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
Glasses Parts: 1. Eye Wires â The front portion of the reading glasses where lenses are inserted and held in place. Also referred to as rims. 2. End Pieces â Small parts of the frame that extend outward from the lenses to connect the eye wires and the temples. 3. Bridge â The arched piece in the front, center of the frames that rests on the wearerâs nose and connects the eye wires. The bridge is designed to bear most of the glassesâ weight.