Why Do Sunglasses Have Zero Power?

Thread starter pkpaul26
Start date Mar 2, 2011
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Lens

In summary, sunglasses have zero power because they are designed to protect our eyes from harmful UV rays and reduce glare, not correct vision. They can still provide UV protection and some sunglasses may have a prescription or magnifying power. There is a difference between sunglasses with zero power and regular glasses with no tint, and it is not necessary to wear sunglasses with zero power indoors as it may impede vision in dimly lit environments.

Mar 2, 2011

pkpaul26

I have an interestng question.

Though sunglasses have curved surfaces-why they have zero power?

Can u answer me?

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Mar 2, 2011

schip666!

They usually have the same curve on both sides, due to having a constant thickness.

Mar 5, 2011

pkpaul26

I have got my answer...thank you all...

1. Why do sunglasses have zero power?

Sunglasses have zero power because they are designed to block out harmful UV rays and reduce the amount of light that reaches our eyes, making our vision more comfortable and clearer. This means that they do not have any prescription or magnifying power, as they are not intended to correct vision.

2. Can sunglasses with zero power still protect my eyes?

Yes, sunglasses with zero power can still protect your eyes from UV rays and other potential eye hazards, such as bright sunlight or glare. It is important to choose sunglasses with 100% UV protection to ensure the best protection for your eyes.

3. Do all sunglasses have zero power?

No, not all sunglasses have zero power. Some sunglasses may have a prescription or magnifying power to correct vision, while still providing UV protection. These are often called prescription sunglasses.

4. Is there a difference between sunglasses with zero power and regular glasses with no tint?

Yes, there is a difference between sunglasses with zero power and regular glasses with no tint. Sunglasses with zero power are specifically designed to block out UV rays and reduce glare, while regular glasses with no tint do not have this added protection.

5. Can I wear sunglasses with zero power indoors?

Yes, you can wear sunglasses with zero power indoors, but it may not be necessary. Since sunglasses with zero power are designed to reduce the amount of light that reaches our eyes, they may make it difficult to see clearly in dimly lit environments. It is best to remove your sunglasses indoors to avoid any potential hazards or accidents.