Magnesium may guard vision, but timing and concentration narrow the therapeutic window

Retinal ganglion cells, known as RGCs, are the retina’s final link to the brain. They collect processed visual information, and their axons form the optic nerve. When these cells die, the lost connection cannot easily be rebuilt. This loss happens, among other conditions, in glaucoma, which affects more than 70 million people worldwide. RGCs are also at risk during…