Does Heroin Dilate Pupils? Signs, Symptoms, and Key Facts Explained

Heroin addiction is a concerning phenomenon rising day by day and with each case we see how it affects our overall health. Heroin side effects are always associated with mental health or respiratory and cardiac issues. Many people have reported vision problems due to drug abuse, and Heroin was one of the drugs. A study says that the reason behind changes in one’s pupil size can be explained by how long they have used Heroin. So does Heroin really change our pupil size? If yes let us find out does Heroin dilate pupils or makes them smaller in this blog.

Heroin Definition

Heroin is an opioid psychoactive substance with no legal medical use. Before its ban in the U.S. in 1924, Heroin was used as a cough suppressant. It is made in laboratories out of the natural opiate Morphine extracted from opium plants. Heroin is sold on the streets and black markets by drug peddlers as powder or injectable fluids. It is a very fast-acting drug as using it can cause an intense “high” within 20 seconds. The mechanism that is widely known about Heroin is that it enters the system and crosses the blood-brain barrier first. From here it returns to its original state of morphine to bind with μ-opioid receptors in the brain to induce euphoria.

Does Heroin Affect Our Eyes?

Yes, when we use Heroin pupil size does change a lot. While Heroin affects the brain and many other body parts, it does affect the eyes significantly. Constriction of pupils is a common side effect of Heroin. Heroin acts on the central nervous system by causing suppression in the sympathetic nervous system. This activates the parasympathetic nervous system which has the oculomotor nerves. These nerves control the pupil mechanism in the brain that allows it to constrict the pupils. Heroin starts enacting the mechanism of endorphins that causes the pupils to get smaller. People also call the constricted pupils caused by heroin “Heroin eyes.”

Does Heroin Dilate Pupils?

Heroin does not dilate pupils, not normally. Unlike constriction dilation is not a common side effect of the opioid drug. But there are many factors that can cause Heroin pupil dilation. Let us understand this thoroughly and get to know how does Heroin dilate pupils.

Factors That Influence Heroin Dilates Pupils

Withdrawal Symptom

This is one way in which Heroin can cause pupil dilation. Pinpoint pupils are just one of the effects that happen while using Heroin. The brain adapts to these effects and begins controlling them through tolerance. But without influence, the nervous system which had grown used to the effects suddenly hyperactivates and causes many opposite reactions. This sudden burst of chain reactions can cause an adrenaline rush. This makes the iris muscle stretch and dilate the pupils. Even a research article in the Neurology Journals studied how American soldiers in the Vietnam War had constricted pupils after using Heroin but then the pupils dilated in withdrawal.

Mixing Heroin With Other Substances

This is a more dangerous instance when Heroin mixed with other drugs can widen the pupils. The most concerning interaction happens with stimulant drugs. Cocaine and Meth are two stimulant drugs that can cause dilation the quickest. Mixing them with Heroin is fatal as they are slightly or more stronger than the latter. Their effects can overtake the Heroin induced constriction and make the pupils dilate. But if you think this is the most dangerous interaction, then let us talk about mixing Heroin with alcohol. This interaction can cause hypoxia, a serious breathing condition that can not only dilate pupils but would need immediate medical attention.

Overdose

There is no need to mix alcohol with Heroin to cause hypoxia. An overdose can cause it and that is much more dangerous. Even a study in Frontiers in Psychiatry states that opioid overdose can lead to this breathing problem. Because of a lack of oxygen in the brain Heroin causes physiological stress and makes one feel absolutely threatened for life. The adrenaline surge throughout our system causes dilation in the eyes. If this situation occurs with someone you know call the ambulance immediately. Not treating this sooner might be the biggest mistake as it can cause brain damage and even death.

Light And Darkness

After reading about the dangerous ways of how does Heroin affects pupils we will now learn a very common instance where our pupils can dilate normally even in a standard dose of Heroin. Pupils can grow bigger in darkness or less lighting to try seeing best our eyes can. In the case of Heroin use, the constricted pupils can either come back to normal or enlarge a bit in the dark.

How To Stop Heroin Pupil Response?

The only answer to this question is to stop using Heroin. The treatment for Heroin dependence may finish our urge for the drugs but pupils can dilate as a part of Heroin’s withdrawal. We will also explore the medications that will deal with that problem.

Ways To Stop Dependence

In this rehabilitation process one of the most important things to make sure of is to follow every step by heart. Heroin rehabilitation is one of the most challenging because the body builds tolerance to this drug very quickly. Removing the substance from the system is the first thing people have to do. For opioids like Heroin the medical detoxification is done using medications that are used for many opioid disorders like Naltrexone and Buprenorphine. After you remove the medication, the next step involves seeking proper therapy that provides both physical and psychological relief from the dependence. Two of the best therapies that can be given here are Personalized Treatment and Family Counseling.

Tips To Manage Pupil Dilation In Rehab

If you face issues in the pupil during the rehabilitation it is more likely that the body is trying to adjust to the change. Doctors do not find the need to treat it during recovery because pupil dilation and constriction cure themselves naturally. But if there is an instance where the eye issues do not get better while being on rehab doctors must intervene and direct you to an ophthalmologist. If your pupils dilate in this stage and if it needs a medicated solution eye doctors will prescribe you Pilocarpine. Follow the instructions while taking this eye drop because you are undergoing rehab. But normally using sunglasses or lubricant eye drops will also work.

Conclusion

Using Heroin brings a lot of negative effects not just to the eyes but also to the overall health. Avoiding it is the only way in which we can stay safe from such serious issues. Pupil dilation is not just a disease but a sign of dangerous issues like hypoxia. Addressing these issues in time and taking medical guidance helps in living a life without fears. We must be more aware of the issues drug abuse causes.