are led grow lights bad for your eyes

Published by Cretivity 2021-08-02

LED grow lights are widely used, although the light it emits is the same as sunlight. But part some of the light radiation is still harmful to people.


The light emitted by LED lights is harmful to our eyes


The application of LED lights in various fields and the development of LED light technology have made LED plant growth lights more and more people use. LED grow lights are currently the most widely used. At present, LED grow lights are full-spectrum, not only white light but also ultraviolet light, far-red light, blue light, red light, etc. Although they are great for plants, they can also give people eyes. It's hurting.


There is a saying that LED lights can harm our eyes and even cause blindness. Of course, the damage to the human body is very small, and it only hurts our eyes, provided that you look at the lights for a long time. After all, the light emitted by the LED growth lamp simulates the sun's light, and you will also harm your eyes when you look at the sun.


Will LED grow lights damage your eyesight?

That's for sure, LED plant growth lights will hurt your eyes.

But it depends on the intensity of the light and the length of time your eyes look at the light.

What types of light can cause us harm?


Any type of light can be harmful to our eyesight, as long as it is strong enough. If you have ever looked directly at a powerful light source, you will know this (hoping to look away quickly enough before causing any serious damage).


However, certain types of light are more harmful than others, and even a small amount of certain light can damage our eyes.

Yes, before we discuss these types of light, let's take a look at the complete electromagnetic spectrum.


solar spectrum



As you can see, the range of light visible to the human eye occupies a narrow band, sandwiched between ultraviolet light (shorter wavelength) on the left and infrared light (longer wavelength) on the right.


Simplify things a bit: The shorter the wavelength, the greater the harm to us.
Therefore, the wavelengths of light we need to worry about most are blue light and ultraviolet light, the latter being more dangerous than the former.
Ultraviolet rays are further decomposed into UV-A, UV-B, and UV-C. UVA is the closest to visible light, which means it has the longest wavelength and the least harm. UVC is the most harmful.


The light from the sun contains all three, but our atmosphere filters out most of the UV-C light. UV-A and UV-B pass through the atmosphere and cause us harm. They are the reason why we need to apply sunscreen and UV protection sunglasses.

When it comes to artificial plant growth lights, they all contain varying degrees of blue light and ultraviolet light. Red grow lights, such as HPS, contain only a small amount. Bluer lamps, such as metal halide or fluorescent lamps, contain more.

LED grow lights are slightly more complicated.

Is LED grow light harmful to the human body?


Yes, LED plant growth lights are harmful to the human body, but they are very small, and the damage to the eyes will be greater. After all, the eyes are very fragile. You can bring eye protection glasses to protect your eyes.


The effect of LED lights on the eyes


Most LED lamps contain different levels of blue light and UV-A diodes. Some also contain UV-B diodes (very rare) or complementary UV-B bulbs. These lamps may also emit some UV-C light.

We now know that both UV-A and UV-B light can harm our eyes, and blue light can also cause negative effects. Whether we need to worry depends on the degree of exposure.


Do LED plant lights need glasses?

Yes, if it’s a small LED growth light used in your home, you don’t need to worry about this, but if you use a larger LED growth light to shine better, you should wear eye-protection glasses. It's like the sun's rays will hurt you when you look at it for a long time.

LED plant light eye protection

You have many options.

Most people would advise against wearing ordinary sunglasses. That's not because they don't protect the eyes. Rather, this is because they are not designed for the unique light emitted by grow lights.

This means that if you use ordinary sunglasses, your plants will look unnatural.

Planting glasses adjusted to a specific spectrum will make your plants look completely natural when viewed through the glasses. This makes it easier to inspect plants and detect any signs of discoloration or other problems.

The main problem here is that you need glasses made for the precise spectrum of your light. Ordinary LED glasses are suitable for most lights that mainly mix red and blue diodes, but they are not perfect because the spectrum of all these lights is slightly different.

If you have an all-white LED, then you are actually better to use HPS or MH glasses, depending on the color temperature of your lamp (MH glasses are used for colder lights, HPS glasses are used for warmer lights).

Warm reminder, use led plant growth lights with glasses to protect your eyes.

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