Wearable electronic devices in the nature of surgical eyewear; Downloadable computer software and related computer hardware for use in viewing images, in overlaying pre-operative and intra-operative imaging and information in real-time, in intra-operative multi-modal imaging, in adjusting magnification of images in real-time, and in collecting surgical and medical imaging and data; Downloadable computer software and related computer hardware for use in viewing images, in overlaying pre-operat...