1. An apparatus for determining lid margin contact and/or blink rate of an eye having an upper eyelid and a lower eyelid, comprising: a control system configured to: (a) receive at least one image of an area of interest of the eye captured by an imaging device when illuminated by a light source, wherein the at least one image is captured by the imaging device over a given period of time; and (b) analyze the at least one image to determine a number of complete blinks of the eye for the given period of time, wherein the control system is further configured to analyze the at least one image of the area of interest of the eye and determine a degree of completeness for at least one of a number of partial blinks for the given period of time based on a percentage of an exposed aperture of the eye in the at least one image of the area of interest of the eye.