Footnotes

• Contributors Planning the research and conception or design of the work: SR. Data collection: SR, POB, SAS, RGD, MND, JFK, AR, AY, KTJ, DZ, JTH, SRM, DK, PES, LDC, PW, AJA, LCODK, ACH, BK, PH, LV, RIj, DG, JFA, NZG, PW, EO, JIL, FAR, SSH, FM, UP, RJG, SJ, DB, LC and MSH. Data analysis and interpretation: LCODK, ACH, BK, PH, LV, RIj, DG, JFA, NZG, PW, EO, JIL, FAR, SSH, FM, RJG and SJ. Drafting the article: SR, LC, DB, MSH, SAS, RGD, MND, JFK, AR, AY, KTJ, DZ, JTH, SRM, DK, PES, LDC, PW and AJA. Critical revision and final approval: SR, LC, DB and MSH.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests RGD, SRM, PES, AJA, ACH, PH, LV, EO and SSH are consultants for Second Sight. The authors report no other competing or financial interests in the work.

• Patient consent for publication Not required.

• Provenance and peer review Not commissioned; externally peer reviewed.

• Data availability statement All data relevant to the study are included in the article or uploaded as supplementary information.