What Causes Astigmatism to Get Worse?
Astigmatism, a common refractive error affecting the eye's shape, can be a lifelong condition. While many are born with it, some experience a worsening of their astigmatism over time. Understanding what might contribute to this change is crucial for effective management and vision correction. This isn't necessarily about the astigmatism itself getting worse in the sense of the eye's shape fundamentally altering, but rather a change in the refractive error that requires a stronger prescription.
Several factors can contribute to a perceived worsening of astigmatism:
1. Changes in the Eye's Shape (Especially During Childhood and Adolescence):
This is perhaps the most significant contributing factor, especially during periods of rapid growth. The cornea (the eye's clear front surface) and lens are constantly undergoing subtle changes, particularly during childhood and adolescence. These changes in shape can directly impact how light focuses on the retina, leading to a change in the refractive error, including astigmatism. While the eye generally stops growing in early adulthood, subtle changes can still occur, albeit less dramatically.
2. Eye Injuries or Diseases:
Trauma to the eye, such as corneal abrasions, infections (like keratitis), or surgeries, can distort the shape of the cornea and lead to changes in refractive error, including increased astigmatism. Certain eye diseases, like keratoconus (a progressive thinning of the cornea), can also significantly worsen astigmatism over time. These scenarios require immediate medical attention and are not simply about a gradual worsening but a sudden, potentially severe change.
3. Age-Related Changes:
As we age, the lens within the eye loses its elasticity and flexibility, a process called presbyopia. This can affect how light is refracted and, in some individuals, contribute to a change in astigmatism, although this is less common than changes in near vision.
4. Refractive Surgery Complications (Rare):
While refractive surgery like LASIK can correct astigmatism, there's a small chance of unexpected outcomes, including changes in astigmatism post-surgery. This is usually addressed through follow-up appointments and adjustments.
5. Incorrect or Outdated Prescription:
Sometimes, a perceived worsening of astigmatism is merely a result of an outdated or incorrect prescription. Regular eye exams are crucial to ensure your prescription accurately reflects your current refractive error. A new prescription might not necessarily indicate a worsening of the underlying astigmatism, but rather a more precise correction of the existing condition.
Why Does My Astigmatism Seem to Get Worse?
This is a common question, and the answer often lies in a combination of factors mentioned above. It's crucial to understand that while the underlying eye shape may undergo subtle changes, the perceived "worsening" is often a matter of a greater refractive error demanding a stronger prescription.
What Should I Do if I Think My Astigmatism is Getting Worse?
Schedule a comprehensive eye examination with an ophthalmologist or optometrist. They can accurately assess your vision, determine if your astigmatism has actually worsened, and rule out any underlying eye conditions. Early detection and intervention are key to managing any vision changes effectively.
This information is for general knowledge and does not constitute medical advice. Always consult a qualified eye care professional for diagnosis and treatment.
