Eye Protection for Red Light Therapy: What to Wear

Yes, cover your eyes during red light therapy whenever your device’s instructions call for it, and use purpose-made goggles rather than sunglasses. The American Academy of Dermatology (AAD) advises wearing the recommended eye protection and not swapping in sunglasses. Below, you’ll find how to tell when protection matters most, what to look for in goggles, and how to set up a session so your eyes stay comfortable and safe.

TL;DR

• Follow your device manual: if it says to wear eye protection, wear it every session.
• Sunglasses and ordinary eye masks are not a substitute for goggles made for the light your device emits.
• Risk rises with brightness, closeness and session length, so keep your distance and keep sessions to the time the manual lists.
• Check that the goggles’ stated blocking range covers your device’s wavelengths.
• If you have an eye condition, take light-sensitizing medication, or want to use light near a child’s eyes, ask an eye-care professional first.

Table of Contents

• Why your eyes need different care than your skin
• Do you really need to cover your eyes?
• Why sunglasses and sleep masks fall short
• What good red light therapy goggles should do
• What the research says about real risk
• How to set up a safer session
• When to ask a professional first
• Choosing a device you’ll use with confidence
• FAQ
• Sources

Why your eyes need different care than your skin

Most people start red light therapy for hands, joints, feet or skin. Those tissues are built to take in light at the surface. Your eyes work differently: the cornea and lens focus light onto the retina, the thin tissue at the back of the eye that you can’t replace.

According to EyeWiki, the American Academy of Ophthalmology’s clinical resource, wavelengths from roughly 400 to 1400 nm can, under hazardous exposure conditions, reach the retina and be focused there. Most home red and near-infrared devices sit inside that range. That’s why the eye guidance isn’t about fear. It’s about respecting where the light lands.

The FDA’s draft guidance on photobiomodulation devices makes the same point in regulatory language: these devices may deliver energy and irradiance above the maximum permissible exposure for the eyes, which carries a risk of ocular tissue damage. “May” is the key word. Risk depends on the device and how you use it, and that’s what you control.

Do you really need to cover your eyes?

The short, safe answer is yes. The longer answer is that how much it matters depends on three things you can see on your device’s label and in your routine.

Brightness (irradiance)

A bright panel delivers more light per square centimeter than a small handheld pad. The stronger the output, the more it matters that no direct beam reaches your eyes. Your manual should list output or give a safe-use distance.

Distance and angle

Looking straight at a bright LED array from a few inches away is the situation to avoid. Indirect exposure from farther away is generally lower risk, as one manufacturer safety guide puts it, but treat that as a general principle and follow your own device’s distance instructions.

Time

Exposure adds up. Dermatologist Dr. Michele Green told SELF that LED masks are generally safe when used exactly as directed, while excessive time or frequency can lead to cumulative exposure and possible eye damage. The fix is simple: stick to the session length in your manual rather than adding minutes because you feel good.

A quick decision guide

Why sunglasses and sleep masks fall short

It’s tempting to grab what’s in the drawer. The AAD is direct on this: don’t substitute sunglasses for the protective goggles recommended in the device instructions.

The reason is practical. Sunglasses are designed for sunlight, with a focus on visible brightness and ultraviolet light. They aren’t rated against the specific red and near-infrared bands a therapy device emits. A sleep mask may block what you see, but it may leave gaps at the edges, and closed eyelids don’t block all of the light that reaches your eyes. Goggles made for the job are tested and labeled for the wavelengths you’re using. Sunglasses and masks usually aren’t.

What good red light therapy goggles should do

This is the question behind most searches for goggles. Here’s a checklist you can use before you buy.

1. Match the wavelengths. Look at your device’s manual or product page for its wavelengths, such as red and near-infrared bands. Then check that the goggles state a blocking range that covers them. If a pair lists only visible light or UV, it’s not designed for this.
2. Look for a stated protection level. Reputable eyewear lists what it attenuates and by how much, often as an optical density rating or a percentage of light blocked. If there’s no number, you can’t compare.
3. Choose coverage over style. Wraparound or close-fitting frames limit light slipping in from the sides and top. If you wear prescription glasses, look for a pair designed to fit over them.
4. Check comfort. If goggles pinch or slide, you’ll skip them. Adjustable straps help for sessions of 10 to 20 minutes.
5. Inspect them often. Scratches, cracks or warped lenses mean it’s time to replace them.
6. Use the manufacturer’s recommendation first. Your device maker knows its output. If the manual specifies goggles, start there.

The international standard behind light-source safety gives context for why labels matter. IEC 62471 defines exposure limits and a classification scheme for LED and other incoherent broadband light sources across 200 to 3000 nm. For medical light equipment, IEC 60601-2-57 specifies that manufacturers must provide warnings, labels and procedures to prevent optical radiation hazards. In plain terms: the safety information that comes with your device is the product of that thinking. Read it.

What the research says about real risk

Here’s the honest picture, without alarm.

Red light therapy generally appears safe in the short term when used as directed. The AAD notes that possible side effects are usually mild, such as temporary pain or irritated skin, and that long-term effects are unknown.

The eye-specific concerns come from higher-powered or misused products:

• A 2024 analysis in PMC found that some low-level red light devices made for myopia in children approached or exceeded maximum permissible exposure limits for retinal photochemical and thermal damage after three minutes of continuous viewing. That’s a different use from body-area wellness devices, but it shows why direct viewing of light sources matters.
• The same report explains that thermal injury can occur if retinal temperature rises by more than 10°C, and that photochemical damage can sometimes be reparable.
• The American Academy of Ophthalmology warned in 2024 that red light instruments sold in the United States are largely unregulated and could cause retinal damage and vision loss if not used safely.

Pediatric ophthalmologist Dr. Laura Enyedi, quoted in that AAO piece, recommends professional consultation over home devices for concerns like myopia or changing vision, because many consumer devices have unknown safety profiles. If your question involves a child’s eyes, that’s the right route.

There’s also a useful point about regulation. The FDA’s 2023 draft guidance on these devices applies to specified Class II medical devices, and some low-risk general wellness products may fall outside its scope. Our guide to what FDA-cleared means before you buy walks through how to read those claims.

Laser classes add another layer. According to ANSI, Class 1 lasers are considered incapable of producing damaging radiation, while Class 4 lasers are the most hazardous when a direct beam reaches the eye or skin. If a product is laser-based, the class on its label tells you how seriously to take eye protection.

How to set up a safer session

Goggles are one layer. Good habits are the others.

1. Read the manual first. Note the recommended distance, session length and weekly frequency.
2. Position the light away from your face whenever you’re treating other body areas.
3. Put goggles on before you switch the device on, and take them off only after it’s off.
4. Don’t stare at the LEDs, even when the device feels gentle. Red light can look dimmer than it is.
5. Keep to the time listed. More isn’t better. For help with timing, see our dosing guide with J/cm² targets.
6. Stop and rest your eyes if you notice discomfort, spots, afterimages that linger, or changes in vision, and see an eye doctor if they don’t clear.
7. Keep devices away from children unless an eye-care professional has advised otherwise.

When to ask a professional first

Put a call on your list before you begin if any of these apply:

• You have a diagnosed eye condition. An ophthalmologist or optometrist who knows your history can tell you whether light near your eyes is a concern.
• You take medication that makes skin or eyes more sensitive to light. The AAD says such medication may make red light therapy inadvisable.
• You have a light-sensitive condition such as lupus. The AAD notes it may worsen, and advises seeing a board-certified dermatologist before use.
• The user is a child. Talk to a pediatric eye specialist.

We’ve put together a separate piece on which clinician to ask about red light therapy contraindications, and a broader look at what the evidence shows on safety.

Our perspective

We design Lunix products for people in their 40s, 50s and 60s who want to feel better in their hands, joints and feet without turning their routine upside down. For us, a good wellness device is one you feel confident using, and that starts with clear instructions about your eyes.

Our view is simple. Eye protection is part of the routine, not an obstacle to it. When you build the habit of turning the light away from your face, putting on the right eyewear if your manual calls for it, and keeping to the listed session time, you protect the thing that matters most: your ability to keep using the device for years.

That’s why we write our guides the way we do, with plain explanations of distance, time and what to ask a clinician. We’d rather you feel informed than rushed. Our red light products are designed for targeted areas like hands, joints and feet, and we encourage every customer to read the product instructions before the first session.

Lunix

Choosing a device you’ll use with confidence

If you’re shopping for a red light device for your hands, joints or feet, look at the safety information as closely as the features. Check what the instructions say about eye protection, session length and who should consult a doctor first.

Our Red Light Therapy Collection is built for targeted areas of the body, and each product comes with instructions to guide your sessions. Browse it, read the manuals, and pick the one that suits your routine.

If you’re comparing the cost of in-clinic sessions with owning a device, our red light therapy cost breakdown can help you plan.

FAQ

Should I cover my eyes during red light therapy?

Yes, if your device instructions call for eye protection, and it’s wise whenever the light is near your face. The AAD advises wearing the recommended protection. Even when the light is aimed at your hand or foot, avoid looking at the LEDs while they’re on.

Can I use sunglasses instead of red light therapy goggles?

No. The AAD says not to substitute sunglasses for the goggles recommended in your device instructions. Sunglasses aren’t designed or labeled for the red and near-infrared wavelengths a therapy device emits.

What should goggles for red light therapy block?

They should state a blocking range that covers your device’s wavelengths, ideally with a protection rating you can compare. Find the wavelengths in your manual, then match them to the goggle specifications. Choose a close fit that limits light leaking in around the edges.

Can red light therapy damage your eyes?

It can if used improperly. Bright light viewed directly, at close range, or for too long can harm the retina, according to the FDA’s draft guidance and ophthalmology sources. Following your device’s distance and time limits, and wearing the recommended protection, keeps risk low.

Is red light therapy safe for children’s eyes?

The American Academy of Ophthalmology cautions that many consumer red light devices are unregulated and have unknown safety profiles. If you’re concerned about a child’s vision, see a pediatric eye specialist rather than trying a home device.

Sources

• Is red light therapy right for your skin? (American Academy of Dermatology)
• Can Red Light Therapy Slow Nearsightedness in Children? (American Academy of Ophthalmology)
• Photobiomodulation in Retina Diseases (EyeWiki)
• Photobiomodulation (PBM) Devices: Premarket Notification 510(k) Submissions (FDA guidance)
• FDA draft guidance document on PBM devices (PDF)
• Red Light Instruments for Myopia Exceed Safety Limits (PMC)
• IEC 62471 photobiological safety standard (ANSI Webstore)
• IEC 60601-2-57 medical light equipment (ANSI Blog)
• Laser Safety classes (ANSI Blog)
• Are LED Light Masks Bad for Your Eyes? (SELF)
• Red Light Therapy Safety: Eye Protection, Dosing, and Side Effects

Recommended

• Which Clinician to Ask About Red Light Therapy Contraindications
• Calculate Red Light Therapy Dosing: Exact J/cm² Targets and Times
• Is Red Light Therapy Safe? What the Evidence Actually Shows