Prism-Controlled Polycarbonate Lenses from Canada
Polycarbonate unmounted spectacle lenses incorporating prism correction for eye alignment disorders like strabismus. Base-in/out prism power built into prescription. HTS 9001.50.00.00 for specialized plastic spectacle lenses.
Duty Rate — Canada → United States
12%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Prism diopter values must appear on invoices for medical device validation
• Ophthalmologist Rx verification prevents misuse classification
• Custom slab-off prisms require made-to-measure documentation