Careprost eye drops 0.03% (also known as Lumigan and Latisse in the US) is an ophthalmic solution used to lower pressure within the eye, known as intraocular pressure (IOP) in the treatment of glaucoma, which is raised IOP caused by a build up of fluid (aqueous humour) in the eye. Increased IOP can cause damage to the optic nerve fibres that lead out of the back of the eye to the brain and may cause gradual loss of sight, starting with peripheral vision and eventually to total blindness in that eye. Careprost 0.03% increases the drainage of aqueous fluid out of the eye which decreases IOP and prevents loss of sight. Careprost eye drops are also used to treat ocular hypertension (increased IOP without ocular nerve damage) to lower IOP. Careprost eye drops 0.03% are also used to treat hypotrichosis, which is when eyelash growth is abnormal or not sufficient to give you adequate or enough eyelashes, and allows you to grow longer, thicker and darker eyelashes. How does Careprost work?