Going from bright to shade
Effects the eyes efficiency.

It’s an adjustment both ways
Darkness into light equally.

Psychology though one can
Easily be out of switch reach.

Illuminating the mind is never
An easy task, it’s invisible pain.

This too will pass is an old wives
Tale, just as cod liver oil in the ear!

Scale of one to ten can’t be used
to fathom depression, by depth

The rope in the boot of my car
could be used to measure it's weight