Every year, the second Thursday of October is designated by the World Health Organization (WHO) as World Sight Day.

Adventurers, have you ever heard the term "minus vision"?

In honor of World Sight Day, let's find out what minus vision entails!

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[What’s Minus Vision?]

"My vision got worse, so it's minus now."
The term "minus vision" often pops up when discussing poor eyesight.

According to medical experts,
there's actually no such thing as "minus vision."



How did this misunderstanding arise?

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[The Truth About Minus Vision]

The term "minus vision" originates from the minus sign on glasses prescriptions and lens power charts.
This indicates the need for concave lenses (-) instead of convex lenses (+) for myopia correction.
In reality, vision measurements can't go below zero.


▲ Minus vision refers to the prescription of concave lenses for correcting myopia.

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With modern life focusing more on close-up objects, myopia is becoming more common.
What habits can help prevent this threat to our eyes?
Avoid reading or using smartphones in shaky environments
Using devices in places like buses or trains can increase the risk of myopia


▲ Try to avoid focusing on close objects in shaky environments.

Increase outdoor activities and get sunlight
Regular outdoor activities help your eyes focus on distant objects.
Lack of sunlight can speed up myopia progression, so getting plenty of sunlight outdoors is beneficial.



On this World Sight Day, we've shared some eye health tips!
If you know other methods, feel free to share them in the comments.
Let's all adopt good habits for healthy eyes!

 

You can find more tips in our notice for last years World Sight Day!