Review title is No comparison in USA [SEP] I have been diagnosed with one of the autosomal recessive corneal dystrophies. Yes pain is involved. These eye drops are beyond compare for dry irritated eye feelings and pin stab feelings. In addition they may help repair some corneal thinning and torn edges. I'm hoping it helps slow the process. It definitely makes for a much better eye feel. And sometimes when my eyes really hurt like knife stabs these drops are quite comforting.