Hot Topics
UNDERSTANDING BLUE LIGHT
FREQUENTLY ASKED QUESTIONS ABOUT BLUE LIGHT
1. Is blue light harmful?
Yes, but only a portion of the blue light (high energy blue-violet light near the lower side of visible light spectrum) is harmful for the eyes.
2. What is wrong about blue light?
Blue light has a short wavelength and so it produces an excessive amount of energy. Exposure to this light over time may result in eye problems like macular degeneration and damage to the retina. Also, blue-violet light causes more glare than other type of light leading to eye fatigue.
3. Am I only exposed to blue light when working on my laptop or smartphone?
No, blue-violet light is also emitted by TV screens, LED (used for indoor lightning) and also by sunlight present in the outdoors.
4. How do eyeglasses help?
A special lens material and coating in eyeglasses filter out harmful blue light protecting your eyes against its harmful effects.
SPOTLIGHT ON UV RAYS
ARE THEY DANGEROUS FOR YOUR SKIN ONLY?
- No, they are equally harmful for the eyes. You can protect your skin from the effect of UV rays by using sunscreen lotions, but what about your eyes?
- Yes, these rays are harmful for the eyes too. Prolonged exposure to them may cause premature aging of the eyes as well as increases the risk of developing eye diseases like cataract. Hence, you need to wear protective eyewear that is UV protected sunglasses.
- Actually, only selected sunglasses lenses offer 100% protection from the UV rays. Lenses with an E-SPF index, filter out UVA and UVB rays on both sides of the lens, protecting your eyes. Remember, the higher the E-SPF index, the better protection it offers.
