Prism Glass Spectacle Lenses from Japan
Glass lenses incorporating prism diopters to correct eye alignment disorders such as strabismus or diplopia, featuring base-in/out prism ground into the prescription surface. These unmounted, optically worked lenses are essential for binocular vision therapy. They remain under HTS 9001.40.00.00 as their primary role is spectacle-based vision correction.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include ophthalmologist prescription specs showing prism base and power (e.g
• 2Δ BI) to confirm medical necessity
• Ensure bilateral/single eye marking to distinguish from paired orthopedic insoles classification rules