What is a central scotoma?

Blind Spot: Imagine staring at a white paper exactly 10 inches on each side. Now imagine you cut a small hole in the center of the paper and place the white page over a black one. Now imagine that everything you look at contains a missing central area. That is a central scotoma. Any disorder that can affect the retina can be associated ranging from age related macular disease and hyprtension to drugs etc.

Field loss centrally: This is a sort of "hole" in the field of vision involving the receptors in the center of the retina which can be lost from various conditions such as macular degeneration, bleeding, diabetes, laser exposure and other sorts of trauma or disease.