1013
If you want to play chicken with your eyesight, and you really are a pilot, all that does is say something about your basic intelligence.
Pilot or not, it's a pity that you have never attended a lecture on eyesight safety by the likes of the late Dr. John Colvin or his successors, whose slides of the eyes of pilots who had lost an eye (and a career) in entirely avoidable circumstances are really gruesome.
I can guarantee you haven't, otherwise you wouldn't take such a flippant attitude to your eyesight. The nasty thing about cumulative damage is that it can be years before you realize the extent of the damage, and CASA medicals, including CASA opthalmic checks, will not necessarily uncover it.
In the days before the beancounters took over, QF even used to fly Dr.Colvin to Sydney to address new pilots on eyesight preservation.
The human eye has evolved at ground level, with the sun shining down, it is not well adapted to above ground level use. And it's far more than just "UV", even a perspex windscreen and windows will attenuate a large % of UVa and UVb, that is but a small part of the problem.
But Hey!!, you go right ahead, stupid isn't illegal, but is sure is dumb, but at least it is only your eyes.
Tootle pip!!
PS: The Serengeti we trialled were polycarbonate, otherwise we would not have participated, I have no idea whether they ever made it to market.