Hydroxychloroquine is a medicine primarily used for conditions like rheumatoid arthritis and lupus, and while it is not an eye medicine, it requires mandatory and regular eye monitoring to protect your vision.
| Drug class | Caution – Systemic Drugs Needing Eye Monitoring |
|---|---|
| Type | Single |
| Forms | Tablet |
| Common strength | 200 mg / 300 mg |
| Common Indian brands | HCQS, Plaquenil |
| Prescription status | Prescription (rheumatology) – eye screening mandatory |
What Hydroxychloroquine is used for
Hydroxychloroquine is a powerful medicine that your rheumatologist might prescribe for conditions such as:
- Rheumatoid Arthritis: This is a long-term condition that causes pain, swelling, and stiffness in the joints.
- Lupus (Systemic Lupus Erythematosus): This is an autoimmune disease where the body’s immune system mistakenly attacks its own tissues and organs, including joints, skin, kidneys, blood cells, brain, heart, and lungs.
It is very important to understand that Hydroxychloroquine is NOT an eye medicine. Instead, it is a systemic medicine, meaning it works throughout your body. However, because it can affect your eyes, especially with long-term use, mandatory eye monitoring is crucial for anyone taking this medication.
How it works
Hydroxychloroquine works by modulating the immune system, which helps to reduce inflammation and pain in conditions like rheumatoid arthritis and lupus. While it is effective in managing these systemic diseases, its mechanism of action can, in a small proportion of long-term users, lead to a specific type of irreversible damage to the macula. The macula is a small but vital part of your retina, responsible for your central vision and ability to see fine details and colours. The damage, known as ‘bull’s-eye maculopathy’, affects this crucial area, which is why regular eye monitoring is so important.
How it’s used
Hydroxychloroquine is available in tablet form and comes in strengths of 200 mg and 300 mg. It is a prescription medicine, and your rheumatologist will determine the correct dose and duration of treatment based on your specific condition and needs. You must follow your rheumatologist’s instructions precisely regarding how and when to take this medicine. Do not alter your dose or stop taking the medicine without consulting your doctor.
While your rheumatologist manages your overall treatment with Hydroxychloroquine, your ophthalmologist (eye doctor) plays a critical role in monitoring your eye health. This medicine requires mandatory retinal screening to detect any potential eye damage early. This eye monitoring is a crucial part of your treatment plan, ensuring your vision is protected while you manage your underlying condition.
Always follow your ophthalmologist’s exact instructions.
Brands available in India
- HCQS
- Plaquenil
Brand availability and pricing vary; confirm with your pharmacist.
Important safety warning
MANDATORY EYE MONITORING. This medicine can damage the retina or optic nerve. Anyone taking it long-term needs baseline and regular eye screening (as advised — often OCT, visual fields and colour vision). Report any change in vision, colour perception or side vision immediately. Damage found late is often permanent.
Precautions & side effects
Taking Hydroxychloroquine requires careful attention to your eye health. Here are the critical precautions you must be aware of:
- Mandatory Eye Monitoring: This is the most crucial precaution. Anyone on Hydroxychloroquine needs regular eye check-ups.
- Baseline Retinal Examination: You must have a comprehensive retinal examination within the first year of starting Hydroxychloroquine. This establishes a baseline for your eye health.
- Annual Screening After 5 Years: After taking the medicine for 5 years, you will need annual eye screening. This typically includes advanced tests like Optical Coherence Tomography (OCT) and visual field tests.
- Earlier Screening: If you are on a high dose of Hydroxychloroquine, have kidney disease, or have any existing retinal disease, your ophthalmologist may recommend annual screening much earlier than 5 years.
- Irreversible Damage: It is vital to understand that Hydroxychloroquine can cause irreversible damage to the macula (bull’s-eye maculopathy) in a small proportion of long-term users.
- Early Detection is Key: Damage detected early through regular screening can often be halted, preventing further vision loss. However, damage that is already established does not reverse. This means any vision loss that has occurred may be permanent.
- Report Vision Changes Immediately: You must report any change in your vision, colour perception, or side (peripheral) vision to your ophthalmologist or rheumatologist without delay. Early reporting can make a significant difference in preserving your vision.
- Prescription Only: Hydroxychloroquine is a prescription medicine (rheumatology). Eye screening is mandatory as part of this prescription.
- Warning Level: Critical: This medicine carries a critical warning level due to its potential to damage the retina or optic nerve.
Always remember that while Hydroxychloroquine is essential for managing your systemic condition, protecting your eyes through regular monitoring is equally important.
Understanding Your Vision and the Importance of Eye Monitoring
Your eyes are incredible organs, allowing you to experience the world around you. The retina, a light-sensitive layer at the back of your eye, plays a crucial role in vision. Within the retina, a small area called the macula is responsible for your sharp, central vision, enabling you to read, recognise faces, and see fine details and colours. When you are prescribed a medicine like Hydroxychloroquine for conditions such as rheumatoid arthritis or lupus, it’s important to understand that while it helps manage your primary illness, it can, in rare cases, affect this vital part of your eye. This is why Pristine Eye Hospitals emphasises mandatory and regular eye monitoring.
Rheumatoid arthritis and lupus are chronic autoimmune diseases that can significantly impact your quality of life. Rheumatoid arthritis causes inflammation in your joints, leading to pain, swelling, and stiffness, often affecting the hands and feet. Lupus is a more widespread condition where your immune system attacks various organs and tissues throughout your body. Hydroxychloroquine is an effective treatment for these conditions, helping to reduce inflammation and manage symptoms. However, because of its potential to affect the macula over time, your eye doctor becomes an essential part of your healthcare team, working alongside your rheumatologist to safeguard your vision.
The Role of Your Ophthalmologist: Protecting Your Eyes
At Pristine Eye Hospitals, we understand the importance of comprehensive care. When you are on Hydroxychloroquine, your ophthalmologist’s role is to conduct specific tests to monitor your retinal health. These tests are not just routine eye check-ups; they are specifically designed to detect the subtle changes that Hydroxychloroquine might cause before they lead to significant and irreversible vision loss. The initial ‘baseline’ examination within the first year of starting the medication is crucial. It provides a reference point for your eye doctor to compare future test results against. After five years of treatment, or earlier if you have certain risk factors like high dosage, kidney disease, or pre-existing retinal conditions, annual screenings become mandatory. These screenings often include advanced imaging techniques like Optical Coherence Tomography (OCT), which provides detailed cross-sectional images of your retina, allowing your doctor to see even very minor changes in the macula. Visual field tests are also important, as they help detect any changes in your peripheral (side) vision or blind spots that you might not notice otherwise. Colour vision tests may also be part of the comprehensive monitoring.
It is vital to attend all your scheduled eye appointments. These regular checks are your best defence against potential vision damage. If any changes are detected early, your doctor can discuss adjustments to your treatment plan with your rheumatologist, potentially halting further damage. Remember, damage that is already established does not reverse, meaning any vision loss that has occurred due to the medication is often permanent. Therefore, proactive monitoring is key to preserving your precious eyesight.
General Advice for Patients on Systemic Medications
Taking any long-term medication requires a partnership between you and your healthcare providers. Here are some general tips to help you manage your health effectively:
- Maintain Open Communication: Always keep your rheumatologist and ophthalmologist informed about all medications you are taking, including over-the-counter drugs, supplements, and herbal remedies.
- Follow Instructions Diligently: Adhere strictly to the dosing instructions provided by your rheumatologist for Hydroxychloroquine. Do not miss doses or change your dosage without medical advice.
- Report Symptoms Promptly: Pay close attention to your body and vision. If you notice any changes in your vision, such as blurriness, difficulty seeing fine details, changes in colour perception, or problems with your side vision, contact your ophthalmologist or rheumatologist immediately. Do not wait for your next scheduled appointment.
- Healthy Lifestyle: While not directly related to Hydroxychloroquine’s eye effects, maintaining a healthy lifestyle with a balanced diet, regular exercise, and adequate sleep can support your overall health and well-being.
- Protect Your Eyes: Beyond monitoring for medication effects, protect your eyes from environmental factors. Wear sunglasses when outdoors to shield your eyes from harmful UV rays, and use appropriate eye protection during activities that pose a risk of injury.
- General Eye Hygiene: Always maintain good eye hygiene. Avoid rubbing your eyes excessively, and if you wear contact lenses, ensure they are handled and cleaned according to instructions to prevent infections.
At Pristine Eye Hospitals, your vision is our priority. We are here to support you through your treatment journey, ensuring that you receive the best possible care for your eyes while managing your systemic conditions. Regular monitoring and open communication are the cornerstones of protecting your vision for years to come.
Frequently asked questions
What is Hydroxychloroquine used for?
Hydroxychloroquine is a medicine primarily used to treat autoimmune conditions such as rheumatoid arthritis and lupus. It is not an eye medicine, but it requires mandatory eye monitoring due to its potential effects on the eyes.
How does Hydroxychloroquine work?
Hydroxychloroquine works by modulating the immune system to reduce inflammation and pain associated with conditions like rheumatoid arthritis and lupus. In a small proportion of long-term users, it can cause irreversible damage to the macula, a vital part of the retina responsible for central vision.
What are the common Indian brands of Hydroxychloroquine?
In India, common brands of Hydroxychloroquine include HCQS and Plaquenil.
How is Hydroxychloroquine taken?
Hydroxychloroquine is taken as a tablet, typically in strengths of 200 mg or 300 mg. The exact dosage and duration will be prescribed by your rheumatologist. It is crucial to follow their instructions precisely.
Is a prescription needed for Hydroxychloroquine?
Yes, Hydroxychloroquine is a prescription-only medicine, typically prescribed by a rheumatologist. Mandatory eye screening is also required as part of the treatment.
What are the key precautions for taking Hydroxychloroquine?
The most critical precaution is mandatory eye monitoring. You need a baseline retinal examination within the first year and annual screening (OCT and visual field) after 5 years, or earlier if you are on a high dose, have kidney disease, or existing retinal disease. Report any change in vision, colour perception, or side vision immediately, as damage found late is often permanent.
References
- Hydroxychloroquine Ocular Toxicity: A Comprehensive Review
- 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.