Dry AMD is more common than wet AMD. With this condition, the macula gets thinner with age. The light-sensitive cells in the macula get thinner and eventually die. In later stages, patients might lose central vision.
Wet AMD causes faster vision loss but is less common. About 10% of people with macular degeneration get the wet form. In this condition, the blood vessels underneath the macula leak blood and fluid into the retina. This causes damage which leads to permanent loss of central vision.
Most people with macular degeneration have the dry form comparatively. However, the dry form can turn into to the wet form at any stage.