A method comprising: detecting, using a computing device (110, 300), ambient light reflected out of an eye of a subject from a retina of the eye of the subject; and making a determination about the eye of the subject based upon the reflected ambient light, wherein making a determination about the eye of the subject based upon the reflected ambient light comprises making a determination based at least in part on a brightness and one or more colors of the reflected ambient light and wherein detecting, using the computing device (110, 300), ambient light reflected out of an eye of a subject from a retina of the eye of the subject further comprises: capturing, using an image capture device, an image of the eye of a subject, wherein said image is captured using only ambient lighting conditions and wherein non-relevant reflections from the eye of the subject are managed while capturing the image, the non-relevant reflections being reflections from a cornea or a lens of the eye non-relevant to capturing the image; determining, using the computing device (110, 300), an overall intensity of light from a plurality of pixels located within the at least a portion of a pupil captured in the image; determining, using the computing device (110, 300), a first intensity of a first color from the plurality of pixels located within the at least a portion of a pupil of the eye of the subject captured in the image; determining, using the computing device (110, 300), a second intensity of a second color from the plurality of pixels located within the at least a portion of the pupil of the eye of the subject captured in the image; and comparing, by the computing device (110, 300), a relative intensity of the first color and a relative intensity of the second color, wherein said comparison and said overall intensity are used to make the determination about the eye of the subject based upon the reflected ambient light. detecting, using a computing device (110, 300), ambient light reflected out of an eye of a subject from a retina of the eye of the subject; and making a determination about the eye of the subject based upon the reflected ambient light, wherein making a determination about the eye of the subject based upon the reflected ambient light comprises making a determination based at least in part on a brightness and one or more colors of the reflected ambient light and wherein detecting, using the computing device (110, 300), ambient light reflected out of an eye of a subject from a retina of the eye of the subject further comprises: capturing, using an image capture device, an image of the eye of a subject, wherein said image is captured using only ambient lighting conditions and wherein non-relevant reflections from the eye of the subject are managed while capturing the image, the non-relevant reflections being reflections from a cornea or a lens of the eye non-relevant to capturing the image; determining, using the computing device (110, 300), an overall intensity of light from a plurality of pixels located within the at least a portion of a pupil captured in the image; determining, using the computing device (110, 300), a first intensity of a first color from the plurality of pixels located within the at least a portion of a pupil of the eye of the subject captured in the image; determining, using the computing device (110, 300), a second intensity of a second color from the plurality of pixels located within the at least a portion of the pupil of the eye of the subject captured in the image; and comparing, by the computing device (110, 300), a relative intensity of the first color and a relative intensity of the second color, wherein said comparison and said overall intensity are used to make the determination about the eye of the subject based upon the reflected ambient light. capturing, using an image capture device, an image of the eye of a subject, wherein said image is captured using only ambient lighting conditions and wherein non-relevant reflections from the eye of the subject are managed while capturing the image, the non-relevant reflections being reflections from a cornea or a lens of the eye non-relevant to capturing the image; determining, using the computing device (110, 300), an overall intensity of light from a plurality of pixels located within the at least a portion of a pupil captured in the image; determining, using the computing device (110, 300), a first intensity of a first color from the plurality of pixels located within the at least a portion of a pupil of the eye of the subject captured in the image; determining, using the computing device (110, 300), a second intensity of a second color from the plurality of pixels located within the at least a portion of the pupil of the eye of the subject captured in the image; and comparing, by the computing device (110, 300), a relative intensity of the first color and a relative intensity of the second color, wherein said comparison and said overall intensity are used to make the determination about the eye of the subject based upon the reflected ambient light.