Had a eye test and eyes seem fine but I keep seeing a black dot in my vision and even when I close my eyes. It stays on one position then goes?

Vitreous floater. It sounds like you have vitreous floaters, little grayish spots of differing shapes in the vitreous cavity of your eye. These increase with aging, myopia, lattice degeneration, and can arise from retinal tears, inflammation, trauma, surgery. The dilated eye examination is important to rule out serious causes that need treatment. As long as this has been done, just monitor for change. .