Ophthalmic optics and instruments. Optical devices for low-vision aids Ingestion-build-50790 New definitions and illustrations have

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Ophthalmic optics and instruments. Optical devices for low-vision aids Ingestion-build-50790 New definitions and illustrations have1 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