Plastic lenses..

Welders...Traditionally I always found that when I use clear plastic lenses inside and out of the dark lense of my welding shield I got a ghost of the weld puddle on whatever I was welding. I've found that using all clear glass lenses over the dark glass lense and on the inside window eliminated this problem. Eye glasses usually use plastic lenses...and as I understand it they use plastic lenses in cataract surgery... Some welding magnifiers (cheaters) are plastic as well. I avoid these whenever possible. Wonder if using plastic lenses could be causing some welders problems after cataract surgery.. I`ve been at this trade for 47 years now and will need a cataract removed soon. I want to be able to continue working at the trade...so I`m researching the options