"Time for boffins to come up with a defence against laser pointers..."
It's not THAT hard. I mean, it will cost money. And a lot more than they are willing to pay. But...
What lasers do we have today, commercially sold?
Each one of them working with an extremely narrow range of frequencies. Put some film inside the cockpit windows that blocks these specific wavelengths. There may be some change in the scenery colors, due to these missing colors, but I don't think it would be important.
Even the red ones. The red lights use a much larger spectrum than the laser pointers.