Eye Strain and Flashing Lights: Causes and Solutions - Ophthalmology

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My eyes feel strange?


Hello doctor, I have approximately 200 degrees of astigmatism in both eyes.
Recently, I've been experiencing occasional flashes of light when I open my eyes, which I wonder if it might be due to sensitivity.
Additionally, I've noticed that when looking at close objects, like my phone, my eyes feel a bit strained and it seems difficult to focus.
What could this situation be, and how can I improve it?

Mary, 20~29 year old female. Ask Date: 2021/08/01

Dr. Gao Pilin reply Ophthalmology


Hello Mary: Eye fatigue or refractive issues can cause such symptoms.
I recommend that you visit an ophthalmologist for an eye examination.
Strabismus can also lead to difficulty focusing, so it is important to get checked.
Online answers can only serve as a reference; if necessary, you should seek medical attention at a healthcare facility.
Best regards, Gao Pilin.

Reply Date: 2021/08/01

More Info


Flashing lights in the eyes and difficulty focusing on nearby objects can be concerning symptoms that warrant further investigation. Based on your description, it seems you are experiencing a combination of visual disturbances, including flashes of light and eye strain, particularly when looking at close objects like your phone. Let's delve into the potential causes and solutions for these symptoms.


Causes of Flashing Lights and Eye Strain
1. Vitreous Detachment: As we age, the vitreous gel inside the eye can shrink and pull away from the retina, leading to flashes of light. This is often harmless but can sometimes indicate more serious conditions like retinal tears or detachment.

2. Migraine Auras: Even if you do not have a history of migraines, some individuals experience visual disturbances known as auras, which can include flashing lights or zigzag patterns. These can occur without the headache that typically accompanies migraines.

3. Dry Eye Syndrome: Insufficient tear production can lead to dry eyes, which may cause discomfort and visual disturbances. Symptoms can worsen when focusing on screens for extended periods.

4. Eye Strain (Asthenopia): Prolonged use of digital devices can lead to eye strain, characterized by symptoms such as difficulty focusing, discomfort, and visual disturbances. This is often exacerbated by poor lighting, improper screen distance, or uncorrected vision problems.

5. Refractive Errors: If you have uncorrected refractive errors (like myopia or hyperopia), it can lead to difficulty focusing on near objects, causing strain and discomfort.

6. Retinal Issues: While less common, flashing lights can indicate more serious retinal conditions. If you experience persistent flashes, especially if accompanied by other symptoms like a curtain-like shadow in your vision, it is crucial to seek immediate medical attention.


Solutions and Recommendations
1. Eye Examination: It is essential to have a comprehensive eye exam with an eye care professional. They can assess your symptoms, check for any underlying conditions, and determine if your flashes are related to vitreous detachment or other issues.

2. Manage Screen Time: To alleviate eye strain, follow the 20-20-20 rule: every 20 minutes, take a 20-second break and look at something 20 feet away. This helps reduce fatigue and allows your eyes to refocus.

3. Proper Lighting: Ensure that your workspace is well-lit to reduce glare on screens. Avoid using devices in dim lighting, as this can exacerbate eye strain.

4. Use Artificial Tears: If dry eyes are a concern, consider using over-the-counter artificial tears to keep your eyes lubricated and comfortable.

5. Adjust Screen Settings: Increase text size and contrast on your devices to make reading easier. Consider using blue light filters or glasses designed to reduce digital eye strain.

6. Corrective Lenses: If you have refractive errors, wearing the appropriate prescription glasses or contact lenses can significantly improve your ability to focus on near objects and reduce strain.

7. Regular Breaks: Incorporate regular breaks into your routine to give your eyes a chance to rest, especially during prolonged periods of screen use.

8. Healthy Lifestyle: Maintain a balanced diet rich in omega-3 fatty acids, vitamins A, C, and E, and stay hydrated to support overall eye health.


Conclusion
While occasional flashes of light and difficulty focusing can be benign, it is crucial to monitor your symptoms and consult with an eye care professional for a thorough evaluation. They can provide personalized recommendations based on your specific situation and help you manage any underlying conditions effectively. Taking proactive steps to reduce eye strain and maintain eye health can significantly improve your visual comfort and overall quality of life.

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