It is a disease that presents a series of visual symptoms that can be detected. Straight lines may appear bent, distance estimates may be altered, and there may be increased sensitivity to light.
In an initial phase there may be blurred vision in the central part of the field of vision, and in more advanced stages may be accompanied by a black spot, being able to increase in size the longer the pathology evolves.
The disease usually starts in one eye, but eventually ends up affecting both. Reason why the patient is not aware of the visual problem until he has reached an advanced development of macular degeneration.