Eye Symptoms: White Light in the Corner After Phone Use - Ophthalmology

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The symptoms you're experiencing, particularly the appearance of white or shimmering light in the corner of your left eye after prolonged smartphone use, can be concerning, especially given your history of high myopia (over 700 degrees), astigmatism, presbyopia, and floaters. While I cannot diagnose your condition, I can provide some insights into what might be happening and what steps you should consider taking.

Firstly, the phenomenon of seeing white or shimmering light, especially after extended screen time, could be related to several factors. One possibility is that it may be a result of visual fatigue or digital eye strain, which is increasingly common in our technology-driven world. Symptoms of digital eye strain can include dryness, irritation, blurred vision, and even visual disturbances like the ones you described. The blue light emitted from screens can also contribute to discomfort and visual disturbances, particularly when used in low-light conditions.

Another potential explanation for the white light you see could be related to the vitreous gel in your eye. Given your history of floaters, it's possible that the vitreous is pulling slightly on the retina, especially with eye movements or changes in focus. This can sometimes create visual disturbances, including flashes of light or shimmering effects. However, since you mentioned that this phenomenon occurs specifically after using your phone, it may be more closely related to eye strain or fatigue rather than a serious retinal issue.

It's also worth noting that your high degree of myopia puts you at a greater risk for certain eye conditions, such as retinal detachment or tears, which can present with symptoms like flashes of light or new floaters. Therefore, it’s essential to monitor your symptoms closely.

When you visit an eye care professional, there are several tests and examinations that they may perform to assess your eye health:
1. Comprehensive Eye Exam: This will include checking your visual acuity, refraction (to determine your prescription), and an assessment of your eye health.

2. Dilated Fundus Examination: This involves using eye drops to dilate your pupils, allowing the doctor to examine the retina and vitreous for any signs of detachment, tears, or other abnormalities.

3. Visual Field Testing: This can help determine if there are any blind spots or areas of reduced vision that could indicate retinal issues.

4. OCT (Optical Coherence Tomography): This imaging test provides detailed images of the retina and can help identify any structural changes.

5. Assessment of Eye Movements: Your eye doctor may evaluate how your eyes move and respond to different stimuli, which can help identify any issues related to eye strain or coordination.

In addition to these tests, it may be beneficial to discuss your screen time habits with your eye care provider. They may recommend strategies to reduce eye strain, such as the 20-20-20 rule (every 20 minutes, look at something 20 feet away for 20 seconds), ensuring proper lighting while using screens, and possibly using blue light blocking glasses.

In conclusion, while the symptoms you are experiencing could be related to digital eye strain or other benign factors, it is crucial to have a thorough examination to rule out any serious conditions, especially given your history of high myopia. Keeping an open line of communication with your eye care provider about your symptoms and concerns will help ensure that you receive the appropriate care and guidance.