The macula is located at the back of the eye. It is a small area of about 1mm in diameter from which we get our sharpest vision. In the macula there is a concentration of cone cells. These cells are responsible for color vision, sharp visual acuity and central vision. There are 6-7 million cone cells in the retina, the highest concentration of which is in the fovea, a tiny area in the center of the macula.
For more information, read about macular support.