I am legally blind can I apply for a green card for my wife?

Yes you can act as both her sponsor and her financial sponsor if your income meets the requirements. An overstay would not be an obstacle if you petition her as a citizen spouse. Consider working with an attorney to represent you from start to finish so the case is processed correctly. The slightest mistake can result in long delays or worse. Some of us charge a very affordable flat fee and counsel anywhere in the USA can represent you.