I remember back in the late 70's or early 80's a show about a man who became a giant, possibly a robot, and fought monsters. I am fairly sure it is not Ultraman. I remember his giant form was a brownish colour. it aired on WTBS and was live action. One episode that stands out has him blinded in his giant form and when he returns to human size his eyes look as if they were burned shut and scabbed over. I also remember vaguely there was a young boy who always seemed to be around whenever he fought the monsters, for some reason or another.
Edit #1 After checking on the suggestions I can say it isn't Johnny Sokko or Ambassador Magma
I have also ruled out Ryūsei Ningen Zone(Zone Fighter)
still looking for the show's name and after a bit more research , checking pictures online, the robot form of the hero looked a lot like Spectreman (already ruled out) except for the point on his head. I know this is of little help, but I thought it worth mentioning