During routine eye check-ups, it is common for older patients to complain of dark shadows in the centre of their vision. Most of them put it down to the ageing process and are prepared to accept it as a fact of life. But the fact is that these symptoms may be early signs of age-related macular degeneration (AMD). Perhaps you have just learned that you or a loved one has the condition. But many people haven't even heard of AMD and don't understand exactly what is going on inside their eyes.