bionic eye

I just saw online where there is a bionic eye transplant.  My son was born w/ cataracts on both eyes and thus, has had his lens removed from his eyes.   He has 20/50 vision w/ correction on his right eye and 20/300 on his left eye.  He wears contacts and this is the best correction w/ his left eye.   Is there any new development for better vision for him?  Also, he has nystigmus (not sure how to spell this)  and glaucoma that is controlled w/ meds.  He is 35 y.o.
Thank you, Mom