![]() ![]() Pupil constriction Pupil constriction Pupil constriction slight Symptoms of Horner’s syndrome are opposite to this because the sympathetic branch is NOT FUNCTIONING Gives tone to smooth muscle in the third eyelid resulting in it being pushed down (the globe in frontal position also does this).Gives tone to the muscles behind the eye to push it to a frontal position. ![]() Gives tone to smooth muscle in the upper eyelids helping them to be held up.The parasympathetic branch operates during relaxation ("rest and digest") and the sympathetic branch operates during times of stress ("fight or flight"). There are 2 major branches: the parasympathetic branch and the sympathetic branch. The autonomic nervous system has great control over our bodies. It is caused by interruption of the sympathetic nervous system to the eye. It affects the eye and some of the muscles around the eye. The duration of administration depends on the condition being treated, response to the medication and the development of any adverse effects.Horner’s syndrome is a condition seen in dogs, cats, horses and cattle.For mild to moderate corneal ulcers and anterior uveitis, the drug may be given 1 to 3 times daily.The more inflammation present, the more resistant the iris is to dilation. Dosing frequency for atropine is highly variable, depending upon the desired degree of pupil dilation and the responsiveness of the iris.Medication should never be administered without first consulting your veterinarian.Atropine sulfate is available as a 1% solution in 2 ml, 5 ml and 15 ml bottles, and as a 1% ointment in a 3.5 gram tube.ĭosing Information of Atropine for Dogs and Cats.It has a bitter taste, and if the medication drains into the mouth, it may result in profuse salivation. Atropine solution is poorly tolerated in cats and some dogs.Consult with your veterinarian to determine if other drugs your pet is taking could interact with atropine. Atropine may interact with other medications.Repeated use can cause a substantial decrease in tear production.Atropine should not be used in cases of lens luxation (when the lens separates from its attachments within the eye).Atropine should not be used in animals with glaucoma, or in animals predisposed to glaucoma.Atropine should not be used in animals with known hypersensitivity or allergy to the drug.While generally safe and effective when prescribed by a veterinarian, atropine can cause side effects in some animals.It is used to dilate the pupil when the interior of the eye is inflamed.It is used to dilate the pupil before and after certain ocular surgical procedures, such as removal of the lens.It is used topically to relieve pain and spasm of the iris.Veterinary formulations: Various generic preparations.Human formulations: Atropine Care® (Akorn), Atropine 1% sterile ophthalmic solution® (Medical Ophthalmics), Atropine 1% sterile ophthalmic solution USP® (Bausch & Lomb), Atropine sulfate sterile ophthalmic ointment 1%® (Bausch & Lomb), and various generic preparations.This drug is registered for use in both animals and humans.Atropine is a prescription drug and can only be obtained from a veterinarian or by prescription from a veterinarian.Atropine is very potent, with effects lasting 5 to 7 days in some animals.The effect of atropine is to paralyze the sphincter muscle of the iris of the eye, which results in dilation of the pupil. The drug blocks the transmission of acetylcholine, a chemical that excites or inhibits certain activities, such as pupil dilation and constriction. Atropine acts on the parasympathetic nervous system.Other related drugs in this class include scopolamine and isopropamide. Atropine belongs to a class of drugs known as anticholinergic or parasympatholytic agents. ![]()
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