• Clamp Optometrists

What are Transitions?

This is a question we regularly get in our practice so we thought that we would answer some of the questions people ask about transitions.

82% of people tell us that glare affects their vision outdoors. 60% of people suffer from tired eyes as evening approaches. 100% of our customers will be affected by harmful UVA and UVB rays. 73% of our patients tell us their eyes are sensitive to light. If any of these statements rings a bell with you, then Transitions lenses might be the way to go.

Transitions are our recommended brand of photochromic lenses. These are lenses which rapidly darken when they are exposed to ultraviolet light. The greater the intensity of UV rays, the darker the lens becomes. However, when UV light is no longer present (indoors or at night time), the lenses fade back to their clear state.

This means that one pair of glasses can be both clear and act as sunglasses, making life easier for all.

There are now two different forms of Transitions, designed to fit your personal needs. You can get either the Transitions Signature lenses or the Transition XTRActive lenses.

What is the difference between the two?

The Transition Signature lenses are the original design, and these work when you are outside. However, due to the UV blocker (which blocks around 99% of UV light) in your car windscreen, they do not work when you are driving. The Transition XTRActive, however, have a specially-designed formula that responds to both UV light and short wavelength visible light, so they are able to darken behind the windscreen.

When they are not in UV light, Transitions lenses are completely clear and the Transition XTRActive has an unnoticeable slight tint.

Transitions can be combined with almost all prescriptions and visible needs and can be combined with anti-reflection coatings that will compliment the features of the transition lens.

With both the Transitions and the XTRactive you can have your choice of colour which come in grey, brown and graphite green. You can also fit the lenses to your visual preferences.

Transitions lenses adapt to your lifestyle. They adjust from clear indoors to dark outdoors and everything in between. No matter where you are, or what situation you’re in, Transitions lenses adapt to the perfect shade so that you see well. The lenses change effortlessly, but the technology behind them is anything but simple. A complex formula of photochromic molecules make light, dark and every shade in between possible.

When Transitions lenses are exposed to UV light, trillions of photochromic molecules in the lens begin to change structure. This reaction is what causes the lenses to darken.

Transitions lenses are designed to be worn all day long, outdoors and indoors. And you can get them on virtually every frame, style, size and prescription. They are also perfect for children.

Transitions don’t just make everything look great, they also reduce eye fatigue and strain, while blocking out 100% of UVA/UVB light.


Clamp Logo SMALL.png

Established over 100 years ago in the heart of the city of Cambridge.

  • Facebook - Grey Circle
  • Instagram - Grey Circle

Company Name: Clamp Optometrists Limited | Company Number: 05728668

Copyright © 2021 Clamp Optometrists, All Rights Reserved