They are more noticeable when you are looking at a bright or plain background, which is why people notice them more when looking at a blank surface or at the sky.

Causes of Spots or floaters

Spots are often triggered by tiny specks of protein or other matter that come to be entrapped when your eyes developed before birth. They can also emerge as the vitreous fluid fades caused by aging. Specific eye diseases or injuries can bring about the emergence of spots.