Unless you are referring to surgical removal of congenital cataracts (and that is not recent, the first such an operation was in the early 18th century [PDF]) such technologies still fall very far short of “reversing blindness”. I presume you are talking about sensory substitution systems (which convert a signal from a video camera into sound or tactile signals) and “artificial retinas”. These can provide some ability to get information about the environment from the information in ambient light, but nothing like the rich amount of information (or the subjective feel of seeing) available to someone with healthy vision. Nevertheless, blind people can learn to use such systems (it is something they have to learn, it does not happen as soon as they are hooked up) to get some sense of visual perspective, and an ability to judge the relative distances of objects.
Actually, even without such technological aids, people who have been blind from a young age are capable of having some sense of perspective, and it appears in drawings made by blind people using tactile feedback (i.e., they can feel what they are drawing, by using a system in which the drawing implement leaves a raised ridge on the “paper”. They produce recognizable, if crude, drawings.
People who are blind from birth and known to be blind from birth are actually rather rare, because the symptoms of blindness are not very obvious in newborns (they can’t do very much anyway). Blindness researchers usually prefer to talk about “early blind” people rather than “congenitally blind” ones, but that, of course, begs a lot of questions when it comes to issues like this because it seems likely that sighted babies are rapidly developing their visual abilities from the moment they are born. Also, I believe even “early blindness” is relatively rare compared to blindness acquired later in life due to accident or disease. However, there has been quite a lot of research since the 17th century on how well early blind people who get their sight restored can see (the issue is known as Molyneux’s Problem). It seems clear that they can learn to do so, and can certainly learn to judge distance and perspective, but it takes a period of learning and they may never be able to learn to see as well as a person who could see when they were an infant.