Graeme MacKenzie is Director of Riemann Ltd, an ophthalmic research consultancy, through which he works with the Chen Yet-Sen Family Foundation to lead its portfolio of ophthalmic research.

Graeme MacKenzie is Director of Riemann Ltd, an ophthalmic research consultancy, through which he works with the Chen Yet-Sen Family Foundation to lead its portfolio of ophthalmic research. His work focuses on the design, delivery, and interpretation of clinical trials examining how access to vision correction affects health, livelihoods, and wider social outcomes.

A clinical research specialist with experience across China, Bangladesh, India, Vietnam, and Africa, he has played a central role in randomised controlled trials linking the correction of refractive error to the UN Sustainable Development Goals, exploring how vision influences outcomes well beyond the conventional health silo, including road safety, education, and cognitive performance. He works at the boundary between science, operations, and communication, coordinating multi-institution collaborations and translating findings into evidence that funders and policymakers can act on.

On the commercial side, he has worked extensively with adjustable-focus eyewear, including how adjustable-focus lens systems interact with the vergence and accommodative systems, and brings particular expertise in statistical process control, ophthalmic modelling, and the regulation of spectacle sales across high-income and low- and middle-income settings.