Few of us need a description of blurred vision because we’ve likely all experienced it, either occasionally (like when we’ve had too much computer time) or continuously, such as when we’re not wearing our corrective lenses.

Refractive errors, also known as nearsightedness or farsightedness, are the most common cause of blurry vision. According to the National Eye Institute, most people have at least one refractive error.

But what happens if your vision suddenly begins to worsen or becomes blurry out of nowhere? Addressing it as soon as possible is important because there could be a serious underlying cause.

There are many reasons why your vision may suddenly become blurred. Luckily, plenty of lifestyle habits and supplements can help keep your eyes healthy.