Betaxolol

Betaxolol - currently sold under brand names Betoptic, Betoptic S, Lokren, Kerlone and others - is a prescription drug used to treat Glaucomaplugin-autotooltip__plain plugin-autotooltip_bigGlaucoma

Glaucoma is a group of eye diseases - the leading cause of non-reversible blindness worldwide. It's linked* with increased intra-ocular pressure (IOP) and results in damage to the retinal cells and the optic nerve. (Note the increased IOP is also sometimes called occular hypertension.)
and its associated ocular hypertension. It was patented in 1975 and was first licenced for medical use over forty years ago.

Its mechanism of action is unknown.

There are no published data detailing the pharmacokinetic properties of betaxolol following ocular administration in humans; such information is important to assess the extent of systemic availability.

Source : Drugs, volume 40, pages 75–90

Also see :Bimatoprostplugin-autotooltip__plain plugin-autotooltip_bigBimatoprost

Bimatoprost is a drug used to treat Glaucoma - linked to excess pressure within the eye. It currently has more than 2 million prescriptions per year in the US alone. Marketed, usually as eye-drops, under the brand names Lumigan, Latisse, Vistitan