Downstream of dams, marked changes in fish populations occur as a consequence of blockage of migration routes, disconnection of the river and floodplain and changes in flow regime, physiochemical conditions (e.g. temperature, turbidity and dissolved oxygen), primary production and channel morphology.
A final consideration is allergic reactions to the glaucoma drugs. âWith both Combigan and Simbrinza, the allergy rates are unknown. Brimonidine is a component of both drugs; when it was first introduced, it was associated with a 20% allergy rate.he availability of combination anti-glaucoma therapies is a boon for patients and physicians when considering that about 40% of patients with glaucoma require two or more drugs to control elevated IOP levels.
Prostaglandin analogs are glaucoma drugs available by the brand names Xalatan, Travatan Z, and Lumigan. These glaucoma drugs have few systemic side-effects associated with changes in the eye itself. This glaucoma treatment is used mainly in open-angle glaucoma. Alpha-agonists are a third type of glaucoma drugs that not only reduce the production of aqueous humor but also increase drainage of the eye. This category of glaucoma drugs includes Apraclonidine (Brand name: Opidine) and Brimonidine (Brand name: Alphagan).