Floaters and Flashing Lights in Your Vision - Ophthalmology

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Hello! Thank you for your questions regarding floaters and flashing lights in your vision. It’s important to understand that these symptoms can be quite common, especially among individuals with myopia (nearsightedness) and other refractive errors.
Floaters, or "myodesopsia," are small specks or strands that drift through your field of vision. They are typically caused by changes in the vitreous humor, the gel-like substance that fills the eye. As we age, the vitreous can become more liquid and may pull away from the retina, leading to the perception of floaters. In your case, having had floaters for over a year is not unusual, especially since you have myopia, which can increase the likelihood of vitreous changes.

The colored spots you see may be related to the same phenomenon. When light enters the eye, it can cast shadows on the retina from these floaters, which can appear as small dots or flashes of light. This is particularly noticeable in low-light conditions, where the contrast between the floaters and the background is more pronounced.
Regarding your observation of seeing more floaters when squinting or looking at the sky, this can also be normal. Squinting changes the shape of your eye slightly and can alter how light enters, potentially making floaters more noticeable. Additionally, looking at a bright, uniform surface like the sky can make floaters stand out more against the blue background.

Flashing lights, or photopsia, can occur when the vitreous pulls on the retina, causing it to send signals to the brain that are interpreted as light. This can happen during episodes of vitreous detachment, which is common in individuals with myopia. If you experience flashes of light that are persistent or accompanied by a sudden increase in floaters, it is essential to seek medical attention, as these could be signs of retinal detachment, which is a serious condition.

In your case, since you have a history of floaters and are noticing changes, it would be prudent to have regular eye examinations. An eye care professional can perform a thorough examination, including a dilated fundus exam, to assess the health of your retina and vitreous. They can also determine if any further action is necessary.

As for your concern about whether these symptoms can disappear, floaters may not completely go away, but many people find that they become less noticeable over time as the brain learns to ignore them. Unfortunately, there is no specific treatment to eliminate floaters, but in some cases, if they significantly impair vision, a procedure called vitrectomy can be considered, although it carries its own risks.

In conclusion, while your symptoms are likely related to the natural aging process of the eye and the effects of myopia, it is essential to monitor any changes closely. If you notice a sudden increase in floaters, new flashes of light, or any changes in your vision, please consult an eye care professional promptly. Regular check-ups will help ensure that your eyes remain healthy and that any potential issues are addressed early.