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
It's important to get your monocular PD and not binocular... Even if it is 66 binocular, it could be 30 on your right side and 36 on your left, so if you only use binocular PD your glasses could be 3 mm off in both eyes... People rarely have perfectly symmetrical faces.