Astigmatism: Does Excessive Screen Time Affect Your Vision?

Q: Astigmatism: Does Excessive Screen Time Affect Your Vision?

Hello： The posture and angle of reading can also affect astigmatism. <br>If you look at a book or a mobile device with your eyes down but without lowering your head, it can cause pressure on the cornea, leading to astigmatism. <br>Squinting to see things can also increase astigma

Astigmatism issues?

Regarding your follow-up question from yesterday about experiencing blurred vision after prolonged use of electronic devices, you mentioned that the doctor at the clinic noted that your astigmatism has increased significantly compared to four months ago.
You are asking whether excessive eye strain can lead to an increase in astigmatism and if this increase is normal, as you found information online stating that astigmatism does not increase, which has caused you some concern.
Astigmatism can be influenced by various factors, including eye strain and fatigue.
While it is generally believed that astigmatism is a stable refractive error, changes in visual habits, such as prolonged screen time, can lead to temporary visual disturbances or exacerbate existing conditions.
However, a significant increase in astigmatism over a short period may warrant further investigation to rule out any underlying issues.
It is advisable to follow up with your eye care professional for a comprehensive evaluation and to discuss your concerns about the changes in your vision.

Niming, 20~29 year old female. Ask Date: 2021/08/05

Dr. Gao Pilin reply Ophthalmology

Hello: The posture and angle of reading can also affect astigmatism.
If you look at a book or a mobile device with your eyes down but without lowering your head, it can cause pressure on the cornea, leading to astigmatism.
Squinting to see things can also increase astigmatism.
However, if astigmatism continues to increase without any apparent reason, it is important to check for pathological conditions of the cornea, such as keratoconus.
Currently, it is advisable to minimize the use of electronic devices and allow your eyes to rest for at least a week before re-evaluating.
Online responses should only be considered as references; if necessary, it is essential to seek medical attention at a healthcare facility.
Gao Pilin

Reply Date: 2021/08/05

More Info

Excessive screen time can indeed have a significant impact on your vision, particularly if you already have pre-existing conditions like astigmatism. Astigmatism is a common refractive error caused by an irregular shape of the cornea or lens, leading to blurred or distorted vision. When you spend long hours in front of screens, your eyes can become fatigued, which may exacerbate existing vision problems, including astigmatism.

When you engage in prolonged screen time, your eyes are often focused on a fixed distance, which can lead to a condition known as digital eye strain or computer vision syndrome. Symptoms of this condition include blurred vision, dry eyes, headaches, and difficulty focusing. These symptoms can be particularly pronounced if you have astigmatism, as your eyes may struggle to maintain clarity when they are fatigued.
Regarding your concern about the increase in astigmatism noted during your eye examination, it is important to understand that while some sources may state that astigmatism itself does not increase, the symptoms associated with it can worsen due to eye strain. This means that while the underlying shape of your cornea may not have changed significantly, the way your eyes function can be affected by excessive screen time.
Increased screen time can lead to a temporary worsening of visual acuity, which may be perceived as an increase in astigmatism. This is particularly true if you are experiencing fatigue or discomfort in your eyes. It is essential to take regular breaks when using screens, following the 20-20-20 rule: every 20 minutes, look at something 20 feet away for at least 20 seconds. This practice helps to relax the eye muscles and reduce strain.

Moreover, if you notice that your vision is becoming increasingly blurry or distorted, it is crucial to consult with an eye care professional. They can provide a comprehensive eye exam to determine if there have been any changes in your prescription or if other underlying issues may be contributing to your symptoms.
In summary, while astigmatism itself may not inherently increase due to excessive screen time, the symptoms associated with it can be exacerbated by prolonged use of digital devices. It is vital to practice good eye care habits, including taking regular breaks, ensuring proper lighting, and maintaining an appropriate distance from screens. If you have concerns about your vision or changes in your prescription, do not hesitate to seek professional advice. Regular eye exams are essential for monitoring your eye health and ensuring that any changes are addressed promptly.

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