Macular pucker happens when a thin film of transparent tissue forms on the surface of the retina, wrinkling and distorting the normally smooth retinal architecture in the macular center. The retina is a very delicate layer of nerve tissue that lines the inside wall of the eye and functions much like the film inside a camera. The retina transmits images back to the vision center of the brain. For images to be in focus, the retina must be smooth and compact. In cases of macular pucker, vision is wavy and blurry due to the presence of this layer of extra tissue on the retinal surface.