Do You Need Blue Light Glasses?


Last Updated on October 2, 2023 by Faye N

Worries about the effects of blue light emitted by digital devices have escalated amidst our screen-centric digital era. Enter blue light glasses – a tech-driven remedy aimed at lessening the repercussions of extended screen usage. But do these eyeglasses really work? Let’s uncover the realm of blue light and determine whether these specialized eyewear options are effective or merely fleeting trends.

Blue Light Conundrum

Blue light, a high-energy visible (HEV) light is part of the visible light spectrum. It’s emitted not only by digital screens like smartphones, computers, and tablets but also by natural sources such as the sun. The issue arises when we spend extended periods in front of screens leading to concerns about potential eye strain, disrupted sleep patterns, and long-term retinal damage due to excessive blue light exposure.

Staring at digital screens can be detrimental to your eyes due to several reasons:

  • Blue Light Emission: Digital screens emit blue light, which has shorter wavelengths and higher energy. Prolonged exposure to blue light can lead to digital eye strain, causing discomfort, fatigue, and dryness.
  • Digital Eye Strain: The visual demands of screens such as prolonged focusing and increased screen brightness can lead to digital eye strain. This condition includes symptoms like headaches, blurred vision, and difficulty focusing on objects at a distance.
  • Reduced Blinking: When staring at screens, people tend to blink less frequently, causing dry eyes. Blinking spreads tears across the surface of the eyes, keeping them moist and reducing the risk of irritation.
  • Increased Screen Time: With the proliferation of devices, many individuals spend significant hours looking at screens. Prolonged screen time can lead to worsening symptoms and potentially contribute to long-term eye health issues.
  • Disrupted Sleep Patterns: The blue light emitted by screens can suppress the production of melatonin, a hormone that regulates sleep. Exposure to screens before bedtime can disrupt sleep patterns and lead to sleep disturbances.
  • Near-Work Strain: Focusing on screens at close distances for extended periods can lead to near-work strain. This strain can affect the eye’s ability to focus on objects in the distance, potentially worsening nearsightedness.
  • Potential Retinal Damage: Some studies suggest that excessive blue light exposure, especially from screens held close to the eyes, could contribute to retinal damage over time, although more research is needed to establish a clear link.

To mitigate these effects, it’s advisable to follow the 20-20-20 rule (take a 20-second break every 20 minutes and focus on something 20 feet away), adjust screen settings to reduce blue light emission, and consider using specialized eyewear designed to filter out blue light. Practicing good screen hygiene and maintaining a balanced lifestyle that includes outdoor activities can help support overall eye health.

What Are Blue Light Glasses?

Blue light-blocking glasses are specialized eyewear designed to filter out or reduce the amount of blue light that reaches the eyes. These glasses typically have special coatings or lenses that selectively block a portion of blue light wavelengths, which are emitted by digital screens, electronic devices, and artificial lighting.

The primary purpose of blue light-blocking glasses is to alleviate potential discomfort and reduce the negative effects associated with prolonged exposure to blue light. These effects include digital eye strain, disrupted sleep patterns, and potential retinal damage due to excessive blue light exposure.

Blue light-blocking glasses come in various forms:

  1. Clear Lenses: Some glasses have clear lenses with coatings that filter out a specific range of blue light wavelengths while allowing other light to pass through. These lenses are often worn throughout the day, even when not using digital devices.
  1. Amber or Yellow-Tinted Lenses: These glasses have lenses with amber or yellow tints that block a broader spectrum of blue light. They are often recommended for evening use, especially when looking at screens before bedtime, to reduce the impact on sleep patterns.
  1. Computer Glasses: Specifically designed for screen use, these glasses typically have a subtle tint that targets blue light emitted by computers, tablets, and smartphones. They aim to reduce digital eye strain and discomfort.
  1. Clip-Ons and Fitovers: These options can be attached to existing prescription glasses, allowing individuals who already wear glasses to benefit from blue light filtering without needing a separate pair.

Separating Fact from Fiction

While the concept of blue light glasses holds promise, their effectiveness is a subject of debate among eye care professionals and researchers. Some studies suggest that blue light exposure from screens contributes to digital eye strain and interferes with sleep patterns, but the extent of these effects varies among individuals.

When it comes to blue light glasses, some experts argue that their impact might be limited. The effectiveness of these glasses depends on factors such as the quality of the lens coatings and the specific wavelengths they filter. The overall benefits may vary based on individual sensitivity to blue light and the duration of screen usage.

Do They Really Work?

The answer isn’t a straightforward “yes” or “no.” Blue light glasses may offer relief to individuals who experience discomfort from prolonged screen exposure. Some users report reduced eye strain and improved visual comfort when wearing these glasses. However, the results are not universal, and not everyone may experience the same level of benefit.

For individuals seeking an alternative solution, there are software applications 

and device settings that can reduce the amount of blue light emitted by screens. These options adjust the color temperature of the screen, creating a warmer and less blue-tinted display.

The Bottom Line

Blue light glasses occupy a space where scientific evidence and anecdotal experiences intersect. While they hold potential benefits, they are not a guaranteed solution for all screen-related discomforts. If you’re considering investing in a pair of blue light glasses, it’s essential to manage your expectations. Consulting with an eye care professional can help you make an informed decision based on your specific needs and concerns.

In the end, the power of blue light glasses lies in their ability to offer a level of comfort and relief to individuals who spend significant time in front of screens. As our understanding of blue light and its effects continues to evolve, so too will the technology behind these glasses. Whether they’re a revolutionary solution or a passing trend, the choice to don blue light glasses ultimately hinges on your personal preferences and the unique demands of your digital lifestyle.