Old-timers will recall a time when a cataract operation used to be major surgery requiring hospital stays and month-long recovery times. Today it is an outpatient procedure that takes a matter of minutes; the patient is back home in a few hours and is able to resume normal activities. The point is that medical marvels have come a long way in recent times. What we used to think of as being in the realm of science fiction is a reality today.
Source: http://www.thestorypedia.com/news/faceoff-in-real-life-when-scifi-became-fact