In redesigning the OKKO Health results experience, I addressed three key challenges to increase repeat usage and ensure patients felt genuine value from monitoring their vision at home:

Users did not clearly understand the value of their results

Data showed a significant drop-off after 1–2 tests. While the product was clinically sound, users were not consistently seeing why regular testing mattered.

I conducted moderated usability sessions with AMD patients, synthesised findings using thematic analysis, and mapped emotional journeys across the results experience. A recurring insight was that users interpreted single test results as definitive, rather than part of a pattern over time.

To address this, I reframed the results experience around the concept of a user’s “usual visual range.” Instead of focusing on raw scores or performance, the interface now communicates whether a result sits within or outside a person’s typical pattern. This shifted the narrative from performance to monitoring, reinforcing long-term value.

Results feedback risked causing anxiety or misinterpretation

Testing revealed that certain visual cues and language created unintended alarm, particularly when a result fell outside a typical range.

I established tone and language guardrails to ensure results were observational rather than diagnostic. Alarmist phrasing was removed, and messaging now clearly reflects that changes may be driven by a single recent score, encouraging repeat testing to confirm patterns.

I explored multiple visualisation approaches, including plain-language summaries, status indicators, and trend-based visuals. These were prototyped in Figma and tested with users to assess comprehension, reassurance, and perceived usefulness.

Accessibility was central throughout. Designs were reviewed against WCAG guidelines, colour usage was refined to avoid clinical red signals, and a new typeface was introduced to support larger, more legible interfaces for visually impaired users.

Users lacked a clear understanding of how monitoring works over time

Early-stage users did not fully grasp how their “normal” vision range was established, which reduced motivation to continue testing.

I designed a “Building your usual vision range” experience to clearly explain what happens during the initial phase of use. Progress indicators and simplified explanatory copy helped users understand that multiple tests are required to establish a baseline. This reframed repeated testing as meaningful participation rather than repetition.

The final designs include:

• A results experience centred on “usual visual range” rather than raw scores

• Separate left and right eye views to reflect AMD-specific needs

• Clear review-status communication without implying urgency

• Encouragement to repeat testing to confirm patterns

• A structured onboarding/results state explaining how the monitoring model works

• High-contrast, low-cognitive-load visual design tailored for visually impaired users