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This is a normal change as the eye ages. The vitreous “jelly” in the back of the eye pulls forward from the retina and the resulting floater (vitreous strands) casts a shadow that you are seeing. They tend to get better with time due to 2 factors: 1. Sometimes they move more anterior (further from the retina) causing less shadows 2. Neuroadaption (your brain gets used to it).
Always call your doctor if the floaters worsen, if you start to see flashing lights, or if you develop a dark spot in your peripheral vision.
These can sometimes be treated with a laser or with a surgery called a vitrectomy. The laser can work well in certain patients, but is far from a definitive cure. The vitrectomy is completely curative, but carries more risk and is generally frowned upon by most surgeons except in certain instances.
Luckily, most people adapt to them very well, and we just observe them for changes.
Hope this helps.
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