Portable Optometry Kit

Eyenetra is a Khosla-backed startup that builds portable optometry tools to make eye exams more accessible and affordable. We were asked to translate their complex mechanical designs into a fully realized product that is easy to use and understand, with a form language that balances clinical precision with consumer approachability.

The main tool from the optometrist's office — known as a Phoropter — was reduced in size and weight by Eyenetra's engineers to become portable. We started with a functional assembly of gears and lens carriages and worked outward from there.

Our process relied heavily on fast, rough prototypes — a new iteration daily — to explore how the device was held, aimed, and read. We were in constant collaboration with Eyenetra's lead mechanical engineer to work through the tradeoffs each prototype revealed.

The original prototype had knobs, dials, and levers for various controls, some of which were along the sides where the customer would need to hold the device. The new design utilizes knobs across all controls, placed front and center for clear access by the optometrist while the customer holds it. Two paddle-like handles provide a steadier grip for customers while pulling their hands and fingers away from the controls.

Precision and confidence are built into every detail — a strict system of spacing and alignment that required tight collaboration with engineering to push and pull internal gears and lenses into place.

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