What Is Macular Edema? Macular edema is swelling or thickening of the eye's macula, the part of your eye responsible for detailed, central vision. The macula is a very small area at the center of the retinaâa thin layer of light-sensitive tissue that lines the back of the eye.
What is perception? The process by which individuals select, organize, and interpret the input from their senses (vision, hearing, touch, smell, and taste) to give meaning and order to their environment. Through perception, people try to make sense of their environment and the objects.
Visual perception occurs in two ways. One way is called top-down processing. This theory of perception says that we use our own knowledge and expectations to influence what we see. We draw on our whole understanding of a concept in order to make sense of the individual components.