I think some are misunderstanding what is meant by "aiming" a l@ser.
An incredibly brief flash past the cockpit is not going to damage eyes unless the l@ser is spectacularly strong. To maintain accuracy on the cockpit at any range handheld is impossible.
To put this into some perspective, these nasty little ch@v criminals are taking handheld high power l@sers (5-10watt) and aiming them in the direction of the aircraft. Due to the high quantities of illicit substances in their blood stream their little hands are shaking which means that the whole aircraft gets a good bathing in l@ser light caused by their inability to hold the l@ser steadily. All it needs is a brief glimpse of the l@ser light entering the flight deck and for one of the crew to look in the general direction of the light (natural human reaction) and them be caught by the full strength of the l@ser when it finds its way back into the FD window again.
IMHO, find the perps, make an example out of them (big time) and ban anything but the lowest powered l@sers.