System and method for retinal imaging

A method for capturing a stabilized retinal image of an eye of subject using a handheld retinal imaging device, the method comprising:

• a step of receiving, by an external computing device, a user input on a type of image to be captured;
• a step of conveying, by the external computing device, data to a fixation screen on an initial position of a fixation stimulus on the fixation screen;
• a step of receiving, by the external computing device, video data of the eye of the subject from a camera of the handheld retinal imaging device, and data on a position of the handheld retinal imaging device, from a 3-D accelerometer of the handheld retinal imaging device, and displaying a video based on the video data provided by the camera;
• a step of calculating, by the external computing device, during the display of the video, an updated two-dimensional position for the fixation stimulus on the fixation screen by:
• a step of detecting, using artificial intelligence techniques applied to one or more frames of the video, a location of an optic disc relative to a region corresponding to the type of image;
• and
• a step of projecting movement indicated by the 3-D accelerometer into coordinates of the fixation screen;
• a step of dynamically repositioning the fixation stimulus on the fixation screen in real time to the updated two-dimensional position to guide the subject's gaze and maintain the type of image;
• a step of determining that a stable image condition is satisfied based on the one or more frames and the position data;
• a step of conveying, by the external computing device, in response to the stable image condition, a trigger to a light source to illuminate the eye of the subject for a predefined duration, and conveying a trigger to the camera for capturing the stabilized still retinal image illuminated by the light source;
• and
• a step of displaying, by the external computing device, the stabilized retinal image on a display device and storing image data in a memory of the external computing device.