Black Spots Or Black Shadows That Appear To Hover In The Eyes?
Black spots or black shadows that appear to hover and follow visual movements are commonly referred to as floaters. Floaters are formed from proteins in the eyeball that are clumped, so they are formed like deposits or fine threads that give rise to shadows when light enters the eye. Black shadows appear more clearly when we see a bright color background (like white). Floaters generally occur as you age, often occurs in people with nearsightedness, or if there are conditions such as inflammation of the back side of the eyeball, bleeding in the eyeball, retinal tears, etc.
We recommend that you check your eyes to an ophthalmologist. Examination is done from the front of the eye, to make sure first there are no foreign objects (such as coal powder) that stick to the cornea and obstruct vision. Inspection will be carried out to the back of the eye to see abnormalities that occur. You have to be alert when black spots / shadows appear more and more, arising sensations such as seeing lightning / camera flash, loss of vision at the edges (side of vision only see black), immediately check with an eye doctor. Floaters will continue to exist (not absorbed by the body and the like), can multiply if there is a cause of the disease that continues to run and is not treated. Can also be a fixed amount.
When working in a mining area, you should use appropriate personal protective equipment. Use goggles / protective glasses if needed. If you feel the eyes have conceded powder / small foreign matter, use eye wash faucets if available or rinse with clean running water for at least 15 minutes. Then quickly seek medical help.
Thus the explanation from me, may be useful.