Published online Jun 9, 2013. doi: 10.5497/wjp.v2.i2.47
Revised: March 21, 2013
Accepted: April 3, 2013
Published online: June 9, 2013
Core tip: Drug delivery to targeted ocular tissues has been a major challenge to ocular scientist, for decades. Current review intends to summarize the existing conventional formulations for ocular delivery and their advancements followed by current nanotechnology based formulation developments. Also, recent developments with other ocular drug delivery strategies employing in situ gels, implants, contact lens and microneedles have been discussed.