Discussing the great potential application of nanotechnology in the area of human health, this report asserts that research in nanomedicine will allow for a clearer understanding of how the human body functions at molecular and nanometric levels. With special emphasis on disease diagnostics and therapeutics, the nanomedicinal approach for ocular and central nervous system delivery, and promising applications for the future of the field, this revealing study offers insight into the possibility for effective intervention at pre-symptomatic, acute, or chronic stages of illness.