Are LED plant growth lights harmful to humans?

LED plant light sources are mainly composed of red and blue light sources. The most sensitive light bands of plants are adopted, and the blue wavelengths are 450-460nm and 460-470nm.
Blue light is a light with relatively high energy with a wavelength between 400nm-480nm. It exists in a large number of computer monitors, fluorescent lamps, mobile phones, digital products, display screens, LED and other light. Blue light within this wavelength will increase the amount of toxins in the macular area of the eyes, and seriously threaten the health of our fundus when viewed for a long time.
What are the specific hazards of blue light:
1. Blue light will aggravate macular disease
With age, lipofuscin (cell debris) will accumulate in the layer of RETINAL pigment epithelium (RP) cells after the phagocytosis, making the retina more sensitive to chronic light exposure.Blue light can exacerbate macular problems related to genetics, nutrition, the environment, health habits, and aging.After long exposure, retinal toxicity will increase with the shortening of the wavelength, thus aggravating macular disease.
2. Blue light can lead to fundus injury after cataract surgery
As we age, the lens itself tends to turn yellow.This helps filter out blue light.After cataract surgery, however, patients lose these natural barriers.Blue light will direct to the retina, and then damage the retinal pigment epithelial cells, seriously affecting the fundus health.
3, blue light can have blurred vision, resulting in visual fatigue, causing VDT syndrome
Blue light comes into the eye and it comes into focus and the focus doesn't fall on the retina but falls between the retina and the lens.This increases the chromatic distance from which the light rays can be focused in the eye.The distance between the focal points in the eye is the main cause of blurred vision, so the blue light will increase the color difference and blurred vision, when the eye muscles are excessively tense, the blood supply to the eyes is excessively tense, and the blood supply to the eyes is strengthened, thus aggravating fatigue.
Blue light can glare
Blue light has higher energy between 400nm-500nm.Light with higher energy scatters more when it meets small particles in the air, and blue light is the main cause.
Blue light can inhibit the secretion of melatonin, disturb sleep, and increase the incidence of major diseases
Blue light is enough to stimulate the brain and make it in an excited state, which can affect the circadian rhythm, resulting in insomnia symptoms such as taking too long to fall asleep and waking up repeatedly during sleep.
Poor sleep means that every organ system is prone to dysfunction.People who do not get enough or poor quality sleep have significantly reduced immune function, reflexes, memory and coordination, and are more likely to suffer from diabetes, heart disease, cancer, obesity, indigestion, constipation, depression and other diseases.
Blue light does a lot of harm, so people buy a lot of electronic products now will buy an anti-blue light membrane, such as mobile phones, tablets, computers and so on.Blue light almost exists in most of the light sources. The blue and red light spectral bands of plant fill light products are concentrated and the energy is higher than ordinary lamps. Therefore, it is not recommended to stare at the lamp for a long time when using plant fill light products.
Source: Zhihu