What is ISO 15253 about?
ISO 15253 is one of a series of documents for ophthalmic optics and instruments that outlines optical and electro-optical devices for enhancing low vision that is applicable to optical and electro-optical devices specified by the manufacturer for use by visually impaired persons as low vision aids. This document specifies requirements and test methods for optical and electro-optical devices specified by the manufacturer for use by visually impaired persons as low vision devices.
The requirements within this document apply to the manufacturer of low vision devices. While the requirements can also pertain to how a particular device will function for the low vision user, some factors and variables about the user may not be known to the manufacturer, and thus specific requirements cannot be made.
Note: Implantable low vision devices are excluded.
Who is ISO 15253 for?
ISO 15253 is applicable to-
- Manufacturers of Optical and electro-optical devices
- Ophthalmologist
- Medical laboratories
Why should you use ISO 15253?
Optical and electro-optical devices are related to that produces an altered or enhanced image through the interaction between light from the object and an electronic system.
ISO 15253 provides new requirements for filters and tints, such as for users with extreme light sensitivity or reduced contrast sensitivity, independent of visual acuity or visual field loss, image relocation, such as with prisms or mirrors for users with visual field loss or eye- or head movement restriction, and text to speech for electro-optical devices that offer such capability.
What’s changed since the last update?
BS EN ISO 15253:2021 supersedes ISO 15253:2000, which has been withdrawn. BS EN ISO 15253:2021 has some significant technical changes with respect to ISO 15253:2000, these include-
- Merger of ISO 15253 and ISO 15254
- Revision of normative references
- Revision and re-organisation of terms and definitions
- Addition of new requirements for filters and tints, image relocation, and text to speech
- Editorial revision of the document
