Astigmatism: Causes, Symptoms, and Treatment Options

Causes of worsening astigmatism?

1.
Is rubbing the eyes a cause of keratoconus?
2.
If astigmatism deepens to around 300 degrees, is it definitely keratoconus, or could there be other causes?
3.
How long does it typically take to adapt to wearing glasses for astigmatism?
4.
If one eye frequently feels sore, what adjustments are recommended?
5.
Are there many people with high astigmatism in Taiwan?
6.
Is keratoconus considered a hereditary condition?
7.
Can an optical shop's refraction test detect keratoconus? Thank you very much, doctor, for taking the time to answer.

Wu Yan, 20~29 year old female. Ask Date: 2021/09/27

Dr. Gao Pilin reply Ophthalmology

Hello,
1.
It is possible, but generally, rubbing the eyes does not cause this unless it is done with excessive force and over a long period.
Please refer to: https://bit.ly/2XQEUMi
2.
Not necessarily; it could simply be astigmatism.

3.
Typically, with the appropriate prescription glasses, the adaptation period should not be long.

4.
An examination is needed to determine the cause.

5.
The incidence rate is low.

6.
There is a genetic predisposition.

7.
You should see an ophthalmologist, preferably a cornea specialist.

Reply Date: 2021/09/27

More Info

Astigmatism is a common refractive error in the eye that occurs when the cornea (the clear front surface of the eye) is irregularly shaped, causing blurred or distorted vision. Understanding the causes, symptoms, and treatment options for astigmatism is essential for maintaining good eye health. Below, I will address your specific questions regarding astigmatism and related conditions.

1. Is rubbing the eyes a cause of keratoconus?
Rubbing the eyes can contribute to the progression of keratoconus, a condition where the cornea thins and bulges into a cone shape. While eye rubbing itself may not directly cause keratoconus, it can exacerbate the condition in individuals who are already predisposed to it. Chronic eye rubbing can lead to mechanical stress on the cornea, potentially accelerating its deformation.

2. Does astigmatism deepening to around 300 degrees necessarily indicate keratoconus, or could there be other causes?
An increase in astigmatism to around 300 degrees does not automatically indicate keratoconus. While keratoconus is a possible cause, other factors can also contribute to increased astigmatism, such as regular astigmatism due to the shape of the cornea, previous eye surgery, or even certain eye diseases. A comprehensive eye examination by an eye care professional is necessary to determine the underlying cause.

3. How long does it take to adapt to wearing glasses for astigmatism?
The adaptation period for wearing glasses prescribed for astigmatism can vary from person to person. Generally, most individuals may take a few days to a couple of weeks to adjust to their new glasses. During this time, it is common to experience some initial discomfort or distortion as the eyes adapt to the new lenses. If discomfort persists beyond a couple of weeks, it is advisable to consult with an eye care professional.

4. What are the recommendations for managing frequent eye strain in one eye?
If one eye frequently feels strained or sore, it is essential to take regular breaks from activities that require intense focus, such as reading or using screens. The 20-20-20 rule is beneficial: every 20 minutes, look at something 20 feet away for at least 20 seconds. Additionally, ensuring proper lighting and ergonomics while working can help reduce strain. If symptoms persist, it is crucial to consult an eye care professional for a thorough evaluation.

5. Is there a high prevalence of astigmatism in Taiwan?
Astigmatism is prevalent worldwide, including in Taiwan. Studies suggest that a significant portion of the population has some degree of astigmatism, with varying degrees of severity. The exact prevalence can vary based on age, genetics, and environmental factors. Regular eye examinations are essential for early detection and management.

6. Is keratoconus a hereditary condition?
Keratoconus does have a genetic component, meaning it can run in families. While the exact cause is not fully understood, individuals with a family history of keratoconus are at a higher risk of developing the condition themselves. However, environmental factors and eye rubbing may also play a role in its development.

7. Can an optical shop detect keratoconus during an eye exam?
While optical shops can perform basic vision tests and refraction assessments, they may not have the specialized equipment necessary to diagnose keratoconus definitively. A comprehensive eye examination, including corneal topography or pachymetry, is typically conducted by an eye care professional (optometrist or ophthalmologist) to diagnose keratoconus accurately. If you suspect keratoconus or have concerns about your vision, it is advisable to seek an evaluation from an eye care specialist.

In conclusion, understanding astigmatism and its related conditions is crucial for maintaining eye health. If you have concerns about your vision or symptoms, consulting with an eye care professional is the best course of action. They can provide personalized recommendations and treatment options tailored to your specific needs.

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