It is likely going to be possible to grow an eye in a vat. I talked to a retinologist who was working on genetic diseases like retinitis pigmentosa and he ment

It is likely going to be possible to grow an eye in a vat. I talked to a retinologist who was working on genetic diseases like retinitis pigmentosa and he mentioned that in the lab their stem cell developments were growing not only retinal cells but at least malformed somewhat recognisable eye structures. I fully believe that at some point in the next 50 years full organ replacements from the patients own stem cells (perhaps with lightly edited genetics) will be commonplace. The work here is an obvious preliminary.