Ophthalmic optics and instruments. Optical devices for low-vision aids Ingestion-build-50790 The Plan documents the Plan

The Plan documents the Plan owner’s processes to assure their customers and all other stakeholders that the Plan owner’s products will continue to meet their requirements

The actions of microorganisms on plastics are influenced by two different processes

critical applications

New definitions and illustrations have been added for different measurement methods for oxygen using solid electrolytes for galvanic cells

It also gives basic guidance for the selection of immunity levels

Ophthalmic optics and instruments. Optical devices for low-vision aids Ingestion-build-50790 The Plan documents the Plan1 Scope This International Standard applies to optical devices specified by the manufacturer for use by visually impaired persons as optical low vision aids. It specifies the optical and mechanical requirements and test methods for such devices, including optical devices with electrical components such as illuminators. It does not apply to electro optical devices for enhancing low vision. NOTE Requirements and test methods for electro optical devices