Nighttime Blurry Vision: Causes and Solutions

Q: Nighttime Blurry Vision: Causes and Solutions

Hello： If your left eye becomes blurry at night but not during the day, there could be several possible reasons that require further evaluation. <br>Here are some potential factors： <br>1. <br>Lighting conditions： The lighting at night may be relatively dim, which can affect some

Blurred vision

In the evening, my left eye becomes blurry when looking at things, for example, from 7 PM to 9 PM.
It improves a bit with rest, but as soon as I look at my phone, work on reports, or read, it quickly becomes blurry again.
This issue does not occur during the day.

Xiao Liu, 20~29 year old female. Ask Date: 2023/10/26

Dr. Gao Pilin reply Ophthalmology

Hello: If your left eye becomes blurry at night but not during the day, there could be several possible reasons that require further evaluation.
Here are some potential factors:
1.
Lighting conditions: The lighting at night may be relatively dim, which can affect some people's vision, especially when reading or using electronic devices.
Ensuring that your reading environment is adequately lit may help alleviate the blurriness.
2.
Astigmatism or myopia: If you have existing myopia or astigmatism, these conditions may become more pronounced under certain circumstances, such as in low light.
3.
Eye strain: Prolonged use of electronic devices or reading can lead to eye strain, which may manifest as blurry or unclear vision.
Taking regular breaks, looking away periodically, and performing eye exercises can help relieve this issue.
4.
Other eye conditions: Blurred vision may also be caused by other eye problems, such as dry eye syndrome, retinal issues, or other ocular diseases.
If this problem persists, it is advisable to see an ophthalmologist for an examination to determine if there are any underlying eye health concerns.

Reply Date: 2023/10/26

More Info

Nighttime blurry vision, particularly when it occurs in one eye, can be a frustrating and concerning experience. Based on the information provided, there are several potential causes and solutions to consider.

Causes of Nighttime Blurry Vision
1. Eye Fatigue: One of the most common reasons for blurry vision at night is eye fatigue. This can occur even if you haven't been using screens extensively during the day. The eyes can become fatigued from various activities, including reading, studying, or even prolonged exposure to bright lights. The symptoms may be exacerbated in low-light conditions, as the eyes have to work harder to focus.

2. Refractive Errors: If there is a significant difference in refractive error (such as nearsightedness or astigmatism) between your two eyes, it can lead to blurry vision in one eye, especially in dim lighting. This is because the eye with the higher refractive error may struggle to focus properly in low light.

3. Dry Eyes: Dryness can be more pronounced at night, leading to temporary blurry vision. This can happen due to environmental factors, prolonged screen time, or even certain medications. Artificial tears can help alleviate this issue, but if they are not effective, further evaluation may be necessary.

4. Night Myopia: Some individuals experience a condition known as night myopia, where their vision worsens in low-light conditions. This can be due to the way the eye's lens adjusts to different lighting, causing difficulty in focusing.

5. Underlying Conditions: Conditions such as cataracts, retinal issues, or even early signs of more serious eye diseases can manifest as blurry vision at night. If the symptoms persist or worsen, it is crucial to seek further evaluation from an eye care professional.

Solutions and Recommendations
1. Regular Eye Exams: It is essential to have regular eye examinations, especially if you notice changes in your vision. An eye care professional can assess your vision and determine if there are any underlying issues that need to be addressed.

2. Proper Lighting: When engaging in activities at night, ensure that you have adequate lighting. This can help reduce eye strain and improve your ability to see clearly.

3. Take Breaks: If you are using screens or reading for extended periods, take regular breaks to rest your eyes. The 20-20-20 rule is a helpful guideline: every 20 minutes, look at something 20 feet away for at least 20 seconds.

4. Use Artificial Tears: If dryness is a contributing factor, using artificial tears can help keep your eyes lubricated. However, if you find that they are not effective, consult with your eye care provider for alternative options.

5. Discuss Symptoms with Your Doctor: If your blurry vision persists, especially if it is accompanied by other symptoms such as flashes of light, floaters, or significant discomfort, it is important to discuss these with your doctor. They may recommend further testing, such as a visual field test or imaging of the retina, to rule out any serious conditions.

6. Lifestyle Adjustments: Ensure you are getting enough sleep and managing stress, as both can impact eye health. Additionally, a diet rich in antioxidants and omega-3 fatty acids can support overall eye health.

In conclusion, while nighttime blurry vision can often be attributed to fatigue or temporary conditions, it is essential to monitor your symptoms and seek professional advice if they persist. Regular eye care and attention to your visual habits can significantly improve your nighttime vision and overall eye health.

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