But new Johns Hopkins research in mice suggests that neural stem cells, the bodyâs source of new brain cells, are resistant to radiation, and can be roused from a hibernation-like state to reproduce and generate new cells able to migrate, replace injured cells and potentially restore lost function.
Pupillary Distance (PD) You'll need to know your PD if you want to order glasses from EyeBuyDirect. Don't worry if your glasses prescription doesn't include your PD, we can show you how to measure it by yourself. How to measure your pd
Some additional details for PD measurement: +++++ Pupillary Distance Measurement Pupillary Distance is the distance between the center of one pupil (the central black dot of your eye) to the center of the other pupil. Measured in millimeters, PD is important as it helps the laboratory technician to accurately create your eyeglasses frames by lining up your pupil with the center of the lens. As for obtaining your PD