Photochromic Lenses Explained
Photochromic lenses, also known as transition lenses offer you a unique and highly versatile advantage when compared to traditional glasses lenses. They adapt to the light levels they are exposed to, gradually transitioning from clear to tinted as environmental light increases.
This means your normal pair of everyday photochromic glasses can become a UV-resistant pair of sunglasses, just by stepping outside on a sunny day!
What are photochromic lenses?
Photochromic lenses are designed to automatically darken in response to UV light exposure and revert to a clear state indoors or in low UV light conditions.
These lenses provide a convenient solution for people who need prescription glasses but also want the benefits of sunglasses without having to switch between different pairs. They offer both UV protection and eye comfort by adjusting their tint level based on the intensity of sunlight, making them ideal for everyday use in varying lighting conditions.
How photochromic lenses work
These lenses use unique photochromic gas molecules. Each lens contains millions of these molecules which are transparent until they are exposed to UV light (when you step outside on a bright or sunny day).
This innovative chemistry changes the molecular structure of the lens as it absorbs increasing amounts of light.
The amount the lenses darken is completely dependent on the amount of UV light that is absorbed, this means that if you go outside on a dull day you will still be able to see clearly as the lenses will only darken a small amount. If you go outside on a very sunny day, a lot of UV light will be absorbed by the lenses, so they will transform into the equivalent of sunglasses – protecting your eyes just as normal sunglasses do.
Once you go back indoors or to a darker environment, the lenses will then automatically reduce their tint, and return back to normal clear glasses lenses.
Prescription photochromic glasses
Prescription photochromic lenses combine the visual correction of standard prescription lenses with the adaptive technology of photochromic lenses. Prescription photochromic lenses operate in the same way as standard photochromic lenses making them a practical choice for people who frequently move between indoors and outdoors and want a single pair of prescription glasses that adapt to suit what they are doing.
Photochromic lenses from Glasses2You
We offer a range of light-reacting lenses to suit your budget. Find out more about them below:
Photochromic Lenses
Great value basic photochromic lenses darken when exposed to UV or sunlight, providing both convenience and protection against glare in changing lighting environments.
Transitions Lenses
These lenses offer the clearest view with the fastest transitions, offering high levels of UV protection with a long life.
Photochromic Lenses FAQs
What are photochromic lenses?
These are lenses that automatically adjust to changing light conditions, aiding your vision in different environments. They offer UV protection and reduce glare by staying clear indoors and darkening when exposed to sunlight. Their adaptability makes them an ideal choice for people who frequently move between indoor and outdoor environments.
How do photochromic lenses work?
These lenses contain light-sensitive molecules that react to UV rays. When exposed to sunlight, the molecules change shape, darkening the lenses. The molecules revert to their original form indoors or in dim light, making the lenses clear again.
Do photochromic lenses provide UV protection?
Yes, these lenses block 100% of UVA and UVB rays, protecting your eyes from the harmful effects of prolonged sun exposure. Some lenses also filter blue light, offering additional protection from digital screens.
What are the benefits of photochromic lenses?
Key benefits include:
- Convenience of not needing separate sunglasses.
- Protection against harmful UV and blue light.
- Reduced eye strain in bright light.
- Improved contrast and comfort in different lighting conditions.
Who can benefit from photochromic lenses?
These lenses are ideal for people with active lifestyles who move between indoor and outdoor environments often, as well as those with light sensitivity or who want extra eye protection from UV and blue light.
Can photochromic lenses replace sunglasses?
In most cases, yes. They offer sufficient UV protection and glare reduction outdoors. However, for harsher conditions like skiing or direct sun exposure for prolonged periods, dedicated sunglasses might be more effective.
Are photochromic lenses worth the cost?
These lenses are a wise purchase for anybody seeking simplicity and all-day UV protection. They combine the functionality of glasses and sunglasses, saving you the hassle of carrying two pairs.
