Do LED Neon Signs Hurt The Eyes?

Because neon signs are so alluring, it's nearly hard to avoid staring at them. But you know the proverb that cautions against having too much of a good thing, right? It is general knowledge that staring directly at a source of intense light, such as the sun, a CFL (compact fluorescent light), or a neon sign, can cause harm to one's eyes.

There is no danger to the eyes posed by warm-white LED neon signage. They don't have a lot of power, and the amount of blue light (400–490 nm) they emit is negligible. In the following sections of this paper, we will delve deeper into several aspects of the investigation.

The answers to these and other questions regarding the impact that LED lighting has on the eyes are provided in the following paragraphs.

Which types of bulbs offer the biggest risk to our ability to see clearly?

According to one piece of research, the "2000 to 3500 K and greater than 500 nm range of light is safe." This indicates that our eyes are susceptible to the harm that can be caused by blue light, which is part of the visible spectrum.

However, depending on its wavelength, blue light can be categorised as short-wave or long-wave. One of these citations is titled "Blue Light and Displays" and was written by Gary Heiting. Eyesafe In point of fact, the wavelengths of blue light ranging from 415 nm to 455 nm can irritate one's eyes.

According to a study conducted in 2018, short-wave blue light may cause sleep disruption and dry eyes. The human eye is not damaged by blue light with longer wavelengths ranging from 455 to 495 nanometers.

It has even been established that these longer-wavelength blue lights can assist with the control of sleep. LEDs that emit a COLD-WHITE light, in contrast to LEDs that emit a WARM-WHITE light. The colour temperature emitted by a standard warm white LED bulb is around 3000K.

The colour temperature known as warm white is the one that most closely resembles the light produced by an incandescent (regular) light bulb. It offers a gentler form of illumination, suitable for use in various residential settings.

Compared to a warm white LED, which generates a colour temperature of 3000 to 4000 Kelvin (K), the cold white LED produces a temperature of 5000 to 6000 K. The lighting in the kitchen and bathroom should be LEDs with a cool white colour temperature.

Most of today's LED lights generate white light by radiating outward from a blue LED coated in phosphor. LEDs with a wavelength close to 470 nm do not release any ultraviolet (UV) rays that could be harmful.

How exactly do our retinas perceive the visible light to the naked eye?

With all of their many specialised components, your eyes work together as a unit to provide you with the ability to see. The cornea, the transparent front layer of the eye, is where light first enters the eye. The cornea functions similarly to a dome in that it bends and refracts light, which enables the eye to focus.

The pupil is the opening in the centre of the back of the eye that allows light to enter. The amount of light penetrating the eye is controlled by a slit known as the iris. The iris is the coloured portion of the eye. The lens, a translucent component of the eye's inner structure, then permits light to pass through it.

The cornea is the part of the eye that allows light to enter, and the lens is the part that focuses that light onto the retina. The retina is a layer of tissue sensitive to light and can be found in the back of the eye. In the retina, you'll find cells that are known as photoreceptors.

Photoreceptors are specialised cells that send out electrical signals in response to the presence of light. These impulses will be sent to the brain by rods and cones via the nerves that connect them to the retina.

These electrical impulses are carried along the optic nerve from the retina to the brain. After that, the brain assigns meaning to these signals, which results in your perception.


The most recent advancement in lighting technology is the use of neon LEDs. The use of neon LED is becoming increasingly widespread and can now be found in anything from celebratory signage to display cases for advertisements. LED neon lights can produce colours across nearly the entire visible spectrum.

When looking at light emitted from a neon LED, yellow is the most pleasing to the human eye. Because the wavelength of the yellow neon LED light is longer, it is easier for the eyes to look at. It is visible even from a great distance away.

On the other hand, we must be watchful to prevent our eyes from being overly focused on any one colour. One of its many advantages is that neon LED lights may be dimmed. You can lessen the amount of strain placed on your eyes and prevent damage to your eyes by adjusting the brightness of the light.

SUN PROTECTION FOR YOUR EYES UV rays can be produced by various sources, ranging from the sun to electronic equipment. By adopting specific preventative measures, you can lessen the impact of ultraviolet (UV) rays on your ability to see clearly.


Decreasing the total time spent in the sun is an easy way to prevent overexposure to the light. Take breaks away from the screen regularly so your eyes can rest. The 20-20-20 rule is another helpful piece of advice that should be considered.

Take a 20-second break away from the screen every 20 minutes to give your eyes a rest and prevent eye strain. Employing this technique helps alleviate the strain that is placed on the eyes. A further benefit is that it is a continual reminder to stay out of the sun whenever possible.

Put on some virtual reality goggles and see what it's like. You should invest in a nice pair of computer glasses if you stare at displays for long periods. To block out UV radiation, the lenses in computer eyewear typically have a yellow tint.

You can place an order for glasses that are tailored to your unique working distance. Then, it will aid in minimising eye strain and relaxing the eyes during work. GET NO-GLARE GLASSES No-glare lenses are a worthwhile investment if your job requires you to work at night. The ability to see colours, peripheral details, and depth at night diminishes.

However, anti-reflective lenses improve nighttime visibility and reduce eye strain. The lenses improve visibility and shield the wearer's eyes from potentially damaging glare. In addition, it can help reduce eye strain.


There are also pharmacological options that can help protect your eyesight from harm. In particular, those in the know have advocated for vitamin C, vitamin E, zinc, lutein, and zeaxanthin supplementation. The risk of developing eye illness was reduced by 25% in people who took these pre-mixed eye vitamins.


Scientists are worried about people being exposed to LED lights for extended periods. Age-related macular degeneration (AMD) is a major reason people go blind in developed countries. However, research has shown that LED poses little threat to the general public.

Overexposure in the evenings and at night might disrupt the body's natural sleep rhythm. However, the study did mention that young children and other vulnerable populations may be at risk from LED pollution.

According to the research, kids are more vulnerable to the effects of blue light. Light high in blue may irritate the eyes of older people. According to previous research, long-term exposure to strong sunlight has been linked to visual difficulties.

They traced the issue back to the prevalence of blue light during the day.

if you're concerned about potential damage to your eyes from LED lighting, keep in mind the following: Be aware of the LED's wavelength when using it. Avoid prolonged exposure to sunlight, as it may damage your eyes.

If you need to filter the screen, do so. Select soft yellow or warm white LED bulbs to avoid straining your eyes. The light emitted by LEDs is not harmful to human eyes, but prolonged exposure can have negative effects. Protecting your eyes from ultraviolet (UV) radiation is a top priority.