A method for controlling a video output apparatus and a pair of shutter glasses utilized for viewing stereo images presented by a video output apparatus, the video output apparatus outputting a group of first images and a group of second images, alternately, the video output apparatus successively outputting a primary first image and the same image as at least a secondary first image included in the group of first images in order, within a plurality of first image output periods, respectively, the video output apparatus successively outputting a primary second image and the same image as at least a secondary second image included in the group of second images in order, within a plurality of second image output periods, respectively, one of the group of first images and the group of second images being a group of left-eye images, the other one of the group of first images and the group of second images being a group of right-eye images, the method comprising: controlling a first shutter lens (102, 104) of the pair of shutter glasses to be switched between an on-state and an off-state, wherein the first shutter lens (102, 104) stays in the on-state within a first image output period corresponding to a specific secondary first image, and stays in an off-state throughout a second image output period corresponding to a specific primary second image immediately following the specific secondary first image; and controlling a second shutter lens (102, 104) of the pair of shutter glasses to be switched between the on-state and the off-state, wherein the second shutter lens (102, 104) stays in the off-state throughout the second image output period corresponding to the specific primary second image, and stays in the on-state within a second image output period corresponding to a specific secondary second image immediately following the specific primary second image; wherein one of the first shutter lens and the second shutter lens (102, 104) is utilized for viewing left-eye images, and the other one of the first shutter lens and the second shutter lens (102, 104) is utilized for viewing right-eye images; and the first shutter lens and the second shutter lens (102, 104) simultaneously stay in the off-state only within a single continuous time period of the second image output period corresponding to the specific primary second image: wherein each image output period comprises an image driving period and an image stabilization period; controlling a backlight module of the video output apparatus such that it stays in an on-state within a specific image driving period corresponding to at least one of the specific secondary first image and the specific secondary second image, and stays in an off-state throughout the specific primary second image and stays in the off-state within at least part of one or two specific image stabilization period(s) adjacent to the specific image driving period; and a length of a time period during which the backlight module stays in the off-state within the specific image stabilization period is shorter than a length of the specific image stabilization period. controlling a first shutter lens (102, 104) of the pair of shutter glasses to be switched between an on-state and an off-state, wherein the first shutter lens (102, 104) stays in the on-state within a first image output period corresponding to a specific secondary first image, and stays in an off-state throughout a second image output period corresponding to a specific primary second image immediately following the specific secondary first image; and controlling a second shutter lens (102, 104) of the pair of shutter glasses to be switched between the on-state and the off-state, wherein the second shutter lens (102, 104) stays in the off-state throughout the second image output period corresponding to the specific primary second image, and stays in the on-state within a second image output period corresponding to a specific secondary second image immediately following the specific primary second image;