Last updated: September 1, 2025

Terms of Service

Welcome to our Color Blindness Test website! We're excited that you're here to learn about color vision and test your own abilities. These terms are pretty straightforward - we just want to make sure everyone understands what our service is for and how to use it responsibly.

What Our Service Is

Our website provides a free, educational color vision test based on the internationally recognized Ishihara method. Think of it as a convenient screening tool that you can use anytime, anywhere, without needing to visit a doctor's office or create an account.

What we offer:

• A scientifically-based color vision screening test
• Educational information about color blindness and color vision
• A user-friendly experience in multiple languages (English, Chinese, and Japanese)
• Complete privacy - your results stay on your device

Important: This Is Not Medical Advice

Let's be very clear about this: our test is for educational and screening purposes only. While we've designed it to be as accurate as possible using established methods, it cannot replace a comprehensive eye examination by a qualified eye care professional.

Please understand that:

• Our test is a screening tool, not a diagnostic tool
• Eye care professionals use additional tests and equipment for complete assessments
• If you have concerns about your color vision, especially if it affects your daily life or work, please consult an optometrist or ophthalmologist
• Some forms of color vision differences are very subtle and might require professional testing to detect

How to Use Our Service Responsibly

For Personal Use:

• Take the test in good lighting conditions (natural light is best)
• Ensure your screen brightness is comfortable and properly calibrated
• Don't rely solely on our results for important decisions about career choices or medical conditions
• Feel free to take the test multiple times, but remember that results can vary based on lighting, screen quality, and fatigue

For Educational Use:

• Teachers and educators are welcome to use our test for classroom demonstrations
• It's a great tool for explaining how color vision works and varies among people
• Please remind students that this is an educational activity, not a medical examination

Not Appropriate For:

• Official medical or employment screening
• Determining fitness for jobs that require specific color vision standards
• Replacing professional eye care
• Making definitive claims about someone's color vision abilities

Age Restrictions

There are no age restrictions for using our color vision test. However, we recommend that:

• Children under 13 have adult supervision when using our website
• Parents and teachers help younger children understand that this is an educational activity
• Results for young children should be interpreted carefully, as color vision abilities continue to develop

Intellectual Property

The design, content, and educational materials on our website are created to be helpful and informative. While the Ishihara color vision test methodology is well-established and widely used, our specific implementation and educational content are our work.

You are welcome to:

• Use our service for personal, educational, or non-commercial purposes
• Share links to our website with friends, family, or students
• Discuss your results and what you've learned

Please don't:

• Copy our entire website or large portions of our content
• Use our service for commercial purposes without permission
• Claim that our educational materials are your own work

Limitation of Liability

Since our service is provided free of charge and for educational purposes, we need to be clear about limitations:

• We strive for accuracy but cannot guarantee that our test will work perfectly for every person or device
• We're not responsible for decisions you make based on test results
• While we work hard to keep our website running smoothly, we can't guarantee uninterrupted service
• We're not liable for any indirect consequences of using our service

This doesn't mean we don't care about quality - we absolutely do! We continuously work to improve our service and fix any issues that arise.

Privacy and Data

Your privacy is important to us. Please read our Privacy Policy for complete details, but here's the summary:

• We don't collect or store your test results
• We don't require registration or personal information
• Your test data stays entirely on your device
• We use anonymous analytics to improve our website

Changes to Our Service

We're always looking for ways to improve our color vision test and educational content. This means we might occasionally:

• Update the test interface to make it more user-friendly
• Add new educational content or languages
• Improve the accuracy or speed of the test
• Update these terms if necessary

If we make significant changes, we'll update the date at the top of this page. For major changes that affect how you use the service, we might add a notice to the website.

International Use

Our website is designed to be used worldwide, which is why we offer it in multiple languages. However, laws and regulations vary by country:

• These terms are governed by the laws where our service is hosted
• If you're using our service from outside the United States, please ensure that online color vision testing is appropriate in your location
• Some countries may have specific regulations about medical or health-related information

Contact Us and Feedback

We love hearing from users! If you have questions, suggestions, or concerns about our service, please reach out to us at: [email protected]

We're especially interested in:

• Feedback about the test experience
• Suggestions for educational content
• Reports of any technical issues
• Ideas for improvements

Final Thoughts

We created this color vision test because we believe that understanding color vision should be accessible to everyone. Whether you're curious about your own color vision, teaching students about perception, or just exploring how your eyes work, we hope our service is helpful.

Remember, color vision differences are a natural part of human diversity. If our test suggests you might have color vision differences, that's just information about how your eyes work - it doesn't define you or limit what you can achieve.

Thank you for using our Color Blindness Test, and we hope you find it educational and interesting!