Macula is the central portion of the retina. If macula deteriorates, it may damage the retina (the light-sensing nerve tissue), leading to severe vision loss. Macular degeneration is common among older people. Older adults (age 60+) are more prone to macular degeneration.
Macular degeneration is often characterized by: drusen or abnormal blood vessels (called choroidal neovascularization). These drusen or abnormal blood vessels, can lead to atrophy or tissue death, causing dimming or distorting vision.
Macular degeneration is mostly age-related, but it may also be hereditary. Smoking is another risk factor. Regular eye exam can help detect macular degeneration.