7-Day Guarantee
Test your lenses. If blue light passes through — we exchange them for free.
How to Test Your Lenses
Every HMzVision order includes a UV Test Card. Follow these simple steps to verify your blue light protection:
Place the UV Test Card on a flat surface
Make sure the card is facing up with the test area visible.
Place your HMzVision lens directly on top of the card
The lens should cover the test area completely.
Shine a lighter or UV light through the lens onto the card
Hold the light source directly above the lens.
Check the result
✅ GOOD: No blue light appears on the card — your lenses are working perfectly.
❌ NOT WORKING: Blue light appears on the card — you are eligible for a free exchange.
7-Day Guarantee Terms
- Valid for: All HMzVision glasses (Day Signature, Night Signature, Day Elite, Night Elite).
- Timeframe: You have 7 days from delivery date to test your lenses.
- What happens: If blue light appears on the test card, we will exchange your glasses for a new pair — free of charge.
- No refunds: This is an exchange-only guarantee. We do not offer money-back refunds.
- Free shipping: HMzVision covers all shipping costs for the exchange.
- Keep or return: In some cases, we may let you keep the old lenses and still send you a new pair.
⚠️ Not covered: Physical damage (scratches, drops, broken frames) is not covered under this guarantee.
How to Request an Exchange
If your test shows blue light passing through the lens, follow these steps:
- Take a clear photo or video of the test showing the blue light on the card.
- Send the photo/video to us on Instagram DM or via email.
- Include your order number and the glasses model you need replaced.
- We will confirm your exchange and arrange the new pair to be shipped to you.
📱 Contact us to start your exchange:
@hmzvision_ — DM us your test result
or email: hmzvision1@gmail.com
Important Reminder
You must test your lenses within the first 7 days after receiving your order. After day 7, this guarantee no longer applies. We recommend testing your glasses as soon as your package arrives.
Every order includes: Your glasses + UV Test Card + Instructions.