Why Do My Eyes Feel Strained Even with Corrective Glasses? - Ophthalmology

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Wearing glasses can cause eye strain?


Hello, doctor.
Initially, I had some difficulty seeing clearly while wearing glasses, and my eyes felt a bit strained, so I went to get new lenses.
The examination revealed that I had over 50 degrees of astigmatism in both eyes, and my right eye's prescription increased by 25 degrees.
However, after wearing the glasses for a few days, I noticed that while my vision was clearer, my eyes still felt noticeably strained.
In fact, my eyes felt more comfortable when I wasn't wearing the glasses.
I returned to the optical shop several times for adjustments, but the prescription checks showed no issues.
Should I go directly to the hospital for an eye examination?

Nianqingren, 20~29 year old female. Ask Date: 2017/04/15

Dr. Gao Pilin reply Ophthalmology


Hello young person: If myopia and astigmatism are overcorrected, the eyes can become more easily fatigued.
It is recommended that you visit an ophthalmologist for an examination, and if necessary, undergo dilation for a more accurate refraction.
The ophthalmology department at Puzi Hospital in Taiwan is open Monday to Friday from 8:00 AM to 12:00 PM and Wednesday afternoons from 1:00 PM to 4:30 PM.
Online responses can only serve as a reference; it is essential to seek medical care at a healthcare facility if needed.
I hope to have the opportunity to assist you.
Gao Pi-Lin

Reply Date: 2017/04/15

More Info


Experiencing eye strain even when wearing corrective glasses can be frustrating and concerning. There are several potential reasons for this phenomenon, and understanding them can help you determine the best course of action.

Firstly, it’s important to recognize that even with the correct prescription, various factors can contribute to eye strain. One common issue is the adaptation period. When you receive a new pair of glasses or a new prescription, your eyes may need time to adjust to the changes in lens curvature and prescription strength. This adjustment period can sometimes lead to discomfort, including feelings of strain or fatigue, especially if the prescription has changed significantly.

Another factor to consider is the quality of the lenses themselves. If the lenses are not made from high-quality materials or if they have imperfections, such as scratches or distortions, this can lead to visual discomfort. Additionally, if the lenses are not properly aligned with your eyes (for example, if the optical center of the lenses does not match your pupils), this misalignment can cause strain as your eyes work harder to focus.

Furthermore, the type of lens you have can also play a role. For instance, if you have a high prescription, the lenses may be thicker and heavier, which can contribute to discomfort. Additionally, if you are using single vision lenses for both distance and near vision tasks, this can lead to strain, especially during prolonged periods of reading or using digital devices. Progressive lenses or bifocals may be more suitable for individuals who frequently switch between different focal lengths.

Another important aspect to consider is the overall health of your eyes. Conditions such as dry eye syndrome can exacerbate feelings of strain, especially when wearing corrective lenses. If your eyes are not adequately lubricated, wearing glasses can feel uncomfortable. It’s also worth noting that if you have underlying conditions such as astigmatism, even a slight miscalculation in your prescription can lead to visual disturbances and discomfort.

Additionally, environmental factors can contribute to eye strain. Prolonged exposure to screens, poor lighting conditions, and glare can all lead to discomfort, regardless of whether you are wearing corrective lenses. The 20-20-20 rule is a helpful guideline to alleviate eye strain: every 20 minutes, take a 20-second break to look at something 20 feet away.

Given your symptoms and the adjustments you've made to your glasses, it would be wise to consult with an eye care professional. An eye exam can help determine if there are any underlying issues that need to be addressed, such as dry eye, improper lens fitting, or other refractive errors. If necessary, your eye doctor may recommend additional tests, such as a tear film assessment or a more detailed examination of your eye health.

In summary, while it’s common to experience some discomfort when adjusting to new glasses, persistent eye strain warrants further investigation. Factors such as lens quality, prescription accuracy, eye health, and environmental influences all play a role in your visual comfort. Seeking a comprehensive eye examination will provide you with the best insights and solutions to alleviate your symptoms and ensure your eye health is maintained.

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