Transitions photochromic lenses adapt to changing light so your eyewear can remain clear or lightly tinted indoors and darken in brighter outdoor conditions.
✓ Choose GEN S or XTRActive, subject to prescription and lens compatibility.
Designed to react quickly to outdoor light and become clearer indoors. Usually activates less behind UV-blocking windscreens.
Designed for stronger outdoor tinting and some activation behind many car windscreens. It may retain some tint indoors.
| Feature | Transitions GEN S | Transitions XTRActive |
|---|---|---|
| Primary benefit | Everyday indoor/outdoor adaptability | Stronger outdoor darkening |
| Behind many car windscreens | Limited activation in most cars | Can activate to a degree |
| Indoor appearance | Generally clearer indoors | May retain some residual tint |
| Current colour choices | Grey, brown, green | Grey, brown, green |
Select a frame, choose Transitions in Lens Studio and pick an available colour and technology. If you prefer permanent sun tint with stronger reflected-glare reduction, compare polarised prescription lenses.
Browse prescription glasses or choose reglazing to keep a pair you already own.
Choose your lens use and available upgrades in our 7-step Lens Studio.
Enter or upload your prescription as instructed during checkout.
Our UK optical team prepares your lenses and checks your glasses before dispatch.
Clear answers about this lens type and what to expect when ordering.
Photochromic molecules respond to light and UV conditions, changing lens tint depending on the technology and environment.
GEN S prioritises everyday indoor/outdoor response; XTRActive is intended for stronger outdoor darkness and can darken behind many windscreens.
GEN S generally has limited activation in a typical UV-blocking windscreen. XTRActive can darken behind many car windscreens, but results vary.
GEN S lenses are designed to return to a clearer indoor state. XTRActive may keep a slight residual indoor tint.
Our current Lens Studio offers grey, brown and green choices for GEN S and XTRActive, where compatible.
They may be convenient for everyday use, but dedicated polarised sunglasses may be preferable for strong reflected glare.
Transitions may be available with compatible prescription designs. Exact combinations depend on the ordering options and prescription.
Standard specialist-lens production can take up to 21 working days; Express priority production is typically 5–7 working days, excluding delivery.
