Blue light filter lenses have gained significant attention in recent years, especially as our screen time has increased. With concerns about the effects of blue light exposure on eye health and sleep patterns, these lenses are becoming a popular choice for digital device users.
What is blue light and should I be concerned about it?
Blue light is part of the visible light spectrum, with shorter wavelengths and higher energy. It is emitted by natural sources like the sun and artificial ones such as LED lights and digital screens (phones, tablets, computers, and TVs). Excessive exposure to artificial blue light, especially during evening hours, may contribute to:
Digital eye strain: Symptoms include headaches, blurred vision, and dry or tired eyes.
Sleep disruption: Blue light can suppress melatonin production, making it harder to fall asleep.
Potential long-term risks: Emerging research explores the possible link between cumulative blue light exposure and retinal damage, but this is still under investigation.
How do blue light filter lenses work?
They are coated with a special filter that reduces the amount of high-energy blue light that reaches your eyes. These coatings selectively block harmful wavelengths while allowing beneficial light through, ensuring better visual comfort without distorting colors significantly.
What are the benefits of blue light filter lenses?
Reduced eye strain: They help alleviate digital eye fatigue, making long hours in front of screens more comfortable.
Improved sleep quality: By minimising blue light exposure, especially in the evening, they help maintain a healthy sleep cycle.
Enhanced visual comfort: They reduce glare and improve clarity, especially in low-light conditions.
Customisable for your needs: Many major lens manufacturers, such as Hoya 🔗, Essilor 🔗, Zeiss 🔗 and Rodenstock 🔗, offer blue light filter coatings that cater to various digital and lifestyle requirements.
Who should consider blue light filter lenses?
Anyone who spends prolonged periods using digital devices can benefit from the filter coating. This includes:
- Office workers
- Gamers
- Students
- People experiencing digital eye strain symptoms
- Nighttime screen users
Can I use blue light filter lenses for gaming or professional work?
Absolutely! They’re are designed to support digital lifestyles. They are particularly beneficial for gamers or professionals who spend extended hours in front of screens. Users often report feeling less fatigued and more focused.
Do they meet Australian standards?
Yes. In Australia, lens coatings and materials must adhere to stringent standards for optical quality and safety. When choosing blue light filter lenses, ensure you purchase them from a reputable optometrist or lens provider.
Do I need a prescription to use blue light filter lenses?
Not necessarily. The filter coating can be added to both prescription and non-prescription lenses. If you don’t need corrective lenses but want to reduce blue light exposure, you can opt for non-prescription glasses with this feature.
Are there any downsides to blue light filter lenses?
While the benefits are clear, some users may notice:
- A slight yellow tint, depending on the lens brand and coating.
- Limited impact on certain symptoms if underlying eye conditions are present. It’s always best to consult an optometrist to determine the root cause of eye discomfort.
Is blue light filter a scam?
The consensus in the scientific and medical community is they serve a practical purpose for specific concerns. However:
- They are not a panacea for all eye-related problems caused by digital device use.
- Overemphasis on blue light’s harmful effects, particularly in marketing, has led to some skepticism.
What is still debated?
Long-term retinal health
- There’s no conclusive evidence linking artificial blue light exposure from screens to significant retinal damage. Studies often focus on much higher intensity blue light exposure, such as that from the sun, rather than the levels emitted by screens.
- Claims that blue light filters “prevent retinal damage” are speculative and not firmly supported by current research.
Digital eye strain causes
While blue light might contribute to eye strain, it is just one factor among others like dry eyes, poor posture, and extended near work. Some experts believe blue light filters are overhyped for addressing symptoms that could be managed with behavioral changes
Where can I get blue light filter lenses in Australia?
Most Australian optometrists and optical retailers offer blue light filter coatings as an option. Major lens brands like Hoya’s BlueControl 🔗 and others provide reliable solutions. You can book an appointment with us for a tailored consultation.
What steps can I take besides using blue light filter lenses?
To further reduce the impact of blue light, consider:
- Following the 20-20-20 rule: Look away from the screen every 20 minutes, focusing on an object 20 feet away for 20 seconds.
- Adjusting screen settings: Enable night mode or blue light filters on your devices.
- Maintaining good posture and lighting while using screens.
