SIST EN ISO 18369-1:2017 PDF

Overview

SIST EN ISO 18369-1:2017 (ISO 18369-1:2017) is the international standard for ophthalmic optics that defines the vocabulary, classification system and recommendations for labelling specifications of contact lenses. It establishes consistent terms, symbols and abbreviations for the physical, chemical and optical properties of contact lenses, their manufacture and use. The document also covers terms for contact lens care products, incorporates material classifications (rigid vs soft, gas‑permeable, hydrogel), and recommends how lens specifications should be presented on labels and documentation.

Key Topics and technical content

• Terminology and symbols: comprehensive list of defined terms (contact lens, corneal, scleral, lenticular, contact shell, etc.), preferred wording and admitted forms, plus international symbols and abbreviations.
• Material classification: distinction between rigid (water content