A method for monitoring an image of an examinees eye includes: obtaining first image data including a first examinees eye image captured by a first ophthalmologic photographing apparatus, and additional information including type information on the first examinees eye image obtaining second image data including a second examinees eye image captured by a second ophthalmologic photographing apparatus different from the first ophthalmologic photographing apparatus, and additional information including type information on the second examinees eye image recognizing the first examinees eye image and the second examinees eye image as the same type of images, based on the additional information and correcting a difference between the first examinees eye image and the second examinees eye image.
