The Question Every Eyeglass Wearer Has Asked
"Doctor, if I wear my glasses, will my number increase?"
It's one of the most widely believed myths in eye care, and it's understandable why it persists. Many people notice that once they start wearing glasses, their prescription seems to change every year or two, and it's easy to connect the dots and assume the glasses themselves are somehow making things worse. But here's the truth: wearing glasses does not increase your number, and avoiding them does not keep your number lower. Let's break down why this myth exists, and what's actually happening to your eyes over time.
The Simple Answer: Glasses Don't Change Your Prescription
Glasses are a corrective tool, not a treatment that alters the underlying structure of your eye. Your "number" (your refractive error, whether it's myopia, hypermetropia, or astigmatism) is determined by the shape of your eyeball, your cornea, and how light focuses onto your retina. Glasses simply bend incoming light so it focuses correctly, giving you clear vision. They don't reshape your eye, strengthen or weaken your eye muscles in a way that changes your prescription, or influence the natural progression of your refractive error in either direction.
So whether you wear your glasses diligently every single day, or you resist wearing them and squint your way through life, your underlying number will follow its own natural course, largely unaffected by whether or not glasses are sitting on your face.
Why Does It Feel Like Numbers Increase Because of Glasses?
This myth usually takes root because of a simple coincidence in timing. Refractive errors, especially in children and young adults, tend to increase naturally as the eye continues to grow and develop. This is a normal physiological process and has nothing to do with glasses use. Since most people start wearing glasses around the same time their number is first detected, and their number continues to change in the following years (because that's simply how the eye develops), it's easy to mistakenly connect the two events and assume cause and effect.
In reality, the number would have followed the same trajectory whether or not glasses were worn. If anything, not wearing prescribed glasses often leads to unnecessary squinting and eye strain, without offering any protective benefit against the number increasing.
A Simple Way to Understand It
Think about it this way: when you wear a sweater on a cold day, your body temperature doesn't actually change. Your body is still exactly as warm or cold as it would be without the sweater. What changes is your comfort. You feel warmer and more at ease because the sweater is doing its job of shielding you from the surrounding cold.
Glasses work exactly the same way. They don't change what's happening inside your eye. What they do is help you interact with the world more comfortably and clearly. Wearing them makes you see sharply and reduces the strain of trying to focus on blurry images, but they aren't altering your eye's underlying prescription in either direction.
So Why Should You Wear Your Glasses Anyway?
If glasses don't affect your number, some people wonder if it's fine to skip wearing them altogether. The answer is: it's still a good idea to wear the glasses prescribed to you, for a different set of reasons:
- Comfort and clarity. Straining to see clearly, whether reading, working, or driving, is tiring and can lead to headaches and fatigue. Glasses eliminate this unnecessary effort.
- Safety. Blurred vision, especially at a significant power, can affect your ability to drive, read signage, or navigate spaces safely.
- Reduced eye strain. Constantly squinting or straining to focus without correction can contribute to tired, uncomfortable eyes over the course of a day.
- Better quality of life. Whether it's enjoying a movie, reading a book, or simply seeing a loved one's face clearly across the room, corrected vision simply makes everyday life more enjoyable.
What Actually Causes Numbers to Change?
Since glasses aren't the culprit, it's worth understanding what genuinely influences changes in your refractive error over time:
- Age and eye development, especially in children and teenagers, whose eyes are still growing
- Genetics, since refractive errors often run in families
- Excessive near-work, such as prolonged reading or screen time, especially without breaks
- Insufficient outdoor time, which some studies associate with progression of myopia in children
- Underlying eye conditions that require proper diagnosis and monitoring
Because these factors are the real drivers behind changing prescriptions, regular eye check-ups are far more valuable than avoiding glasses in an attempt to "protect" your number.
The Bottom Line
Wearing your glasses will not make your number worse, and skipping them won't keep it from changing either. Your prescription changes based on natural eye growth, genetics, and lifestyle factors, not on whether you choose to wear your prescribed glasses. So there's no reason to avoid wearing them out of fear. Instead, focus on wearing the correct prescription consistently, getting your eyes checked regularly, and maintaining healthy visual habits.
If you've been putting off wearing your glasses because of this myth, or if you're unsure whether your current prescription is accurate, it's worth getting a proper evaluation. An experienced eye specialist in Mumbai can assess your exact prescription and guide you on how often you should be monitoring changes, especially if you have children whose eyes are still developing. The team at The Vision Eye Center, a trusted eye clinic in Vile Parle, offers comprehensive eye examinations to ensure your prescription is accurate and up to date. Whether you're due for your first pair of glasses or simply want clarity on your eye health, consulting a reliable eye doctor in Vile Parle is always a smart first step.
