Marfan syndrome is an inheritable medical condition that degrades the tissues that give strength, flexibility, and integrity to structures and organs of the body (connective tissue) in the body. Its effect is seen greatly in the cardiac eyes, bones, ligaments, muscles, and blood vessels. These connective tissues can be seen almost everywhere in the body. Therefore Marfan syndrome can affect many systems, causing abnormalities to these structures. Marfan syndrome is very rare, occurring in 1 in 5,000 people.
Vision problems resulting from abnormal placing of the lens in one or both eyes and defective changes in big blood vessels (Aorta) that send blood from the heart to the other parts of the body are the two main characteristics of Marfan syndrome. The large blood vessel becomes weak and expands, leading to inflammation of the Aorta (aortitis), aortic aneurysm is life-threatening. 
Marfan syndrome is observed in various ways. Its signs and symptoms vary from one person to another, and the severity also affects the expressed symptoms. These symptoms get complicated as patients age, and they could be non-fatal or fatal.