Red light therapy and your eyes: do you need goggles?

Step out into bright midday sun and you squint before you've even thought about it. Your pupils shrink, you look away, maybe you blink. That reflex is one of your eyes' built-in protections, and it's the reason red light therapy eye safety is worth a few minutes of your time before you switch on a mask or panel. Red and near-infrared devices are bright, they sit close to your face or point straight at you, and one of their wavelengths is barely visible at all. This post covers what's known about red, near-infrared and blue light and the eyes, why a panel on a stand is different from a mask on your face, and the simple habits that make sense whichever device you use.

Red light therapy eye safety: why does bright light need care?

Because your eye focuses incoming light onto the retina, the light-sensing layer at the back of the eye, and too much light can damage it. The international guidelines on light exposure from ICNIRP describe the eye's natural aversion response to bright light (pupil constriction, squinting, looking away and sometimes blinking) and note that this response reduces how much bright light reaches the retina. When you choose to sit in front of a light for ten or twenty minutes, you're overriding that reflex, so it makes sense to protect your eyes deliberately instead.

How bright a source is, how close it is and how long you look at it all change how much light reaches the retina. Australia's radiation safety agency, ARPANSA, publishes an ICNIRP statement on LEDs that lists viewing distance and duration among the factors that affect any hazard, and notes some evidence that children and older people may be more sensitive (ARPANSA's own commentary adds that more research is needed on this).

Red, near-infrared and blue light: what's known about the eyes

Different wavelengths interact with the eye in different ways. In plain terms:

• Blue light (around 415nm). The ICNIRP guidelines describe a "blue-light hazard" to the retina that sits mainly between 380 and 550nm and peaks at about 440nm. Some face masks, including ours, have a blue mode at 415nm, which falls within that range. Be most careful with blue modes: eyes closed, every time.
• Red light (around 630–660nm). Red is visible and bright, so it does trigger your squint. That doesn't mean it's fine to stare at. A 2024 study measured two low-level red laser devices designed to be looked into for myopia control in children, and found that three minutes of continuous viewing approached or exceeded the maximum permissible exposure for the retina. Those are lasers aimed directly into the eye, which is very different from LEDs pointed at your skin, but the lesson carries over: don't look into a bright red source for long.
• Near-infrared (around 830–850nm). This is largely invisible, so it doesn't make you squint on its own. The ICNIRP guidelines point out that when there's little visible light, the eye loses its usual aversion response. In devices that combine red and near-infrared, the glow you see is mostly the red. The near-infrared is there too, whether you notice it or not.

If you'd like a refresher on what those nanometre numbers mean, see red light vs near-infrared: what 660nm and 850nm actually mean.

Panel at a distance vs a mask on your face

The device you choose changes where your eyes sit in relation to the light.

Panels

A panel stands on a table or the floor and shines across a larger area from a distance. That makes eye protection easier to manage: you can turn your face away, close your eyes, angle the panel at your back or legs, or use any eye protection supplied with it. The catch is that a panel is a large, bright source, so walking in front of it, glancing at it while you adjust a setting, or letting someone else stand in its path all count as exposure. Sit at the distance given in the directions for use.

Masks

A face mask puts LEDs centimetres from your eyelids for the whole session. That's where following the manufacturer's eye instructions matters most. Keep your eyes closed for the entire session, and use whatever eye protection or eye openings the mask is designed with. If your mask has a blue mode, be particularly strict about this.

Do you need goggles for red light therapy?

It depends on the device and its directions for use, so good red light therapy eye safety starts there. If goggles or eye shields come with your device, wear them. If the instructions say to keep your eyes closed, do that. Either way, these general habits make sense:

• Never stare into the LEDs, even briefly to "check they're working". Look at the reflection on your skin instead.
• Close your eyes whenever a light is pointed at your face, and keep them closed until the session ends.
• Use blue modes with extra care, as above.
• Stick to the session length in the directions for use. Longer or brighter sessions aren't better, for your skin or your eyes. Our post on why more intensity isn't always better explains why.
• Keep devices away from children's eyes, and switch panels off when kids or pets are wandering around the room.
• Stop if anything feels wrong. Eye discomfort, ongoing glare, spots in your vision or blurriness after a session are reasons to stop and get your eyes checked.

Who should talk to an optometrist or GP first?

Check with an optometrist, your GP or your eye specialist before using a light device near your face if you:

• have an existing eye condition, especially one affecting the retina, or have had eye surgery
• take medication that can increase sensitivity to light
• notice your eyes are unusually sensitive to bright light
• are buying a device for a child or teenager

Some medicines can make your eyes and skin more sensitive to light. If you're not sure whether anything you take falls into that group, your pharmacist or GP can tell you.

You can book an optometrist directly, without a referral, as Victoria's Better Health Channel notes, and a standard eye examination includes screening for common eye conditions. If you have sudden changes in your vision, seek medical care promptly.

About our Face Mask and Panel

The Red Light Face Mask is wireless and hands-free, made from soft medical-grade silicone, and uses 630nm red, 830nm near-infrared and 415nm blue light across three modes: red plus near-infrared, blue, and red. The Red Light Face Mask is intended for the treatment of full-face wrinkles and mild to moderate acne vulgaris of the face. Follow the session length in the directions for use and the eye instructions every session.

The Red Light Panel is a 189W panel with 63 × 3W LEDs at 660nm red and 850nm near-infrared, on a fold-out stand, and covers a large area from a distance. The Red Light Panel is intended for the relief of pain symptoms on the surface of the body; temporary relief of minor muscle and joint pain, arthritis and muscle spasm; relief of stiffness; promotion of relaxation of muscle tissues; and temporary increase in local blood circulation. Point it at the area you're using it on, not at your eyes.

For more on choosing and using a mask, read do LED face masks work? If you have questions about either device, our FAQ is a good place to start.

The contents of this blog, such as text, content and graphics, are intended for educational purposes only. The content is not intended to substitute for professional medical advice, diagnosis or treatment. Always seek the advice of your healthcare provider. Consult your healthcare provider before use if you are pregnant, are sensitive to light, or are taking medications that may increase light sensitivity. The Red Light Panel is included on the Australian Register of Therapeutic Goods (ARTG 471109). The Red Light Face Mask is included on the Australian Register of Therapeutic Goods (ARTG 464865). Always read the label and follow the directions for use.