Estimates of the cost of invasive species to the United States alone are in the tens of billions of dollars yearly. Annual federal expenditures on prevention and management of invasive species are estimated to exceed $1.3 billion.
Depending on what specific conditions are. Some of the color we see when we close our eyes is light that gets thru the eye lid. It usually has a red componenet to it because of the blood veins. Sone, especially right after closing our eyes is the various elements in our visual system settling down (rods, cones, ...).
Close your eyes tightly and use the palms of your hands to apply slight pressure to your eyes.. After about 5 or 10 seconds into the massage, the normal blackness turns to white for a few seconds. When the white fades and the blackness returns, open your eyes and your vision will be better in the darkness.