Is Your Old Glasses Prescription Enough for Increased Astigmatism?

What is the degree?

Hello, doctor.
If my astigmatism increases from 50 degrees to 75 degrees, is it sufficient to continue wearing my old glasses with a prescription for 50 degrees? Will not having the correct prescription of 75 degrees worsen my astigmatism? Thank you, doctor.

Niming, 20~29 year old female. Ask Date: 2022/05/27

Dr. Cai Wenyuan reply Ophthalmology

It should be fine.

Reply Date: 2022/05/27

More Info

When it comes to astigmatism, even a small increase in the degree of astigmatism can significantly affect your vision. In your case, if your astigmatism has increased from 50 degrees to 75 degrees, continuing to wear your old glasses that are prescribed for 50 degrees may not provide you with optimal vision.
Astigmatism occurs when the cornea (the clear front surface of the eye) is irregularly shaped, causing blurred or distorted vision. The prescription for astigmatism is measured in diopters, and it is essential to have an accurate prescription to ensure that your vision is corrected properly. Wearing glasses that do not match your current prescription can lead to several issues:
1. Visual Discomfort: Wearing glasses that do not correct your current level of astigmatism can cause visual discomfort, including headaches, eye strain, and fatigue. This is because your eyes are working harder to focus, which can lead to discomfort over time.

2. Blurred Vision: If your glasses are not correcting your astigmatism adequately, you may experience blurred or distorted vision, especially at certain distances. This can affect your daily activities, such as reading, driving, or using a computer.

3. Potential for Worsening Symptoms: While wearing an outdated prescription does not directly cause your astigmatism to worsen, it can lead to increased eye strain and discomfort, which may make you more aware of your symptoms. In some cases, if your eyes are constantly straining to see clearly, it may contribute to a perception that your vision is deteriorating.

4. Impact on Quality of Life: Poor vision can significantly impact your quality of life. If you are unable to see clearly, it can affect your ability to perform tasks, enjoy activities, and maintain safety, especially when driving or engaging in sports.

In summary, it is advisable to update your glasses prescription to match your current level of astigmatism. A prescription for 75 degrees will provide you with the necessary correction to see clearly and comfortably. If you have not had an eye exam recently, it would be beneficial to schedule one with an eye care professional. They can assess your vision, provide an updated prescription, and discuss any other concerns you may have regarding your eye health.

Additionally, regular eye exams are crucial, especially if you notice changes in your vision. Astigmatism can be associated with other eye conditions, and keeping your prescription up to date is an essential part of maintaining good eye health. If you have any further questions or concerns, do not hesitate to reach out to your eye care provider. They are there to help you navigate your vision needs and ensure you have the best possible visual experience.

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