Unmentioned is whether the optic muscles were connected and/or usable: iris, cilia, 6 motor muscles/nerves to move the eyeball. The cosmetic benefit over a glass eye depends entirely on whether the eyeball moves somewhat normally, if not the iris responding normally.

Beyond that I'd offer zero hope of restoring any kind of visual acuity.

The term "Nerve" is used both for the bundle of neurons and for each neuron. Virtually all neurons, but particularly those in the eye, have a body-mapping to a corresponding area in the brain (and in the case of vision, across 2 sets of neurons). For vision, these nerves end in a columnar organization such that secondary neurons essentially observe these primary ones to detect e.g., motion across an axis at that point.

Even if you just clipped one optic nerve bundle and then tried to have it grow back together, there's no way you'd get even most of the connections right for the million+ neurons. So I see no hope for doing that with someone else's eye. So there's no real visual-function reason to try the eye transplant.

Worse, transplant drugs generally suppress the body's immunological response, in the normal compartments (blood and lymph). I'm not sure anyone's really tested transplantation in the brain compartment. I suppose an option for rejection is to remove the eye, but how much of the nerve would have to be removed? How much brain surgery would be require for that?

Or perhaps worse, imagine signals do get through but hugely messy. If/since flashing lights and swerving horizons can produce headache and nausea, I can't imagine what this visual garbage would do.

In this case, I'd be concerned this electrical lineman was caught up in the surgeon's desire to make a name for himself.