Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Possible routes of drug delivery to the retina via topical administration. After topical instillation, NPs generally distribute through three main pathways: tear turnover, anterior (cornea/conjunctiva), and the nasolarimal drainage system. RPE: retinal pigment epithelium; BRB: blood–retinal barrier.
