Hydroxyamphetamine 1% eye drops are a diagnostic medicine used by eye specialists to help identify the cause of a specific eye condition called Horner syndrome.
| Drug class | Diagnostic Agent |
|---|---|
| Type | Single |
| Forms | Eye Drop |
| Common strength | 1% |
| Common Indian brands | Paremyd (with tropicamide, abroad) |
| Prescription status | Prescription (clinic use) |
What Hydroxyamphetamine 1% is used for
Hydroxyamphetamine 1% eye drops are used in a hospital or clinic setting by an ophthalmologist to help diagnose and understand the cause of a condition called Horner syndrome. Specifically, it helps the doctor pinpoint where the problem (lesion) is located within the nerve pathway affected by Horner syndrome. This information is crucial for guiding further investigations and management.
- Localising the lesion in Horner syndrome
How it works
This eye drop works by releasing a natural chemical called noradrenaline in the eye. Noradrenaline is a neurotransmitter that plays a role in nerve communication. In Horner syndrome, there’s a disruption in the nerve pathway that controls certain eye functions. By observing how the eye responds to the release of noradrenaline after administering Hydroxyamphetamine 1%, the ophthalmologist can distinguish between two different types of Horner syndrome: pre-ganglionic and post-ganglionic. This distinction helps the doctor understand whether the nerve damage is occurring before or after a specific nerve junction (ganglion), which is vital for accurate diagnosis.
How it’s used
Hydroxyamphetamine 1% is a diagnostic test drop and is administered by an eye specialist in a hospital or clinic setting. It is never for self-use. Typically, one drop is instilled into the affected eye, and the ophthalmologist then carefully observes the eye’s response over a period of time to gather the necessary diagnostic information. The exact timing and interpretation of the response will be determined by your ophthalmologist based on clinical guidelines and your specific condition.
Always follow your ophthalmologist’s exact instructions.
Brands available in India
- Paremyd (with tropicamide
- abroad)
Brand availability and pricing vary; confirm with your pharmacist.
Good to know
Prescription eye medicine — use only as directed by a qualified ophthalmologist. This page is for general education and is not a substitute for professional medical advice, diagnosis or a prescription. Do not self-medicate or reuse an old prescription. Not currently approved or routinely available in India — included for reference; ask your ophthalmologist about approved alternatives. This is given only by specialists in a hospital or clinic setting and is never for self-use.
Precautions & side effects
Hydroxyamphetamine 1% is a diagnostic test drop and is used under the direct supervision of a qualified ophthalmologist. It is a prescription eye medicine and should only be used as directed by your doctor. This medicine is not currently approved or routinely available in India and is included here for reference. Your ophthalmologist will discuss approved alternatives if needed. It is crucial to remember that this medicine is given only by specialists in a hospital or clinic setting and is never for self-use. Do not attempt to self-medicate or reuse an old prescription.
Welcome to Pristine Eye Hospitals. We understand that navigating eye conditions and their treatments can sometimes feel overwhelming. This page aims to provide you with general information about Hydroxyamphetamine 1% and related eye care. Remember, this information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or a prescription from your ophthalmologist.
Understanding Horner Syndrome
Hydroxyamphetamine 1% is primarily used to help diagnose a condition called Horner syndrome. Horner syndrome is a relatively rare condition that results from a disruption of a specific nerve pathway that originates in the brain and travels down to the eye and face. This nerve pathway controls several important functions, including pupil size, eyelid position, and sweating on one side of the face. When this pathway is damaged, it can lead to a characteristic set of symptoms, typically affecting one side of the face and eye. These symptoms can include a constricted pupil (miosis), a drooping upper eyelid (ptosis), and sometimes decreased sweating on the affected side of the face (anhidrosis). The causes of Horner syndrome can vary widely, ranging from benign conditions to more serious underlying issues such as tumours, stroke, or injury. Because the causes can be diverse and sometimes serious, an accurate diagnosis is crucial. This is where diagnostic tools like Hydroxyamphetamine 1% come into play, helping your ophthalmologist pinpoint the exact location of the nerve problem, which is vital for further investigation and appropriate management.
If you or someone you know experiences symptoms suggestive of Horner syndrome, it is important to seek prompt medical attention from an ophthalmologist or neurologist. Early diagnosis and identification of the underlying cause can significantly impact the outcome and allow for timely intervention if a serious condition is present. Your doctor will conduct a thorough examination and may recommend various tests, including specific eye drops like Hydroxyamphetamine 1%, to arrive at a precise diagnosis.
General Advice for Eye Drop Use and Hygiene
While Hydroxyamphetamine 1% is administered by a specialist, it’s always good to be aware of general best practices for eye care and eye drop use, especially if you are prescribed other eye medications. Proper hygiene is paramount when dealing with your eyes. Always wash your hands thoroughly with soap and water before touching your eyes or handling any eye medication. This helps prevent the introduction of germs that could lead to infections. When using eye drops, avoid touching the tip of the dropper bottle to your eye, eyelid, or any other surface. This can contaminate the solution and potentially cause an eye infection. If you are ever prescribed eye drops for home use, tilt your head back, gently pull down your lower eyelid to create a small pocket, and then instil the prescribed number of drops. Close your eye gently for a minute or two to allow the medicine to absorb. If you need to use more than one type of eye drop, wait at least 5-10 minutes between different medications to ensure each drop has enough time to work effectively and to prevent one drop from washing out another.
Storage and When to Seek Help
Proper storage of eye medications is essential to maintain their effectiveness and safety. Always store eye drops as directed on the packaging or by your pharmacist. Typically, most eye drops should be stored at room temperature, away from direct sunlight and excessive heat. Never use eye drops past their expiry date, and discard any opened bottles after the recommended period (usually 28 days for most multi-dose bottles, unless otherwise specified), even if there is still medicine left. This is because once opened, the sterility of the solution cannot be guaranteed indefinitely. If you experience any new or worsening eye symptoms, such as redness, pain, blurred vision, discharge, or increased sensitivity to light, after any eye procedure or while using any eye medication, contact your ophthalmologist immediately. These could be signs of an infection, an allergic reaction, or another complication that requires prompt medical attention. Always follow your ophthalmologist’s instructions carefully and attend all follow-up appointments to ensure the best possible outcome for your eye health. Your doctor is your best resource for any questions or concerns regarding your eye condition or treatment.
Frequently asked questions
What is Hydroxyamphetamine 1% used for?
Hydroxyamphetamine 1% eye drops are a diagnostic medicine used by eye specialists to help identify the cause of a specific eye condition called Horner syndrome. It helps the doctor pinpoint where the problem (lesion) is located within the nerve pathway affected by Horner syndrome.
How does Hydroxyamphetamine 1% work?
This eye drop works by releasing a natural chemical called noradrenaline in the eye. By observing how the eye responds to this, the ophthalmologist can distinguish between different types of Horner syndrome (pre-ganglionic vs. post-ganglionic), which helps in accurate diagnosis.
What are the common Indian brands for Hydroxyamphetamine 1%?
Hydroxyamphetamine 1% is not currently approved or routinely available in India. It is included for reference, and your ophthalmologist can discuss approved alternatives if needed. One brand known abroad is Paremyd (which contains Hydroxyamphetamine with tropicamide).
How is Hydroxyamphetamine 1% used?
Hydroxyamphetamine 1% is a diagnostic test drop administered by an eye specialist in a hospital or clinic setting. It is never for self-use. Typically, one drop is instilled into the affected eye, and the ophthalmologist observes the eye's response.
Is a prescription needed for Hydroxyamphetamine 1%?
Yes, Hydroxyamphetamine 1% is a prescription eye medicine. It is only used by specialists in a hospital or clinic setting and is never for self-use. You cannot obtain or use this medicine without a qualified ophthalmologist's direction.
What are the key precautions to be aware of with Hydroxyamphetamine 1%?
Hydroxyamphetamine 1% is a diagnostic test drop used under direct medical supervision. It is a prescription medicine and never for self-use. It is not routinely available in India. Always follow your ophthalmologist's instructions and do not self-medicate or reuse old prescriptions.
References
- Hydroxyamfetamine | C9H13NO | CID 3651 – PubChem – NIH
- Eye health – MedlinePlus (US National Library of Medicine)
- Eye health information – American Academy of Ophthalmology
- Learn about eye health – National Eye Institute (NIH)
- Blindness and vision impairment – World Health Organization
Medically reviewed by Dr. C Jagadesh Reddy, Chief Surgeon: Cornea, Cataract and Refractive Surgery — last reviewed 2026-07-28.
This page is for general education only and is not a substitute for professional medical advice, diagnosis or treatment. Never self-medicate or reuse an old prescription. Always consult a qualified ophthalmologist before starting, changing or stopping any eye medicine.