Black Shadows in Vision: Causes and Concerns - Ophthalmology

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Hello! Thank you for your question regarding the visual disturbances you're experiencing, specifically the black shadows and spots in your vision. Based on your description, it seems that you are dealing with a few interconnected issues that can be quite common among individuals with high myopia (nearsightedness) and astigmatism.

Firstly, the presence of black spots or shadows in your vision, particularly in the context of myopia, could be related to a condition known as "floaters." Floaters are tiny clumps of gel or cells that form in the vitreous humor, the clear gel-like substance that fills the eye. As we age, the vitreous can become more liquid, and these clumps can cast shadows on the retina, which is perceived as black spots or shadows in your field of vision. This phenomenon is generally benign, especially if you have had a thorough eye examination that ruled out any serious underlying conditions.

The fact that you noticed these black spots in the upper left corner of your left eye for two days and that they have persisted is worth monitoring. If they suddenly increase in number or if you experience flashes of light, it is crucial to seek immediate medical attention, as these could be signs of retinal detachment or other serious conditions.

Regarding the faint black shadow that appears when you jump, this could be related to changes in intraocular pressure or the movement of the vitreous gel within your eye. When you jump, the sudden movement can cause the vitreous to shift, potentially leading to temporary visual disturbances. This is often harmless, but it is essential to keep an eye on it. If the shadow persists or worsens, it would be wise to consult with your eye care professional again.

Your high degree of myopia and astigmatism can also contribute to visual disturbances. High myopia can lead to structural changes in the eye, including thinning of the retina and changes in the vitreous, which may increase the likelihood of experiencing floaters or shadows. Astigmatism, on the other hand, can cause blurred or distorted vision, which might make you more aware of any transient visual phenomena.

In summary, while the symptoms you describe may be related to benign conditions such as floaters or the effects of high myopia, it is essential to remain vigilant. Regular eye examinations are crucial, especially given your history of high myopia. If you notice any changes in your vision, such as an increase in the number of floaters, flashes of light, or any other unusual symptoms, do not hesitate to seek immediate medical advice. Your eye health is paramount, and early detection of any potential issues can significantly impact your long-term vision.
Remember to take breaks when using screens, maintain a healthy lifestyle, and stay hydrated, as these factors can also contribute to overall eye health. If you have any further questions or concerns, please feel free to reach out to your eye care provider for personalized advice and care.