BlueLens Test Card Kit — 10-Pack PVC Blue Light Detection

See how much blue light your glasses actually block. The BlueLens Test Kit includes 10 reusable PVC cards that visually confirm blue light blocking performance when exposed to a blue light source. A brilliant add-on product for anyone who buys blue light glasses — and a trust-building accessory that shows your products really work.

Key Features

• 10 reusable PVC test cards per pack
• Works with any blue light source (phone screen, UV torch, LED)
• Colour change clearly shows blue light blocking effectiveness
• Instructions in English included
• Ideal for schools, opticians, and personal use

Retail Price: $9.99 USD / ₹839 INR