details" section on the specific product page.

What is the benefit of polarized lenses?

They eliminate glare from reflective surfaces like water, glass, and roads, providing sharper vision and better comfort for driving or outdoor activities.

Are polarized sunglasses good for driving?

Yes. They help minimize glare from roads and vehicles, making driving more comfortable.

What are the frames made of?

We use high-end materials including acetate and reinforced metals. This ensures your eyewear is lightweight for all-day comfort while remaining durable enough for daily use.