Gonioscope Lens
Contact lens with mirrored surfaces for viewing anterior chamber angle via slit lamp. HTS 9018.90.20.00 applies to this specialized optical diagnostic accessory. Essential for glaucoma angle assessment.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If contact lenses for vision correction
Corrective optical lenses classify under heading 9001, not diagnostic instruments.
If for specific artificial organ monitoring
Chapter notes direct certain medical optical goods to dedicated subheadings.
If disposable plastic without mirrors
Plain plastic medical articles classify by material composition.
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Import Tips & Compliance
• Specify sterile single-use vs. reusable with autoclave instructions
• Include material safety data for methylcellulose coupling medium compatibility
• Document integration with slit lamp biomicroscopes for proper medical classification
Related Products under HTS 9018.90.20.00
Phoropter Lens Set
A set of trial lenses used in phoropters for refractive error testing during eye examinations. This optical instrument and its accessories fall under HTS 9018.90.20.00 as other optical appliances for sight-testing in medical sciences. It enables precise vision correction measurements.
Slit Lamp Biomicroscope
High-magnification optical instrument using a narrow beam of light for detailed anterior segment eye examination. Classified in HTS 9018.90.20.00 as other optical appliances for medical sight-testing. Essential for diagnosing corneal and lens abnormalities.
Ophthalmic Trial Lens Kit
Portable set of spherical, cylindrical, and prism trial lenses for refraction testing in optometry. Falls under HTS 9018.90.20.00 as optical accessories for sight-testing instruments. Used to determine eyeglass prescriptions accurately.
Retinoscope Optical Accessory
Streak retinoscope with cobalt blue filter and fixation target for objective refraction. HTS 9018.90.20.00 covers this as other optical sight-testing appliance. Detects refractive errors without patient response.
Keratometer Measurement Head
Precision optical attachment measuring corneal curvature for contact lens fitting. Classifies under HTS 9018.90.20.00 as optical appliance part for sight-testing. Provides dioptric measurements of corneal astigmatism.
Fundus Camera Lens Adapter
Optical interface converting standard cameras for retinal fundus photography. Falls under HTS 9018.90.20.00 as sight-testing optical accessory. Enables high-resolution retinal vessel documentation.