Homatropine Resource Site




Homatropine belongs to the group of medicines called anti-muscarinics. Homatropine acts on receptors in the muscles of the eye (muscarinic receptors). These receptors usually cause constriction and thickening of the lens (focusing the eye), and closing of the iris (pupil constriction). By blocking these receptors, homatropine produces dilatation of the pupil (mydriasis) and prevents the eye from accommodating for near vision (cycloplegia). Homatropine is given as eye drops to dilate the pupil and relax the lens so that eye examinations can be carried out thoroughly. Irises that are dark in colour require larger doses of eye drops as they do not dilate as easily in response to this medication. What is the most important information I should know about homatropine ophthalmic? Do not touch the dropper to any surface, including your eyes or hands. The dropper is sterile. If it becomes contaminated, it could cause an infection in your eye. Apply light pressure to the inside corner of your eye (near your nose) for 1 to 3 minutes after each drop to prevent the medicine from draining down your tear duct. Use caution when driving, operating machinery, or performing other hazardous activities. Homatropine ophthalmic may cause blurred vision. If you experience blurred vision, avoid these activities. The effects of even one drop of this medication can last for up to 3 days. Be sure that your vision is clear before attempting any activity that could be dangerous. Homatropine ophthalmic may make your eyes more sensitive to light. Protect your eyes when you are going to be in bright light. What is homatropine ophthalmic? Homatropine ophthalmic causes the muscles in your eye to become relaxed. This widens your pupil. Your pupil will remain wide and will not respond to light. Homatropine ophthalmic is used to dilate (widen) your pupil when you have an inflammatory condition or in diagnostic or postsurgery situations in which this effect may be helpful. Homatropine ophthalmic may also be used for purposes other than those listed in this medication guide. Who should not use homatropine ophthalmic? Do not use homatropine ophthalmic if you have glaucoma that is not being treated. Homatropine ophthalmic eye drops contain a preservative (benzalkonium chloride), so do not wear soft contact lenses when the eye drops are being inserted. Homatropine ophthalmic is in the FDA pregnancy category C. This means that it is not known whether it will harm an unborn baby. Do not use homatropine ophthalmic without first talking to your doctor if you are pregnant. Homatropine ophthalmic passes into breast milk in small quantities. Its effects on a nursing baby are unknown. Do not use homatropine ophthalmic without first talking to your doctor if you are breast-feeding a baby. If you are over 65 years of age, there is a greater chance that you have increased pressure in your eyes. Homatropine ophthalmic may worsen this condition. Your doctor will need to monitor this. Homatropine ophthalmic may cause unusual reactions in children and infants since they may be more susceptible to the side effects. Use extra caution when homatropine ophthalmic is being used on a child.


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