40% of the ocular delivery market is dominated of glaucoma therapies.  Glaucoma is the most common cause of blindness, affecting ~ 70 million people worldwide.  In the USA, glaucoma affects ~ 3 million Americans, leading to blindness in ~ 150,000 patients.  See http://en.wikipedia.org/wiki/Glaucoma for more information.

 Additonal Info

Glaucoma Medication