I think that blind people can't normally using Bitcoin, access their wallets , get their private keys and so on without the help of their relatives/ friends.. which is making some problems for them i guess.
Is it possible to create a way for them to access their wallets, send bitcoins..by voice for example ?
Or any other suggestions ?
Definitely doable and probably not even that hard to implement. The problem is, no dev(s) will be willing to spend their time on working on such device/software unless there's a demand for it. I don't reckon there's currently any large number of blind want-to-be bitcoiners.