1. An apparatus for determining a break-up time of an ocular tear film, comprising: a control system configured to: (a) receive at least one first image of an area of interest of an ocular tear film captured by an imaging device while illuminated by a light source; (b) start a time measurement instrument; (c) receive at least one second image of the area of interest of the ocular tear film captured by the imaging device while illuminated by the light source; (d) analyze the at least one first image and the at least one second image to determine if a change has occurred in the area of interest; (e) if a change has occurred in the area of interest, determine if a threshold level has been reached; and (f) if the threshold level has been reached, measure an amount of time from the start of the time measurement instrument until a time that the threshold level has been reached.