PCSLearner,

This toxic waste dump concept addresses the dead brain cells. The question here is about delayed onset of symptoms. That toxic waste dump releases the tRNA that causes damaged, not dead, brain cells to shut down. This shut down of damaged brain cells can take place weeks later, thus causing delayed symptoms that manifests when these damaged brain cells shut down.

What the eye doctor was addressing is the way the brain will attempt to rewire around the dead or shut down brain cells. The healthy brain cells have lost their connection to other cells because they are dead.

They send out axons and dendrites that sort of probe for new connections. Their attempts to connect must be accepted by the dendrite contacted. If not, the axon will shrink back and try a different direction. This happens thousands of time as the new connections around the dead cells are built.

Therapy pushes this rewiring effort by causing blood flow to the area to increase supporting more of this rewiring effort. The blood flow must be re-established first, then the new axonal connections.

Researchers have been able to observe this with high power microscopes and rat brain tissue en vitro.