A “black light” may not emit much visible light, but it does produce a lot of invisible ultraviolet (UV) light. This UV light can cause sunburn on the eyes, known as photokeratitis, with continuous exposure. However, the long wavelengths of UV light emitted by black lights are unlikely to cause significant harm with normal routine use. Exposure to artificial UV sources can cause serious eye damage, but temporary damage usually heals within a couple of days.
Permanent damage usually only happens right away with extreme exposure. Any exposure to UV light increases the cumulative impact on the eyes. Black lights are usually fluorescent lamps or incandescent bulbs modified to allow only the emission of UVA rays and some visible light. Pet owners use UV bulbs to give reptiles vitamin D, and fluorescent bulbs are used as lighting sources in homes, offices, and stores. New technologies on the horizon also eliminate UV radiation from the back of the light reflected on the back of the lenses.
However, because UV light can still damage the eyes, it is advisable to use UV protection when you expect extended exposure to black light. This contrasts with other UV light sources (such as a tanning bed), which have a longer range and include shorter UV light wavelengths. Many insects can see UV light, so they often use black lights in insect traps like “bug killers”. While conditions such as photokeratitis and photoconjunctivitis usually disappear as the eyes heal, the exposure they represent contributes to the cumulative effect of UV light on the eyes and vision. This glow is the energy emitted by light that is converted into visible light by particles called phosphors. Instead of emitting visible white light, the phosphor layer of black lights absorbs UV light and emits a longer form of UV light. UV black lights have both risks and benefits associated with them.
On one hand, they can be used for a variety of purposes such as pet care, insect control, and lighting in homes and businesses. On the other hand, they can cause eye damage if not used properly or with adequate protection. It is important to understand that any exposure to UV radiation can be damaging to your eyes over time. Therefore, it is important to take precautions when using black lights. Wear protective eyewear when using black lights for extended periods of time or when working in close proximity to them.
Additionally, it is important to keep children away from black lights as their eyes are more sensitive than adults. In conclusion, while black lights can be beneficial in certain situations, it is important to understand that they can also be dangerous if not used properly or with adequate protection. It is important to take precautions when using black lights and to ensure that children are kept away from them.
