Ptosis is a medical condition characterized by the drooping or sagging of one or both eyelids. This can occur due to various factors, including muscle weakness, nerve damage, or age-related changes. In some cases, it may affect vision by obstructing the field of sight. The condition can be congenital, meaning a person is born with it, or acquired later in life. Treatment options vary depending on the severity and underlying cause, ranging from observation to surgical procedures aimed at lifting the eyelid and restoring normal function.