What can happen when you view an eclipse incorrectly

Looking directly at the sun during an eclipse can cause serious and permanent eye damage, including solar retinopathy, which can lead to blindness. The sun's ultraviolet (UV) and infrared (IR) rays are particularly harmful to the eyes, and even a brief exposure during an eclipse can cause damage.

Symptoms of solar retinopathy can include:

• Blurred vision
• Decreased central vision
• Blind spots
• Difficulty seeing at night
• Pain in the eyes

In severe cases, solar retinopathy can lead to permanent blindness.

How to view an eclipse safely

The only safe way to look directly at the sun during an eclipse is through special-purpose solar filters, such as eclipse glasses or handheld solar viewers. These filters block out the sun's harmful UV and IR rays, allowing you to safely view the eclipse.

It is important to note that not all solar filters are created equal. Some filters, such as sunglasses, even very dark ones, are not safe for viewing the sun. When choosing solar filters, make sure they meet the following safety standards:

• ISO 12312-2:2015
• ANSI Z80.3:2015
• EN 169:2009+A1:2009

You can purchase eclipse glasses and handheld solar viewers from reputable retailers, such as astronomy clubs and science museums.

Tips for viewing an eclipse safely

• Never look directly at the sun without proper eye protection.
• Inspect your solar filters before use. If they are scratched, damaged, or torn, discard them.
• Supervise children at all times when they are using solar filters.
• Put on your eclipse glasses or hold your handheld solar viewer up to your eyes before looking at the sun.
• Turn away from the sun before removing your eclipse glasses or solar viewer.

Other ways to view an eclipse safely

If you do not have eclipse glasses or a handheld solar viewer, there are other ways to safely view an eclipse. One way is to use a pinhole projector. To make a pinhole projector, you will need two pieces of paper and a pin. Poke a small hole in the center of one piece of paper. Hold the paper up to the sun so that the light shines through the hole and onto the other piece of paper. You will see an image of the sun projected onto the second piece of paper.

Another way to safely view an eclipse is to watch a live stream of the eclipse on the internet or on television.

Conclusion

Eclipses are amazing natural events, but it is important to view them safely. By following the tips above, you can protect your eyes and enjoy the eclipse without any risk of injury.