Overview
SIST EN ISO 11979-1:2026 sets forth standardized terminology for intraocular lenses (IOLs), a crucial category of ophthalmic implants. This international standard, developed by CEN in collaboration with ISO, serves as Part 1 of a broader series dedicated to IOLs and focuses specifically on vocabulary and definitions. By providing clear and uniform definitions, EN ISO 11979-1 facilitates consistent communication among manufacturers, healthcare providers, regulatory authorities, and researchers in the field of ophthalmic implants.
The vocabulary encompasses terms relating to IOL types, properties, components, evaluation methods, clinical scenarios, and aspects of manufacturing and packaging. The terms are listed in alphabetical order for ease of reference, and the definitions are crafted to ensure clarity and alignment with both clinical and regulatory needs.
Key Topics
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Comprehensive IOL Definitions
- Types of intraocular lenses: monofocal, multifocal, toric, accommodating, extended depth of focus, and phakic IOLs
- Key components: optic, haptic, body, closed-loop, and open-loop designs
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Evaluation and Performance Terms
- Dioptric power, base power, addition power, effective focal length, and spherical equivalent power
- Clinical metrics: visual acuity, subjective and objective refraction
- Durability: dynamic fatigue, stability, shelf-life, and photostability
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Manufacturing and Packaging
- Definitions related to manufacturing date, sterilization load, package system, primary and protective packaging
- Device tracking: device history record, patient implant card (PIC), patient information leaflet (PIL)
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Preclinical and Clinical Assessment
- Test procedures and reference to related assessments (e.g., ocular/non-ocular implantation tests, Nd-YAG laser exposure test)
- Definitions supporting clinical investigations and adverse event tracking
Applications
SIST EN ISO 11979-1:2026 provides practical value across the ophthalmic sector by enabling:
- Standardized Documentation: Manufacturers can align product specifications and labelling with internationally recognized terminology, supporting regulatory submission and market approval.
- Enhanced Clinical Practice: Ophthalmic surgeons and clinical staff benefit from common definitions when selecting and implanting IOLs, promoting patient safety and treatment efficacy.
- Regulatory Consistency: National and international authorities leverage the standard’s definitions to harmonize evaluation criteria and post-market surveillance.
- Research and Development: R&D teams utilize precise terms during product design, testing, and the publication of clinical results, allowing for reproducibility and comparability across studies.
- Traceability and Patient Communication: Improved clarity in packaging, labelling, and patient information ensures devices are used appropriately and patients remain well-informed about their implants.
Related Standards
SIST EN ISO 11979-1:2026 forms the foundational vocabulary for the IOL standard series. Key related documents include:
- EN ISO 11979 (all parts): The overarching series on ophthalmic implants - intraocular lenses.
- EN ISO 11979-2: Optical properties and test methods for IOLs.
- EN ISO 11979-7: Clinical investigations of intraocular lenses for the correction of aphakia.
Integration with these and other healthcare technology vocabularies (ICS 01.040.11) and standards related to ophthalmic equipment (ICS 11.040.70) ensures comprehensive coverage and compatibility across the international medical device landscape.
By standardizing intraocular lens terminology, SIST EN ISO 11979-1:2026 supports innovation, safety, and effective clinical outcomes throughout the ophthalmic industry. For stakeholders seeking to ensure compliance, interoperability, and best practices in the field of ophthalmic implants, this standard provides essential guidance.
