Pivotal Trial Validating Usability and Visualization Performance of Home OCT in Neovascular Age-Related Macular Degeneration: Report 1.

PURPOSE: To validate the usability and visualization performance of the index test of the home OCT system (HOCT) during a pivotal study toward de novo US Food and Drug Administration marketing authorization.

DESIGN

A prospective, 5-week longitudinal, at-home visualization multicenter study with preplanned office visits at week 1 and week 5 and as-needed interim visits.

PARTICIPANTS

The study enrolled adults aged ≥55 years diagnosed with neovascular age-related macular degeneration (nAMD) on anti-VEGF therapy in at least 1 eligible eye and best-corrected visual acuity of 20/320 or better.

METHODS

Participants self-installed and imaged daily with the HOCT at home for 5 weeks with 2 or 3 interspersed office visits at 1 and 5 weeks with interim reading center (RC)-triggered visits including a comparator in-office OCT (IO-OCT). Scans with an acceptable quality signal index were independently graded by the RC in a masked manner.

MAIN OUTCOME MEASURES: Ability to self-image at home, positive and negative percent agreement (NPA) in visualization of total hyporeflective spaces (TRO) on HOCT and on IO-OCT.

RESULTS

At home, self-imaging success rate was 96.1% (95% confidence interval [CI]: 92.2%-98.4%). One hundred eighty participants self-imaged the primary and secondary eyes 5426 and 4012 times with a mean (standard deviation) manufacturer signal quality index of 4.40 (1.26) and 4.58 (1.28), respectively. Positive percent agreement was 86.6% (95% CI: 80.4%-92.8%) and NPA was 86.1% (95% CI: 80.4%-91.8%), with nearly all disagreements being minimal.

CONCLUSIONS

The target population successfully self-installed and self-imaged at home with image quality comparable to IO-OCT. The findings of the visualization study support the intended use of the system as a tool to monitor TRO at home between routine clinical visits during the management of nAMD.

FINANCIAL DISCLOSURES: Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.