What is the use of eye banks, if eyeball transplants do not exist at present?
You are asking two questions that you think are connected but are actually not.


  Question 1 - What is the use of eye banks?


Answer: It's to store corneas for transplant for people with cornea damage.


  Question 2 - What use is cornea transplant to a completely blind person?


Answer: It depends. If the blindness is due to clouded cornea (several diseases cause this) then replacing the cornea will reverse the blindness. If the blindness has other causes then cornea transplant is of no use to the person.