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Do Photochromic Glasses Lenses Block Blue Light?

Do Photochromic Glasses Lenses Block Blue Light?

Sunglasses with photochromic lenses may darken in the sun and shield your eyes from UV rays. Since they can adapt to shifting lighting situations, people typically purchase them to make transitioning from indoors to outdoors simpler.

Furthermore, they eliminate the need for prescription sunglasses. For people who spend a lot of time staring at screens, photochromic glasses can also block out blue light from the sun and electronic devices.

So, although these glasses block blue light, that isn't their main selling point.

How do photochromic lenses block blue light?

Photochromic glasses include a chemical reactant that causes certain molecules and dyes to move and change when exposed to intense light. Even though the color is invisible to the unaided eye, the photochromic molecules' color-balancing property filters out blue light, particularly with a yellow filter. What this implies Even on cloudy days, when the sun isn't bright enough to cause the lenses to darken, photochromic lenses offer UV protection. Light-adaptive lenses filter blue light from your digital gadgets, indoors or outdoors, just as photochromic lenses screen you from the sun's rays, even on overcast days.

An Anti-Reflective Coating should be added.

The use of your photochromic lenses can be further enhanced by adding an anti-reflective coating. This coating eliminates reflections from sunshine and other bright sources and permits more light to flow through your lenses for added support in low-light situations, such as nighttime driving.

Vision effects of blue light

Screens on devices like phones and computers emit blue light, harming your eyes and possibly interfering with your sleep. We typically spend too much time in front of devices, even though a small amount of blue light can benefit sleep. Possible negative effects of exposure to blue light are listed below:

  • Cataracts: Cells induced by blue light may result in this disorder of the eyes.
  • Insomnia: You can have trouble falling asleep and might wake up later if exposed to blue light.
  • Macular degeneration: Blue light-induced retinal damage has been connected to macular degeneration.
  • Restless sleep: Even if you successfully fall asleep quickly, blue light can lessen the stimulating effects of sleep.
  • Digital eye strain: Constant exposure to blue light can wear down the muscles in your eyes.
  • Vision blur: When your eye muscles deteriorate from digital eye strain, your vision may become fuzzy.
  • Dry eyes: Insufficient blinking brought on by prolonged exposure to blue light can result in dry eyes.
  • Headaches:  can be brought on by trying to see when your eyes are weary, and your vision is unclear.

In addition to being practical, photochromic lenses are advantageous because they guard against dangerous overexposure to blue light.

Which photochromic glass styles are available?

There are several different types of photochromic lenses available nowadays. They come in a variety of styles to suit your requirements. Examples comprise:

  • Sports glasses. Using specific eyewear during athletic events is only safe in certain circumstances. These materials consist of trivex and polycarbonate. Both types of transition lenses are available. 
  • Coated lenses. The specific sorts of coating that people like to have on their lenses are unaffected by photochromic lenses. Anti-reflective coatings, for instance, can help with glare reduction and are useful for nighttime driving. When you transition from a chilly outdoor setting to a warm indoor environment, water-repellent coatings stop your lenses from misting over. 
  • Vibrant lenses. Only gray-tinted traditional photochromic lenses were offered. Normal sunglasses, however, can be found in a variety of hues. These days, you can purchase brown or green photochromic lenses. Your desired shade could not be offered since the selection is still smaller than conventional sunglasses.
  • Bifocal, multifocal, and high-index options. Certain lenses are made to address certain eye issues. Photochromic lenses are available for the most prevalent styles of vision-correcting eyewear. Bifocal versions can be helpful for those who struggle to see both up close and far away. For those who require powerful prescriptions, high-index choices are beneficial. 
Why choose photochromic lenses?

Photochromic lenses can change color depending on your surroundings, going from clear indoors to sunglasses when you go outside. These lenses are functional, adaptable, and convenient. Here are five justifications:

  1. They are practical: Having two pairs of glasses with you is necessary with photochromic glasses. They are practical since you don't have to carry about an extra pair of sunglasses because you need one set of glasses.
  2. Improved technologies: When you move indoors to outdoors, or vice versa, photochromic lenses can instantly switch from light to dark, thanks to modern technology. People favor these glasses because of their comfort and cutting-edge technology.
  3. They lessen eye fatigue: Less eye strain is experienced by those who wear photochromic lenses than those who do not. Photochromic lenses are a great option for computer users and gamers. After all, they are made to prevent blue light and dangerous UV rays, which can cause eye strain. So, utilize your photochromic glasses the next time you start playing. Anytime and anywhere you request, they will provide protection.
  4. Eye Protection Throughout the Day!: Photochromic glasses can protect your vision by completely obstructing the sun's damaging UV rays. Excessive UV exposure can result in various dangerous eye illnesses and diseases, including cataracts and corneal burns.
  5. Completely Modifiable Glasses: Photochromic lenses come in various dimensions, hues, and forms. Any frame can be used with these lenses. Depending on your desired changes, you can also apply anti-scratch and anti-glare coatings to the lenses to get the best-performing eyeglasses.

Conclusion 

Traditional photochromic glasses lenses (transition lenses), as of my most recent information update in September 2021, are generally created to darken when exposed to UV light and lighten when UV light is diminished or absent. They don't have any particular blue light-blocking qualities by nature.

But since my knowledge can be outdated, lens technology has likely advanced, and some producers have created photochromic lenses with additional blue light-blocking coatings or qualities. For the most recent and correct information about photochromic lenses and their ability to block blue light, I suggest checking with specific lens manufacturers or speaking with an eye care specialist. They can inform you of any particular characteristics the lenses might offer and assist you in selecting the ideal choice for your requirements. 

Casey Optical Too, LLC is dedicated to providing the community with top-notch optometry services. Our long-standing commitment to quality, coupled with a warm and inviting atmosphere, ensures that all your eye care needs are met with care and expertise. Don't miss the opportunity to experience the best in optometry—schedule an appointment with our esteemed optometrists in Albuquerque, New Mexico, today.

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