Nanotechnology is a positive concept which will soon improved the field of medical science and technology. In this process used nano meters to penetrate and has improved the medicine and avenues of science. The various types of eye diseases will treated by this nanotechnology, and also enhance the positive effect of the medicated dose. Various aspect of treatment and diagnosis in eye disease are expected to be in future. It will not improved our approach to current therapeutic challenges, but enable to address currently unsolved problems Nanotechnology is the conducted to special treatment process to minimized the drug adverse effect and their accurate dosage form. The technology is being explore as a means of drug delivery, not only the systemic medication, but also for ocular application as many of the condition.