Photochromic vs Polyblue Lenses: Grey or Blue?

How photochromic lenses work

Photochromic lenses (often called transition lenses) react to sunlight. They are clear indoors, darken to grey within a few minutes outside, and clear again when you go back in. Clearing usually takes a little longer than darkening.

Most photochromic lenses darken less inside a car, because the windscreen blocks much of the light that makes them react. If you drive a lot in bright sun, you may still want separate sunglasses for driving.

How polyblue lenses are different

Polyblue lenses behave the same way, clear indoors and darker outside, but the tint is blue instead of grey. They are a style choice: same convenience, different colour.

Polyblue is not the same as blue cut. Blue cut lenses stay clear and filter some screen light; polyblue lenses change colour in sunlight.

Which should you choose?

• Photochromic (grey): a classic sunglasses look that goes with any outfit.
• Polyblue (blue): a coloured, fashion look outdoors.
• Need reading help too? Photochromic also comes in progressive lenses (Varilux Transitions).

Before you buy light-adaptive glasses

Very cheap "photochromic" glasses are sold widely online in Nigeria. Before you pay anywhere, ask to see the lenses darken in sunlight, and buy from a seller that tells you clearly what happens if they don’t.

At McDaves the lenses are fitted by our partner optician to your prescription and covered by our 30-day guarantee.

Lenses mentioned in this guide

• Photochromic Lenses (Grey)
• Polyblue Lenses
• Progressive (Multifocal) Lenses

Common questions

What is the price of photochromic glasses in Nigeria?

It depends on the frame, your prescription and the lens design. For lenses in your own frame, send your prescription on WhatsApp and we will quote before you pay.

Are transition lenses the same as photochromic lenses?

Yes. "Transitions" is a well-known brand of photochromic lens, and people often use the name for all light-adaptive lenses.

Can I get photochromic lenses in my old frame?

Yes. Courier your frame to us or drop it off in Lagos Island, and we fit photochromic or polyblue lenses to your prescription.