  Computer Vision is considered to be one of the most important areas in
research and has focused on developing many applications that has proved to be
useful for both research and societal benefits. Today we have been witnessing
many of the road mishaps happening just because of the lack of concentration
while driving.As a part of avoiding this kind of disaster happening in day to
day life there are many technologies focusing on keeping track of the vehicle
drivers concentration.One such technology uses the method of eye blink
detection to find out the concentration level of the driver.With the advent of
many high end camera devices with cost effectiveness factor today it has become
more efficient and cheaper to use eye blink detection for keeping track of the
concentration level of the driver.Hence this paper presents an exhaustive
review on the implementations of various eye blink detection algorithms.The
detection system has also extended its application in various other fields like
drowsiness detection and fatigue detection and expression detection.
