Finding out you need to wear glasses may come as a relief if you can suddenly see clearly but it may also come as a surprise if you saw clearly before. There are multiple reasons for needing glasses and not all glasses are only for correcting blurry vision.

What is Healthy Vision?
Vision is an active process that is much different than just simply seeing. If someone can physically detect an object, they can see it but to interpret, analyze, and form a coherent thought about the object requires vision.

With this definition, it is possible to begin to understand why not all visual issues are solely related to blurry vision.

Certainly, if an object is not clear and appears blurry that is not healthy vision. This is the case for nearsighted individuals who need glasses to see clearly.

However, if words run together move around on the page when reading that is also not a healthy visual system despite the fact that the words may be clear.

For an individual to have healthy vision, it must be clear, single, and flexible. If an object appears blurred, an object appears double, or if the visual system cannot interact with the object appropriately, then the vision is not healthy.

Glasses for Blurry Vision
The most common reason for needing glasses is to correct blurry vision. Whether the blurry vision is in the distance (such as nearsightedness), up close (such as farsightedness), or both (such as astigmatism), glasses can be useful to provide clarity in these cases.

These glasses will make a noticeable difference once they are worn for the first time.

In many cases, if you need glasses for blurry vision, you will always need glasses, contact lenses, or have to have a refractive surgery.

To determine if glasses can improve your blurry vision, your eye doctor will perform a refraction by trying different lenses to find the best option for your glasses.