The macula is the central part of the retina. This is the only part of the retina that sees color and fine detail. If this section of your eye ages too soon and wears our your central vision will be affected. Macular degeneration leads to blurred, blacked out and distorted central vision at first, especially for close up reding vision. As a result of macular degeneration clients notice a reduction in reading vision before they notice a reduction in distance vision.
There are various types of macular change, the best know versions are ‘dry’ and ‘wet’ macular change. One way to differentiate between wet and dry macular changes is to use an OCT. This type of eye camera takes a painless cross section of the macula and shows the internal structures well.
With dry macular change one is more likely to notice blurred vision and later missing patches in the central vision. The back of your eye will show yellow spots, drusen, and sometimes pigment spots. Dry macular change is usually slow in progression.
With wet macular change one is more likely to notice distortion of straight lines and letters not being in a line any more. The back of your eye will show swelling and possibly some spots of blood too. Wet macular change can occur when some one has gradually developped dry macular change at first. Wet macular change is more rapid than dry macular change.
If you notice a change in your vision, especially the central vision you will need to have this checked out as soon as possible, certainly within weeks. see here for further information on macular change.