People often struggle after an eye exam, wondering: "I only have 50 degrees (0.50 diopters) of astigmatism—should I include it in my prescription? If I do, I’m worried about feeling dizzy; if I don't, I’m afraid the prescription will keep going up." Others might say: "You don't need glasses for astigmatism; your eyes will adapt on their own."
There are simply too many misconceptions surrounding astigmatism. So, will leaving astigmatism uncorrected directly cause your prescription to worsen? This is a common concern for many. The short answer is: it won't necessarily make your prescription "deeper," but it will indeed lead to various other eye issues, and can even cause irreversible consequences in specific age groups.
To uncover the truth about astigmatism, let’s break it down into a few key points:
1. Understanding What Astigmatism Actually Is
The essence of astigmatism is that your cornea is not perfectly round. It is shaped more like a football (rugby ball) than a perfectly spherical basketball. As a result, light entering the eye cannot focus onto a single, sharp point, leaving you with a permanently blurred image. This shape is mostly congenital (present from birth) and generally stabilizes once you reach adulthood. In other words, a 50-degree astigmatism will not suddenly jump to 100 or 200 degrees simply because you didn't wear glasses. Why, then, do many people feel their astigmatism worsens over time? It is usually either because the initial eye exam wasn't precise enough, or because bad habits—such as chronic squinting, rubbing the eyes, or using a phone while lying on one's side—have put slight pressure on the cornea, causing minor fluctuations. It is not a progression caused by "leaving it uncorrected."
2. For Adults: Stable Prescriptions, But "Exhausted Eyes"
The eye development of an adult is completely set. For mild astigmatism, if you choose not to wear glasses, your astigmatism prescription will typically not skyrocket purely from a physiological standpoint. As long as you don't indulge in bad habits like squinting, some adults can adequately compensate for it.
However, going without glasses is not without its costs. Astigmatism causes blurry and doubled vision. To see clearly, your eye muscles will automatically over-accommodate. In an effort to fuse a blurry blur-circle into a sharp image, the brain constantly signals the ciliary muscles to strain, and you may unconsciously squint or knit your brows. By the end of the day, while others might only feel tired after 8 hours of screen time, you might experience dry eyes, soreness, headaches, and a lack of focus after just 4 hours. Over time, this leads to severe digital eye strain (visual fatigue). Remaining in this state of chronic fatigue can ultimately cause your accompanying nearsightedness (myopia) to worsen.
3. For Children and Teens: Severe Consequences If Left Uncorrected
If a child is diagnosed with astigmatism but does not get glasses in time, it is a completely different story.
- Stunted Visual Development: A child's visual system is still developing. If the brain is deprived of clear visual stimuli over a long period, it "gets lazy," leading to a standstill in visual development.
- Risk of Amblyopia (Lazy Eye): This is especially true for high astigmatism (generally over 200 degrees / 2.00 diopters). If the golden window for treatment (typically before the age of 6) is missed, it can easily lead to amblyopia. Once this happens, the vision cannot be corrected to a perfect 20/20 (1.0), even with glasses or laser eye surgery in adulthood.
People with astigmatism almost all share one identical symptom:
When astigmatism is uncorrected, vision typically drops noticeably in overcast or dimly lit environments. This symptom becomes even more pronounced for many drivers operating vehicles at night. Therefore, while leaving astigmatism uncorrected may not definitely increase the astigmatism itself, it almost always creates everyday visual hurdles. Furthermore, leaving it uncorrected—coupled with poor eye habits—can easily aggravate both astigmatism and nearsightedness. To ensure visual clarity, maximize eye comfort, and minimize the risk of worsening your prescription, correcting your astigmatism with proper eyewear is highly recommended.
Post time: Jun-24-2026
