Actually, the first point I'd like to make is that it's best if you don't fly with babies. After 18 months is not so bad, but just imagine how you'd feel in that noisy, shaky machine if you were one sixth or seventh of the size you are now! (yeah, I tried to calculate that against my body. Not so easy.)
The second thing has to do with those back-of-the-seat screens. I advise simply turning them off to avoid the glare and the rays. Sometimes you have to do this on the handset controls, and sometimes on the screen itself. The latter is not always so easy to find, so ask a flight attendant if you need to.
Think 'protection'.
