Eye diseases often deprive a person of the ability to perceive the world around him normally. Naturally, in such cases it is necessary to consult an optometrist for a thorough examination. In order to carefully examine the condition of the eyeball, the doctor may prescribe special drugs to prepare the patient for examination. One such medicine is Tropicamide. Instructions for use (we will consider analogues later) will tell you all the information that will be interesting to people with vision problems.
General description of the drug
This medicine is intended for local use, that is, for instillation into the eyes. "Tropicamide" (analogues of the drug contain the same active substance) well blocks M-cholinergic receptors, that is, the iris and ciliary body receptors . This helps not only to diagnose the disease, but also to carry out surgical intervention, as it causes accommodation paralysis and pupil dilation.
Sold "Tropicamide" (analogues of this drug can be cheaper and intended for other purposes) in dropper bottles. The volume of the bottle is 5 ml. The main active ingredient is tropicamide. 1 ml of a half-percent liquid contains 5 mg of the main substance. In addition, the following components are included in the preparation: benzalkonium chloride, sodium chloride, hydrochloric acid, sterilized water, as well as disodium salt of ethylenediaminetetraacetic acid.
Mechanism of action
"Tropicamide" (analogues can have a completely different effect on the body) paralyzes the accommodation of the eye and dilates the pupil. This helps to easily view the fundus with the help of devices. In addition, paralysis makes surgery more convenient.
The drug begins to act within a few minutes after use. The effect of dilated pupil lasts about 1-2 hours. It all depends on the concentration of the drug. Paralysis of accommodation lasts at least half an hour. Its full completion is possible only 3 hours after the injection.
The drug has a high level of absorption in the systemic circulation. That is, the risk of side effects increases. The substance is excreted after a short period of time. It will take at least 6 hours to fully recover the body after use.
Features of the interaction of the drug with other agents
"Tropicamide" (analogues of the drug will be mentioned below) can enhance its effectiveness when combined with "Quinidine", "Procainamide", tricyclic antidepressants, phenothiazines, antipsychotic substances. Therefore, when prescribing drops, the attending physician should know which drugs you are taking additionally.
Sympathomimetic agents can enhance accommodation paralysis , while parasympathomimetic drugs reduce this effect. Joint use with nitrates, nitrites, "Haloperidolum", "Disopyramide" can provoke the development of angle-closure glaucoma, as well as a strong increase in pressure inside the eye.
What indications for use exist?
So, "Tropicamide" (synonyms and analogues must be approved by the doctor) may have such indications:
1. Hardware diagnosis of the lens and fundus.
2. The study of refraction.
3. Infectious and inflammatory eye diseases.
4. The need for the development of accommodation paralysis.
5. Surgery or laser surgery (for preparation).
6. Prevention of eye infection in the postoperative period.
In which cases can not use the medicine?
To eliminate the effects of trauma or cataract treatment, it is better to use Taufon. The analogue of Tropicamide may not help in this case. The drug itself and its substitutes can not be used in such cases:
- The patient is diagnosed with angle-closure glaucoma or a pathology of a mixed type.
- Too strong reaction to the components of the drug.
- Pregnancy, as well as the period of breastfeeding.
- Infections, which are accompanied by an increase in intraocular pressure.
Features of use and dosage
Drops "Tropicamide" (analogues may be less effective) should be applied topically. That is, the fluid is instilled into the lower conjunctival sac.
In order to ensure accommodation paralysis, just 1 drop of a 1 percent solution is enough. However, it should be dripped at least 6 times. The interval between manipulations is about 5-10 minutes. After half an hour - 50 minutes. hardware research can be done.
In order to expand the pupil, it is necessary to use 1 drop of a more concentrated drug or 2 drops of a less concentrated medicine. The optimal time for ophthalmoscopy in this case occurs in 10 minutes.
If children under the age of 6 are examined, then only a half-percent solution should be used. It is also used to eliminate infectious lesions. In this case, you must drip at least 6 times a day.
It is better to use the substance before bedtime, since the drug reduces visual acuity and can cause some discomfort. If you use the product without a system without following the instructions, an overdose can occur, fraught with very unpleasant side effects.
What are the consequences?
In some diseases, the ophthalmologist may prescribe the medicine "Tropicamide" - eye drops. Analogs cannot be used on their own, since it can only be done worse. However, even this drug may cause unwanted reactions. For example, such:
- Behavioral disorders (especially in children), headaches.
- Increased intraocular pressure and lacrimation, photophobia.
- Problems with visual acuity.
- Shortness of breath, irregular heartbeat, circulatory problems, hypotension, hyperemia.
- Allergic reactions, dry mouth.
In some cases, confusion, hallucinations, or psychomotor reactions may occur. Do not use the drug intravenously, as this can lead to severe dependence on the drug.
If there is an overdose of the drug, then you need to use "Benzodiazepine". To eliminate hyperemia, it is necessary to constantly moisten the surface of the body with water and use cold compresses. Be sure to wash your hands with soap after each use of the drops.
Please note that in children, the manifestation of side effects is more pronounced. If necessary, after the study, the doctor can give the patient a drug that helps to narrow the pupil.
Special instructions for use and analogues
If Tropicamide is not suitable for you, analogues (Russia also produces some drugs) can eliminate this problem. Do not use drops for other purposes. It is an ophthalmic drug for local use.
Using contact lenses can have a negative effect. You can wear them during treatment. However, they must be worn only half an hour after instillation.
Keep in mind that the presented remedy can affect the concentration of attention and the speed of psychomotor reactions, so you can’t drive in the next 2 hours after using the remedy.
Never touch the dropper. In this way, you can infect not only the bottle itself, but also the solution inside it. Before starting the instillation, be sure to wash your hands with soap. Next, turn the bottle cap all the way. This will allow you to pierce the top of the dropper.
During instillation, try not to touch the mucous membrane of the eye. Next, you need to lean your head back and pull the lower eyelid. In the resulting bag, drop 1 drop of the substance, close your eyes tightly and press on the lacrimal canals. In this way, you will reduce the absorption of the drug by the body.
After use, wipe off excess fluid with a clean cloth. The bottle does not need to be washed or wiped. Next, just tightly close the lid.
As for the analogues, among them we can distinguish the following:
- Atropine.
- Buscopan.
- "Spazmeks."
- "Spiriva".
- Atrovent.
- Midrum.
- Midracil.
- Cycloptic.
Most of these drugs also require a doctor’s prescription.
Shelf life and user reviews
It is recommended to store the drug at room temperature. At the same time, try to limit access to medicine to children as much as possible. Do not allow direct sunlight to enter the vial. The dropper cap must be tightly closed. Shelf life of the drug is 3 years. After opening the bottle, it will have to be discarded in a month.
As for the reviews, they are more positive. Patients talk about the high effectiveness of the drug, the speed of its action, low cost (from 70 rubles). Means well relaxes the muscles of the eyes. However, during use, vision is somewhat frustrated, tingling in the eyes is felt. It should be noted that with proper use, the occurrence of adverse reactions was observed in rare cases. Now you know all the information about the Tropicamide preparation (eye drops). Instructions, analogues were reviewed in detail by us. Be healthy!