Vision Changes: Questions About Floaters and Eye Health - Ophthalmology

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Hello! Thank you for your detailed questions regarding your vision changes and eye health. Given your history of high myopia and the presence of floaters, it's understandable to have concerns about any new visual phenomena you are experiencing. Let's address your questions one by one.

1. Flashing Black Dots: The phenomenon of seeing flashing black dots that disappear after a few seconds is often related to the vitreous gel in the eye. As we age or due to conditions like high myopia, the vitreous can become more liquid and may pull away from the retina, leading to sensations such as flashes or floaters. These flashes are typically harmless, but they can indicate that the vitreous is tugging on the retina. If you experience a sudden increase in flashes or floaters, or if you see a curtain-like shadow in your vision, it’s crucial to seek immediate medical attention as these could be signs of retinal detachment. In most cases, these symptoms may improve over time as your brain adapts to the changes in your visual field.

2. Geometric Patterns and Visual Disturbances: The experience of seeing geometric patterns, waves, or halos when your eyes are closed can be attributed to a phenomenon known as phosphenes, which are visual sensations that occur without light entering the eye. These can be caused by pressure on the eyes, changes in the vitreous, or even neurological factors. While these experiences can be disconcerting, they are generally not a cause for concern unless accompanied by significant vision loss or other alarming symptoms. If the patterns persist or worsen, it would be wise to consult with an eye care professional for a thorough evaluation.

3. Engaging in Water Activities: Regarding your ability to participate in activities like snorkeling or diving, it is generally safe for individuals with high myopia and floaters, provided there are no other underlying retinal issues. However, it’s essential to take precautions. Ensure that you are comfortable with your vision while in the water, and consider wearing protective eyewear if necessary. Additionally, avoid activities that could lead to trauma to the eyes, as high myopia can increase the risk of retinal issues. Always consult with your eye doctor before engaging in such activities, especially if you have experienced any recent changes in your vision.

In summary, while the symptoms you describe can be concerning, they are often related to the natural aging process of the eye, particularly in individuals with high myopia. Regular check-ups with your eye care provider are essential to monitor any changes and ensure that your retinal health remains stable. If you notice any sudden changes in your vision or experience new symptoms, do not hesitate to seek immediate medical attention. Your eye health is paramount, and staying informed about your condition will help you manage it effectively. Thank you for reaching out, and I hope this information helps clarify your concerns!