 Ocular diseases can be treated using nanotechnology-based systems. Nanoparticles have been developed to target specific ocular tissues and deliver drugs to treat ocular diseases such as corneal disorders, glaucoma, retinal diseases, and coroid diseases. These nanoparticle-based systems offer advantages over traditional methods, including improved bioavailability and reduced side effects. This article was authored by Yuhua Wang, Wanlu, Shubin Jean, and others.