Photochromic lenses
Photochromic lenses are clear indoors and darken outside, in the sun, so you do not have to switch between glasses and sunglasses as you go in and out. They react to the sun's UV light, and they clear again when you come back inside. You can have them in your prescription.
Flexi-Tint and Transitions
| Flexi-Tint | Transitions | |
|---|---|---|
| In a line | Torga's own photochromic lens, made in our lab | The familiar brand name |
| Good to know | Comes in the everyday lens materials and in Torga's lens designs, including the multifocals | For more colours, and for rimless screw-mount frames, where a Strong & Lite lens is needed |
We stock the latest Transitions generation as each one becomes available.
What to expect
- They take a little time to darken, and a little time to clear again.
- They go less dark in hot weather.
- They do not darken in the car, because the windscreen blocks the UV that makes them darken.
- An ordinary photochromic lens is not polarised, so it does not block glare. For that you need a polarised lens.
- Photochromic lenses also absorb UV in the lens material.
Lenses for the car: Drivewear
Drivewear is the exception. It is both polarised and photochromic, and it darkens behind a windscreen. It changes colour with the light, from olive in low light through copper to dark brown in bright sun, so you have the right darkness and contrast as driving conditions change. It is the lens for someone who wants one pair of sunglasses that works in the car. NuPolar Infinite Grey is another polarised lens that darkens, from light grey to dark grey.
Which lens is for you?
Photochromic lenses are convenient if you go in and out all day and do not want to change glasses. If you drive a lot, tell your optometrist, so that you can talk about the options for the car. Book an eye test and your optometrist will talk you through the lenses for your prescription.
Read more about sun tints, polarised lenses and prescription sunglasses.