1. Light plays an important role in the sensation of vision.
2. Now a day’s people, due to the usage of modern gadgets, like mobile phone, computers, televisions through which light enters the eyes.
3. Watching TV too much or sitting very close to it may make your eyes-tired cause dryness of eyes and gradually lead to headache.
4. While using computer or TV ensures that your room is well lighted.
5. While watching TV or computer a simple rule 20 – 20 – 20 helps us in protecting eyesight.
6. After 20 minutes of watching TV or computer screen, take 20 seconds break and watch the TV or computer around 20 feet away.
7. Reduce blue light in cell phones and computers are switched on power saving mode during night.
8. Yellow light has been proven effective in protecting retina than blue light which causes damage to retina.
