They consist of rods and cones , which also perceive color. The macula is supplied with oxygen-rich blood that nourishes the cells. If the macula is intact, we see the fine details of whatever is directly in front of us. Macular degeneration involves the deterioration or breakdown of this tiny structure. Central vision becomes blurred or disappears.
Straight lines look wavy or broken.
We see the edges of images, but not what is in the middle. In time, the sense of color is diminished because the cones are damaged. The patient does not experience total blindness and there is always a ring of peripheral vision.