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 people are sensitive to that focal plane, when wearing glasses that correct to 20/20 or higher, at close-up distance. Mmmm, no headaches! The key here is the close-up use of the high prescription. If you donât get headaches when you use less close-up focus, itâs most likely the prescription.