Red Light Therapy: Should You Keep Eyes Open or Closed?

You just put on your light therapy mask, pressed start, and now you are wondering: should my eyes be open or closed? Can the light actually damage my eyes?

Eye safety is one of the most common concerns for anyone starting red light therapy, especially with a device that sits directly on the face. The good news: the answer is straightforward and the science is reassuring.

Keep your eyes gently closed. Not because the light is dangerous, but because closed eyes make the session more comfortable and just as effective for the skin around your eyes. Red and near-infrared wavelengths pass through the thin skin of your eyelids without any loss of treatment benefit.

Why Closing Your Eyes During Red Light Therapy Is the Best Practice

Closing your eyes during a face-based light therapy session is recommended for comfort, not because of a safety risk. Red and near-infrared light from a well-designed device is not UV radiation. The wavelengths used in photobiomodulation (PBM) do not cause DNA damage or ionizing injury to tissue.

How Eyelid Skin Interacts with Red and NIR Light

Eyelid skin is less than 1mm thick. Red laser light at 665nm and near-infrared laser light at 850nm pass through this thin tissue easily. Closing your eyes does not block the treatment from reaching the periorbital area, where crow's feet and fine lines form. Collagen stimulation occurs in the dermis regardless of whether your eyes are open or shut.

Comfort and Relaxation

A 10-minute session with your eyes closed turns the treatment into a brief moment of rest. Open eyes are not harmful, but the visible brightness of certain wavelengths, especially blue at 460nm, can feel distracting.

Is Red Light Therapy Safe for Your Eyes?

Red light therapy using wavelengths between 600nm and 1100nm is generally considered safe for the eyes when the device is properly designed and used as directed.

Red and NIR Light vs. UV Light

Ultraviolet (UV) light is high-energy and short-wavelength. UV exposure causes DNA damage to skin and eye tissue, contributing to sunburn, premature aging, and cataracts. Red light therapy devices do not emit UV light.

Red (600-700nm) and near-infrared (800-1100nm) wavelengths are low-energy and non-ionizing. Rather than damaging cells, these wavelengths are absorbed by cytochrome c oxidase (CCO), a molecule inside the mitochondria. The result is enhanced cellular energy production in the form of adenosine triphosphate (ATP), supporting repair and regeneration. According to a comprehensive review in Frontiers in Ophthalmology, the target wavelength range for photobiomodulation falls within 600 to 1100nm, where light can penetrate tissue and reach cellular photoacceptors without causing thermal or UV-type damage.

What Research Shows About PBM and Eye Health

Current clinical research on photobiomodulation and the eyes points toward potential benefits, not harm. Emerging trials have investigated controlled doses of red and near-infrared light for age-related macular degeneration (AMD) and dry eye, with early results suggesting these wavelengths may support mitochondrial function in retinal cells when administered under professional supervision.

An important distinction: clinical eye treatments use purpose-built medical devices under an ophthalmologist's guidance. An at-home laser face mask is designed for skin treatment, not direct eye therapy. Still, the underlying science confirms that red and NIR wavelengths at therapeutic doses do not damage healthy eye tissue.

Step-by-Step: Safe Face Treatment Protocol

Following a consistent routine ensures you get the most from each session. The Erythros safety guide covers device-specific protocols in detail, but here is a general framework.

• Cleanse your face to remove makeup, sunscreen, and surface oils.
• Pat your face dry and settle into a comfortable position.
• Place the mask over your face and adjust for a snug, even fit.
• Close your eyes before starting the device.
• Relax for the full 10-minute treatment duration.

After the session, continue with your regular skincare routine. No special aftercare is needed.

Does Closing Your Eyes Reduce Treatment Effectiveness?

No. Closing your eyes has zero impact on treatment effectiveness for the skin around your eyes.

Light Penetration Through Eyelids

Eyelid tissue is among the thinnest skin on the body. Red laser light at 665nm penetrates 2 to 4mm into the dermis, and near-infrared laser light at 850nm reaches 5 to 6mm. Both wavelengths pass through closed eyelid skin and reach the collagen-producing fibroblast cells in the surrounding periorbital tissue. A deeper guide to red light therapy wavelengths explains how each wavelength targets specific tissue depths.

Collagen Stimulation Is a Dermal Process

Crow's feet and fine lines result from collagen breakdown in the dermis. Photobiomodulation stimulates fibroblast cells to produce collagen and elastin at the dermal level. Whether your eyes are open or closed, the laser energy reaches the dermis and triggers the same cellular response.

Who Should Take Extra Precautions

For most adults, red light therapy is safe for the eyes when used as directed. Certain groups should consult a healthcare professional before starting treatment:

• Anyone who has had recent eye surgery, including LASIK or cataract procedures
• Individuals with diagnosed retinal conditions
• People taking photosensitizing medications
• Anyone who experiences migraines triggered by bright light

If you fall into any of these categories, speak with your ophthalmologist before beginning a light therapy routine. For more on safe at-home use, consult the full beginner guide.

Do You Need Goggles with a Laser Face Mask?

A well-designed laser face mask that sits flush against the skin and uses focused VCSEL lasers does not require separate goggles. The narrow beam angle delivers energy into the skin, not outward. Goggles would block the periorbital treatment zone, preventing the device from treating crow's feet and under-eye fine lines. Goggles are more relevant for high-output LED panels. Always follow the specific manufacturer's instructions for your device.

Try the Erythros Laser Pro Mask Risk-Free

The Erythros Laser Pro Mask is an FDA-cleared, Class II medical device with 164 VCSEL lasers, four therapeutic wavelengths, and a flexible full-face design built for safe, comfortable daily use. Each 10-minute session delivers focused laser energy directly into the skin. Individual results may vary.

Frequently Asked Questions

Can red light therapy damage your eyes?

Red and near-infrared wavelengths used in photobiomodulation are non-ionizing and do not cause UV-type damage. When used as directed with a properly designed device, red light therapy is considered safe for the eye area. Always follow the manufacturer's safety instructions.

Should you keep your eyes open or closed during red light therapy?

Closing your eyes is recommended for face-based treatments. Closed eyes improve comfort and do not reduce treatment effectiveness. Red and near-infrared wavelengths pass through the thin skin of the eyelids.

Does red light therapy work on crow's feet with eyes closed?

Yes. Eyelid skin is less than 1mm thick. Red and near-infrared wavelengths penetrate through closed eyelids and reach the dermal layer, where collagen production occurs. Closing your eyes does not block the treatment.

Do you need goggles for a laser face mask?

A laser face mask with focused VCSEL technology and a flush-fit design typically does not require separate goggles. Goggles would block treatment to the periorbital area. Goggles are more relevant for high-output LED panels used at a distance.

Is red light therapy safe for people with sensitive eyes?

Most people tolerate red light therapy well. Individuals with light sensitivity, recent eye surgery, or photosensitizing medications should consult an ophthalmologist before starting. Closing your eyes during sessions minimizes any discomfort.

How long should a red light therapy session last on the face?

A standard face treatment lasts 10 minutes. Longer sessions do not necessarily produce better results. Consistency matters more than extending individual session times. Follow the guidelines specific to your device.