👓 Why do some people need glasses?

Some people need glasses because their eyes don't see things clearly, just like when a camera lens is a little blurry! 👀✨ Glasses help their eyes see better, like magic windows that make everything sharp and bright.

Imagine trying to read a book with smudgy glasses—it's hard! That's why some people wear glasses to help their eyes work better. 😊

People wear glasses because their eyes might not focus light correctly onto the back of the eye (the retina). This can happen for different reasons:

• Nearsightedness (myopia): They see close things clearly but far things blurry. 🌳➡️📖
• Farsightedness (hyperopia): They see far things better than close ones. 📖➡️🌳
• Astigmatism: Light bends unevenly, making everything a little fuzzy. 🔄

Glasses bend light just right so the eyes can see clearly again! Scientists call this 'correcting vision.' 👩‍🔬

Glasses correct vision problems caused by the shape of the eye or how it focuses light. Here's how it works:

Common Vision Issues:

• Myopia (nearsightedness): The eyeball is too long, so light focuses before the retina. Glasses use concave lenses to diverge light. 🔍➖
• Hyperopia (farsightedness): The eyeball is too short, so light focuses behind the retina. Convex lenses converge light. 🔍➕
• Astigmatism: The cornea is irregularly shaped, causing blurred vision at all distances. Cylindrical lenses fix this. 🔄

Glasses adjust the light's path so it hits the retina perfectly. Without them, the brain gets fuzzy images! 🧠👓