Black Spots in Vision: Is It Normal with High Myopia? - Ophthalmology

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Experiencing black spots in your vision, especially as a person with high myopia, can be concerning. The phenomenon you describe, where you see deep black shadows that obscure your vision for a few seconds, could be related to several factors, including the presence of floaters, changes in the vitreous gel of the eye, or even transient visual disturbances.

In high myopia, the eye is elongated, which can lead to various complications, including changes in the vitreous body. The vitreous is a gel-like substance that fills the eye and helps maintain its shape. As we age or in the case of high myopia, the vitreous can undergo changes, leading to the formation of floaters—small specks or cobweb-like structures that drift across your field of vision. These floaters are generally harmless, but they can be more pronounced in individuals with high myopia.

The black spots you are experiencing could also be related to a phenomenon known as "visual snow" or "visual migraine," where transient visual disturbances occur, often accompanied by other symptoms like light sensitivity or afterimages. These disturbances can be triggered by various factors, including stress, fatigue, or even changes in lighting conditions.

It's important to note that while floaters and transient visual disturbances can be common, they can also indicate more serious conditions, particularly in individuals with high myopia. For instance, retinal tears or detachments can occur, which may present with sudden changes in vision, including the appearance of new floaters, flashes of light, or a shadow in the peripheral vision. Given your description of the deep black shadows, it is crucial to monitor these symptoms closely.

Since you recently underwent a dilated eye exam and your retina was found to be intact, this is reassuring. However, if you continue to experience these black spots or if they worsen, it is essential to follow up with your eye care provider. They may recommend further evaluation to rule out any potential complications associated with high myopia, such as retinal detachment or other retinal pathologies.

In summary, while the black spots you are experiencing may be related to benign causes such as floaters or transient visual disturbances, it is essential to remain vigilant. Regular eye examinations and open communication with your eye care provider are key to ensuring your eye health, especially given your history of high myopia. If you notice any changes in your symptoms, such as an increase in the frequency or intensity of the black spots, or if you experience flashes of light or a curtain-like shadow in your vision, seek immediate medical attention. Your vision is precious, and proactive management is vital in maintaining your eye health.