Black spots in your vision are usually caused by floating debris in your eye's vitreous gel or retinal issues. These spots, often called floaters, appear as small dark shapes that drift across your field of view.
The vitreous humor, a gel-like substance filling your eye, shrinks and becomes somewhat stringy as you age. These strands cast tiny shadows on your retina, appearing as floaters. They move with your eye movements and seem to drift away when you try to focus on them.
Black spots in vision typically fall into two categories:
A study published in the Journal of Ophthalmology found that 68% of people experience floaters by age 70.
Most floaters are harmless, but sudden changes or an increase in their number can signal retinal detachment or other serious conditions. Seek immediate medical attention if you notice:
Retinal detachment is a medical emergency requiring prompt treatment to prevent vision loss.
Many people confuse floaters with dry eye or cataracts. While these conditions can cause vision disturbances, they don't produce the drifting dark spots characteristic of floaters. Dry eye causes a gritty sensation and redness, while cataracts create a cloudy or blurry vision.
I once noticed a sudden increase in floaters in my left eye. Though initially concerned, a visit to my ophthalmologist confirmed it was due to age-related vitreous changes. The doctor assured me it was common and not dangerous.
While you can't prevent floaters entirely, maintaining good eye health can help. Regular eye exams, wearing sunglasses, and eating a balanced diet rich in vitamins A, C, and E support eye health. If floaters become bothersome, a procedure called vitrectomy can remove the vitreous gel, though this is rarely necessary.