1. A method of automatically capturing a fundus image of an eye, the method comprising: retrieving at least one first image from an image sensor device; processing, using at least one computing device, the at least one first image digitally to generate a processed image, including: downsampling the at least one first image; converting the at least one first image into at least one monochromatic image; applying a mask to remove a portion of the at least one first image; processing the at least one first image for scaling and calculating absolute values of array element associated with the at least one first image to generate a result, and converting the result to unsigned 8 bit; calculating a mean and standard deviation of the array elements associated with the at least one first image; calculating a slope of the mean; and determining the mean, standard deviation, and slope are within a predetermined range; detecting, using the at least one computing device, at least one point of interest in the processed image; determining, with the at least one computing device, whether the at least one point of interest is representative of a corresponding feature of the eye; and capturing the fundus image of the eye based on the at least one first image.