Eye Fatigue: Symptoms, Causes, and Solutions

Eye fatigue

Previously, I noticed that my eyes would sometimes flicker when looking at things, so I visited an ophthalmologist who said there was no issue, just eye fatigue.
However, the next day, I felt that sometimes the light would dim, and even with my eyes closed, I would perceive it as darker or brighter.
Occasionally, when looking at things, it seems to go black for a second.
Is this also related to eye fatigue? Additionally, I feel that my eyes have been very dry lately, and I was previously diagnosed with floaters.
What can I do to improve this? I currently use my phone and computer very little, but I still don't feel much improvement.

Yu, 20~29 year old female. Ask Date: 2020/02/15

Dr. He Jianxian reply Ophthalmology

If you experience eye fatigue or dryness that does not improve with lifestyle adjustments, you may consider using artificial tears.
However, if you notice a momentary blackout when looking at things, similar to turning off a light bulb, you should be very cautious, as this could indicate a blood clot.
Please confirm your symptoms, and if you truly experience the symptoms I described, it is essential to go to the hospital for a thorough examination.

Reply Date: 2020/02/15

More Info

Eye fatigue, also known as asthenopia, is a common condition that can manifest through various symptoms, including discomfort, dryness, blurred vision, and even visual disturbances such as flashes of light or changes in brightness. Based on your description, it seems that you are experiencing several symptoms that could indeed be related to eye fatigue, as well as possibly other underlying issues.

Symptoms of Eye Fatigue
1. Visual Disturbances: The sensation of seeing flashes or experiencing temporary darkness can be linked to eye fatigue. This may occur due to the strain on the eye muscles, particularly the ciliary muscles that help in focusing. When these muscles are overworked, they can lead to temporary visual disturbances.

2. Dryness: The feeling of dryness in your eyes is another common symptom of eye fatigue. When we focus on tasks, such as reading or using screens, we tend to blink less frequently, which can lead to dry eyes. This dryness can exacerbate feelings of discomfort and fatigue.

3. Fluctuating Vision: The changes in brightness or the sensation of seeing things go dark for a moment could also be attributed to fatigue. This can happen when the eye's ability to adjust to different lighting conditions is compromised due to overexertion.

4. Floaters: You mentioned having been diagnosed with floaters (or "muscae volitantes"). While floaters are generally benign, they can become more noticeable when the eyes are fatigued or strained.

Causes of Eye Fatigue
Eye fatigue can be caused by several factors, including:
- Extended Screen Time: Even though you mentioned reducing your screen time, prolonged exposure to screens can still contribute to eye strain.

- Poor Lighting: Working or reading in inadequate lighting can force your eyes to work harder, leading to fatigue.

- Incorrect Prescription: If your glasses or contact lenses are not correctly prescribed, this can cause your eyes to strain as they attempt to focus.

- Underlying Conditions: Conditions such as dry eye syndrome or uncorrected refractive errors can also contribute to eye fatigue.

Solutions and Management
1. Regular Breaks: Implement the 20-20-20 rule: every 20 minutes, look at something 20 feet away for at least 20 seconds. This helps relax the eye muscles.

2. Proper Lighting: Ensure that your reading or working area is well-lit to reduce strain. Avoid glare from screens by adjusting the brightness and using anti-glare filters if necessary.

3. Stay Hydrated: Drink plenty of water to help maintain moisture levels in your eyes. Consider using artificial tears to alleviate dryness.

4. Eye Exercises: Simple eye exercises can help relieve strain. For example, rolling your eyes or focusing on a near object and then a far object can help.

5. Consult an Eye Care Professional: Since you have already seen an eye doctor, it may be beneficial to follow up if symptoms persist. They can reassess your prescription and check for any underlying conditions that may be contributing to your symptoms.

6. Manage Floaters: While floaters are usually harmless, if they become bothersome or increase in number, it's essential to discuss this with your eye doctor.

In conclusion, while your symptoms may be indicative of eye fatigue, it is crucial to monitor them closely and consult with an eye care professional for a comprehensive evaluation. They can provide tailored advice and treatment options to help alleviate your discomfort and improve your overall eye health.

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