TS EN ISO 11979-1

TS EN ISO 11979-1 is a vocabulary standard that defines the terms used for intraocular lenses and the terminology associated with methods used to evaluate them. Intraocular lenses are optical implants placed inside the eye, most commonly after cataract surgery or in other appropriate clinical situations; clear terminology is therefore essential for clinical communication, product documentation, and evaluation work.

How the lens terminology is organised

The standard is centered on language rather than on the device alone. Core concepts in this field typically include optical power, geometry, material, surface characteristics, and implantation-related terms. A vocabulary standard of this kind helps manufacturers, clinicians, test laboratories, and regulatory files use the same terms with the same meaning.

Relationship to evaluation methods

This part applies to terms relevant to intraocular lenses and to the methods used to evaluate them. Its role is to align terminology, not to prescribe a specific test procedure. In general technical practice, such vocabularies reduce ambiguity when discussing optical performance, material behavior, biocompatibility-related assessment, and product comparison.

TS EN ISO 11979-1 forms the terminology foundation of the ISO 11979 series, so later technical requirements and test-related parts can be read against a shared conceptual base. This listing is withdrawn as of 2019, but its subject remains important for understanding the controlled language used in intraocular lens technology.