An ophthalmic surgical system, comprising: an imaging unit configured to generate a fundus image of an eye; a depth imaging system configured to generate a depth-resolved image of the eye; a tracking system for tracking a location, depth, proximity and movement of a surgical instrument, the tracking system communicatively coupled to the imaging unit and the depth imaging system, the tracking system comprising a processor and memory configured to: analyze the fundus image generated by the imaging unit to determine a location of a distal tip of a surgical instrument in the fundus image; analyze the depth-resolved image generated by the depth imaging system to determine a distance between the distal tip of the surgical instrument and a retina of the eye in the depth direction; generate a visual indicator to overlay a portion of the fundus image, the visual indicator indicating the determined distance between the distal tip and the retina in the depth direction; modify the visual indicator to track a change in the location of the distal tip within the fundus image in real-time; and modify the visual indicator to indicate a change in the distance between the distal tip of the surgical instrument and the retina in the depth direction in real-time, characterized in that the processor and memory of the tracking system are further configured to generate the visual indicator indicating the determined distance between the distal tip and the retina in the depth direction to overlay the distal tip of the surgical instrument within the fundus image at the determined location of the distal tip of the surgical instrument in the fundus image and further configured to modify a brightness or transparency of the visual indicator to indicate a change in the distance between the distal tip of the surgical instrument and the retina in the depth direction in real-time; wherein the brightness increases or the transparency decreases transitioning from transparent to opaque, as the distance between the distal tip of the instrument and the retina decreases. an imaging unit configured to generate a fundus image of an eye; a depth imaging system configured to generate a depth-resolved image of the eye; a tracking system for tracking a location, depth, proximity and movement of a surgical instrument, the tracking system communicatively coupled to the imaging unit and the depth imaging system, the tracking system comprising a processor and memory configured to: analyze the fundus image generated by the imaging unit to determine a location of a distal tip of a surgical instrument in the fundus image; analyze the depth-resolved image generated by the depth imaging system to determine a distance between the distal tip of the surgical instrument and a retina of the eye in the depth direction; generate a visual indicator to overlay a portion of the fundus image, the visual indicator indicating the determined distance between the distal tip and the retina in the depth direction; modify the visual indicator to track a change in the location of the distal tip within the fundus image in real-time; and modify the visual indicator to indicate a change in the distance between the distal tip of the surgical instrument and the retina in the depth direction in real-time, analyze the fundus image generated by the imaging unit to determine a location of a distal tip of a surgical instrument in the fundus image; analyze the depth-resolved image generated by the depth imaging system to determine a distance between the distal tip of the surgical instrument and a retina of the eye in the depth direction; generate a visual indicator to overlay a portion of the fundus image, the visual indicator indicating the determined distance between the distal tip and the retina in the depth direction; modify the visual indicator to track a change in the location of the distal tip within the fundus image in real-time; and modify the visual indicator to indicate a change in the distance between the distal tip of the surgical instrument and the retina in the depth direction in real-time,