Vision screening device including color imaging

A method, comprising:

• illuminating an eye of a patient during a first period of time;
• capturing a grayscale image of the eye during the first period of time;
• illuminating the eye during a second period of time separate from the first period of time;
• capturing a color image of the eye during the second period of time;
• generating, based at least in part on the grayscale image and the color image, a composite image of the eye, wherein the composite image derives a first plurality of pixel values from the grayscale image and a second plurality of pixel values from the color image;
• determining, based on at least one of the color image or the composite image, a difference between a color value associated with the eye and an expected color value, wherein the eye is a first eye of the patient, and the expected color value is one of:
• a second color value associated with a second eye of the patient or a third color value obtained from standard data associated with human eyes;
• and
• generating, based at least in part on the difference, an output associated with the patient.

A system, comprising:

• memory;
• a processor;
• and
• computer-executable instructions stored in the memory and executable by the processor to perform operations comprising:
• causing a radiation source to emit near-infrared (NIR) radiation during a first period of time;
• causing a sensor to capture a portion of the NIR radiation reflected by an eye of a patient during the first period of time;
• causing a white light source to illuminate the eye during a second period of time separate from the first period of time;
• causing a camera to capture a color image of the eye during the second period of time;
• determining, based on the color image and the portion of the NIR radiation, a difference between a value associated with the eye and an expected value;
• determining that the difference is equal to or greater than a threshold value;
• generating, based at least in part on determining that the difference is equal to or greater than the threshold value, an output indicative of a condition of the eye;
• causing the white light source to illuminate the eye of the patient from a plurality of angles during the second period of time;
• causing the camera to capture a plurality of color images of the eye of the patient, wherein each color image of the plurality of color images corresponds to an angle of the plurality of angles;
• generating, based on the plurality of color images, a video, wherein each frame of the video corresponds to a color image of the plurality of color images;
• and
• displaying, on a display screen, the video.