Does Astigmatism Get Worse Along With Myopia? Here’s What You Need to Know

author: Gina shang

2026-05-12

First, let’s clear up the basics: Myopia is when you can’t see distant objects clearly (think blurry road signs or whiteboards), while astigmatism causes double vision or distorted vision—even at close range. To put it simply: Myopia is blurriness across the board, but astigmatism is blurriness in a specific direction. Unlike myopia, which is measured just by degree, astigmatism also has an “axis” (a specific angle)—get the axis wrong, and your vision will still feel off, even with the right degree.

Now, back to the big question:Does astigmatism worsen when myopia gets worse?

The short answer: No, astigmatism and myopia don’t have a direct cause-and-effect relationship. Their growth depends on different factors, because they stem from different eye structures.

Myopia is mainly caused by a lengthening of the eye’s axial length (the distance from the front to the back of the eye). The longer the eye, the more blurry distant objects become, and the higher your myopia degree. Astigmatism, on the other hand, is mostly related to the shape of your cornea or the position of your lens—not the length of your eye. These structures stabilize as we grow (especially during adolescence) and don’t change significantly just because the eye axis gets longer.

Most astigmatism is congenital—meaning you’re born with a slightly asymmetrical cornea or lens, which causes light to focus unevenly on the retina. As you age, minor changes in eye tissue or slight physiological shifts in the eye axis might cause tiny fluctuations in your astigmatism degree or axis. But these changes are usually minimal, within a normal range, and won’t noticeably affect your vision. Importantly, these fluctuations have nothing to do with whether your myopia is getting worse.

Do You Need to Correct Astigmatism?

It depends on your degree and how it affects your daily life:

Low astigmatism (usually below 0.50D): If you don’t feel any blurriness, eye strain, or discomfort, you might not need correction. But if you often feel tired eyes, headaches, or have trouble focusing (especially when reading or using screens), a pair of glasses can significantly improve your visual comfort.
Children and teenagers: This group needs extra attention. If a child has astigmatism above 1.00D, it’s recommended to get corrective glasses as soon as possible. When kids can’t see clearly, they may unconsciously squint or tilt their heads to compensate. Over time, this strains the eye muscles, causes fatigue, and may even accelerate the lengthening of the eye axis—making myopia worse.

3 Common Myths About Astigmatism Correction (Debunked!)

There’s a lot of misinformation about astigmatism—let’s set the record straight:

Myth 1: Astigmatism can “heal on its own” and doesn’t need correction. Fact: Astigmatism is caused by structural differences in the eye (like a cornea that’s more oval than round), which won’t go away with age. Ignoring it for a long time will only加重 eye strain, and in children, it can even affect normal vision development.
Myth 2: When getting glasses, only the astigmatism degree matters—axis doesn’t. Fact: Even a small mistake in the axis (just a few degrees) can cause double vision, dizziness, or eye fatigue. Always get a professional eye exam to confirm the exact axis before getting glasses.
Myth 3: Adults with stable astigmatism don’t need regular eye checks. Fact: While adult eye structures are more stable, long-term bad eye habits (like prolonged screen time) or eye conditions can still affect your astigmatism. It’s recommended to get a vision check at least once a year to ensure your correction is still accurate.

At the end of the day, astigmatism and myopia are two separate vision issues—one won’t make the other worse, but both need proper care. Whether you’re dealing with low astigmatism or moderate myopia, the key is to get regular eye exams and choose the right correction method for your needs. Your eyes deserve the best care—don’t let misinformation hold you back from clear, comfortable vision.

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