CASE STUDIES
Binocular Accommodation Gauge (RAF)
The Binocular Accommodation Gauge is a non-invasive, Class I medical device designed for professional use by eye care practitioners, or under their direct supervision. It is intended for use by qualified personnel such as optical assistants, optometrists, orthoptists, and ophthalmologists.
Headquarters
Scotland, UK
Founded
2025
Services
Optometry, Commercialisation
Sector
Optometric testing
The Challenge
The Binocular Accommodation Gauge—also known as the RAF (Royal Air Force) rule or RAF near-point rule—is a well-established instrument in ophthalmology, widely used to measure the near point of convergence (NPC) and the near point of accommodation (NPA). It was first introduced in 1956 by Air Vice-Marshal J.C. Neely.
Although production of the rule was discontinued due to a perceived decline in its use within modern optometric practice, recent years have seen a notable resurgence in demand. In response, Crucible Innovations was proud to take on the challenge of reimagining and delivering a high-quality, modern alternative to this classic tool.
The Process
In redesigning the product, our key objectives were to create a lighter and more durable body, explore advanced materials for the nosepiece, hand rest, and measurement slide, and ensure the product remained proudly manufactured in the UK.
We re-engineered every component from the ground up, incorporating a sleek, laser-etched anodised aluminium bar for the main body. All components are crafted from 100% recyclable materials, reflecting our commitment to both quality and sustainability.
The Outcome
Crucible Innovations now manufactures our Binocular Accommodation Rule for several leading distributors across the UK. We are also actively engaged in the development and reintroduction of specialised instruments that have been discontinued or are no longer available through mass production.
If you would like to learn more about how Crucible Innovations can assist in developing a new concept, redesigning an existing product, or purchasing a Binocular Accommodation Rule for your practice, please don’t hesitate to reach out via our contact page.
