For individuals familiar with red light therapy, the intense red glow of the treatment is a beacon of a wide variety of wellness benefits. However, for those who are new to the treatment, this intense red light might signify some concerns. A frequently encountered inquiry would be “Is it safe for my eyes?”
Unlike UV light, which is known to damage skin and eyes, red and near-infrared (NIR) light are widely regarded as safe. However, the brightness and intensity of these wavelengths can make prolonged exposure feel uncomfortable, especially for the eyes. Some red light therapy manufacturers provide goggles, while others claim eye protection is unnecessary.
So, what’s the truth?
In this article, our experts at Rojo Light Therapy NZ will assess the physiological effects of red light therapy affecting the eyes.
Red light therapy delivers specific wavelengths of red (630-660nm) and near-infrared (810-850nm) light to the body to stimulate cellular energy production, improve circulation, and reduce inflammation.
Unlike UV rays, which penetrate deeply and cause cellular damage, red and NIR light are non-ionising, meaning they do not break chemical bonds or cause mutations. Instead, they interact with mitochondria to enhance cellular function, even in the eyes.
In fact, this controlled exposure may have therapeutic effects on eye health. Some studies indicate that it could support retinal function, reduce inflammation, and even slow down age-related vision decline.
While the potential benefits are promising, direct and prolonged exposure to high-intensity red light can be uncomfortable. The main concerns associated with red light therapy and eye exposure include glare, temporary eye strain, and potential irritation for individuals with light sensitivity.
The necessity of protective eyewear depends on several factors:
Low- to medium-intensity red light therapy devices do not typically require protective eyewear when used at a proper distance. The light is bright but not harmful to eye structures.
However, high-powered panels, laser-based devices, or focused beams emit more concentrated light, which can lead to discomfort if viewed directly.
The closer the device is positioned to the face, the more intense the brightness, increasing the likelihood of temporary glare and eye strain. One example of this is red light masks, which is why these devices often come with eye protection or instructions from the manufacturer to use eye protection.
Brief sessions lasting a few minutes are unlikely to cause any discomfort, but extended exposure to bright red light may lead to temporary eye fatigue.
If your eyes feel strained or sensitive after a session, reducing the session length or wearing lightly tinted protective glasses can help minimise discomfort while still allowing beneficial wavelengths to penetrate your skin.
Those with conditions such as photophobia (light sensitivity), dry eye syndrome, or retinal disorders may be more prone to irritation. In these cases, wearing protective eyewear may improve comfort and reduce unnecessary strain.
Individuals who also have recently undergone eye surgery or have conditions like glaucoma should seek advice from an optometrist before starting red light therapy to ensure it is safe for their eyes.
These should always be taken into account when deciding whether to use protective eyewear. Some red light therapy devices come with optional goggles, particularly those designed for higher-intensity treatments.
If a device includes protective eyewear, it is likely intended to reduce discomfort rather than prevent harm. Always follow the manufacturer’s guidelines for safe and effective use.
For most users, red light therapy at home is safe for the eyes and does not require protective eyewear when used at the correct distance and duration. However, if you find the brightness uncomfortable, have light-sensitive eyes, or are using a high-powered device close to your face, lightly tinted glasses can help reduce glare without diminishing the therapy’s effectiveness.
If you're looking for a high-quality red light therapy device that is both effective and designed for safe at-home use, Rojo Light Therapy offers premium solutions to suit your needs. Explore our range today or contact us for more inquiries.
