{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T22:38:44Z","timestamp":1757630324462,"version":"3.44.0"},"reference-count":40,"publisher":"Public Library of Science (PLoS)","issue":"9","license":[{"start":{"date-parts":[[2025,9,10]],"date-time":"2025-09-10T00:00:00Z","timestamp":1757462400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012618","name":"National Institute for Health Research Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology","doi-asserted-by":"publisher","award":["None allocated"],"award-info":[{"award-number":["None allocated"]}],"id":[{"id":"10.13039\/501100012618","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012617","name":"Moorfields Eye Hospital NHS Foundation Trust","doi-asserted-by":"publisher","award":["None allocated"],"award-info":[{"award-number":["None allocated"]}],"id":[{"id":"10.13039\/501100012617","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100017645","name":"Moorfields Eye Charity","doi-asserted-by":"publisher","award":["None allocated"],"award-info":[{"award-number":["None allocated"]}],"id":[{"id":"10.13039\/501100017645","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Ubisense","award":["None allocated"],"award-info":[{"award-number":["None allocated"]}]},{"name":"Zeiss UK","award":["None allocated"],"award-info":[{"award-number":["None allocated"]}]},{"name":"Optos","award":["None allocated"],"award-info":[{"award-number":["None allocated"]}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"<jats:sec id=\"sec001\">\n<jats:title>Objectives<\/jats:title>\n<jats:p>To describe the research principles and cohort characteristics of the multi-disciplinary Project HERCULES, an innovative model of safe high-volume outpatient eye-care service for patients with stable chronic eye diseases. Results and analyses of the workstreams within Project HERCULES will be reported elsewhere. The rationale was to improve eye-care capacity in the National Health Service (NHS) in England through the creation of technician-delivered monitoring in a large retail-unit in a London shopping-centre, with remote asynchronous review of results by clinicians (named Eye-Testing and Review through Asynchronous Clinic (Eye-TRAC)). UCL\u2019s Bartlett School of Sustainable Construction developed the RIBA (Royal Institute of British Architects) Stage 1 briefing requirements for optimal design specifications for this model of care from first principles research, by analysing ergonomic data from multiple iterations.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec002\">\n<jats:title>Methods<\/jats:title>\n<jats:p>Patients aged 18 years or above being monitored in secondary care in Moorfields Eye Hospital NHS Trust for stable glaucoma or retinal conditions were given appointments at Eye-TRAC at Brent Cross, London. Patients were also recruited at City Road and Hoxton Eye-TRACs, as comparators for the motion tracking study. Willing participants were recruited when attending Eye-TRAC from 11<jats:sup>th<\/jats:sup> October 2021\u20131<jats:sup>st<\/jats:sup> December 2023, during this time four spatial \u201citerations,\u201d with different configurations of equipment were investigated in succession. Recruited participants provided information on their eye health and quality of life via a questionnaire, as well as agreeing to wear a tracking device. The tracking device was worn for the duration of their clinic visit and along with directly observed timings built a picture of patient and staff flow through the clinic. Rapid qualitative and ethnographic analyses were conducted, drawing on staff, manager and patient interviews and observation of service delivery and challenges. Separately, anonymised data from across the Trust informed an analysis of the impact of opening the Eye-TRACs on Trust-wide waiting times. A nationwide discrete choice experiment was also conducted to assess patients\u2019, healthcare providers\u2019, and the public\u2019s preferences for key service features..<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec003\">\n<jats:title>Findings to date and conclusion<\/jats:title>\n<jats:p>41,567 patients attended the Brent Cross Eye-TRAC between 11<jats:sup>th<\/jats:sup> October 2021 and 1<jats:sup>st<\/jats:sup> December 2023. 5,539 patients were recruited to Project HERCULES. Spatial configurations promoting independently parallel patient journeys with limited queuing, and direct line of sight between diagnostic stations, supported efficient patient flow. The latter iteration incorporated cataract clinics. Although it added more system complexity, it enabled the evaluation of a further indication for use of Eye-TRAC.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec004\">\n<jats:title>Future plans<\/jats:title>\n<jats:p>The analysis of trust-wide data on the impact of the Eye-TRACs on waiting times and a nationwide evaluation of stakeholders\u2019 preferences regarding diagnostic and monitoring services for stable disease are underway. We will also identify and enumerate limitations in information technology that create bottlenecks in the review process. Qualitative analysis of patient and staff feedback alongside rapid ethnographic work to streamline services is also under way. We seek to develop a framework to help inform NHS guidance and future service planning for ophthalmology and other outpatient diagnostic services. Our data will be analysed to identify enhancements to further streamline operational efficiency.<\/jats:p>\n<\/jats:sec>","DOI":"10.1371\/journal.pone.0330863","type":"journal-article","created":{"date-parts":[[2025,9,10]],"date-time":"2025-09-10T17:43:54Z","timestamp":1757526234000},"page":"e0330863","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":0,"title":["Cohort profile: Design and methods for Project HERCULES (Healthcare Exemplar for Recovery from COVID 19 Using Linear Examination Systems): Multi-disciplinary implementation and evaluation of an asynchronous review clinic in NHS eye-care services"],"prefix":"10.1371","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0480-9574","authenticated-orcid":true,"given":"Dhakshi","family":"Muhundhakumar","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Caroline S.","family":"Clarke","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Grant","family":"Mills","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Angus I. G.","family":"Ramsay","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kerstin","family":"Sailer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter","family":"Scully","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6041-8044","authenticated-orcid":true,"given":"Duncan","family":"Wilson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2852-6912","authenticated-orcid":true,"given":"Dun Jack","family":"Fu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Siyabonga","family":"Ndwandwe","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rosica","family":"Pachilova","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anne","family":"Symons","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Steve","family":"Napier","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joy","family":"Adesanya","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gus","family":"Gazzard","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robin","family":"Hamilton","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jonathan","family":"Wilson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul","family":"Webster","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peng Tee","family":"Khaw","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8952-0659","authenticated-orcid":true,"given":"Sobha","family":"Sivaprasad","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1998-0670","authenticated-orcid":true,"given":"Hari","family":"Jayaram","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul J.","family":"Foster","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"on behalf of the HERCULES Consortium","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"340","published-online":{"date-parts":[[2025,9,10]]},"reference":[{"key":"pone.0330863.ref001","volume-title":"Health at a Glance","author":"OECD","year":"2021"},{"key":"pone.0330863.ref002","unstructured":"Consultant-led Referral to Treatment Waiting Times Data 2023-24. https:\/\/www.england.nhs.uk\/statistics\/statistical-work-areas\/rtt-waiting-times\/rtt-data-2023-24\/:NHS.England"},{"key":"pone.0330863.ref003","unstructured":"Hospital Outpatient Activity 2022-2023. 2023. https:\/\/digital.nhs.uk\/data-and-information\/publications\/statistical\/hospital-outpatient-activity\/2022-23:NHS.England"},{"issue":"5","key":"pone.0330863.ref004","doi-asserted-by":"crossref","first-page":"771","DOI":"10.1038\/eye.2017.1","article-title":"Surveillance of sight loss due to delay in ophthalmic treatment or review: frequency, cause and outcome","volume":"31","author":"B Foot","year":"2017","journal-title":"Eye (Lond)"},{"key":"pone.0330863.ref005","unstructured":"Health Services Safety Investigations Body. Investigation report: Lack of timely monitoring of patients with glaucoma [Internet]. Dorset (UK): HSSIB; 2020 [cited 2024 Nov 5]. Available from: https:\/\/www.hssib.org.uk\/patient-safety-investigations\/lack-of-timely-monitoring-of-patients-with-glaucoma\/"},{"issue":"1","key":"pone.0330863.ref006","doi-asserted-by":"crossref","first-page":"63","DOI":"10.1186\/s12913-018-2836-0","article-title":"The economic impact of sight loss and blindness in the UK adult population","volume":"18","author":"L Pezzullo","year":"2018","journal-title":"BMC Health Serv Res"},{"issue":"7","key":"pone.0330863.ref007","first-page":"717","article-title":"Impact of vision on generic health-related quality of life - A systematic review. 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Evaluation of a teledermatology triage system for referrals for suspected melanoma","volume":"63","author":"R Teague","year":"2022","journal-title":"Australas J Dermatol"},{"issue":"12","key":"pone.0330863.ref028","doi-asserted-by":"crossref","DOI":"10.1136\/bmjopen-2015-009463","article-title":"Qualitative investigation of patients\u2019 experience of a glaucoma virtual clinic in a specialist ophthalmic hospital in London, UK","volume":"5","author":"A Kotecha","year":"2015","journal-title":"BMJ Open"},{"issue":"7","key":"pone.0330863.ref029","doi-asserted-by":"crossref","first-page":"892","DOI":"10.1136\/bjophthalmol-2016-308993","article-title":"Virtual clinics in glaucoma care: face-to-face versus remote decision-making","volume":"101","author":"J Clarke","year":"2017","journal-title":"Br J Ophthalmol"},{"issue":"1","key":"pone.0330863.ref030","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1136\/bjophthalmol-2020-318556","article-title":"Expansion of patient eligibility for virtual glaucoma clinics: a long-term strategy to increase the capacity of high-quality glaucoma care","volume":"107","author":"E Nikita","year":"2023","journal-title":"Br J Ophthalmol"},{"key":"pone.0330863.ref031","doi-asserted-by":"crossref","DOI":"10.1787\/242e3c8c-en","volume-title":"Waiting Times for Health Services: Next in Line [Internet]. OECD Health Policy Studies","author":"OECD","year":"2020"},{"issue":"1","key":"pone.0330863.ref032","doi-asserted-by":"crossref","first-page":"209","DOI":"10.1038\/s41433-021-01467-4","article-title":"Virtual clinics for glaucoma care - Patients\u2019 and clinicians\u2019 experiences and perceptions: a qualitative evaluation","volume":"36","author":"PJG Gunn","year":"2022","journal-title":"Eye (Lond)"},{"issue":"6","key":"pone.0330863.ref033","doi-asserted-by":"crossref","first-page":"899","DOI":"10.1038\/eye.2017.9","article-title":"A technician-delivered \u201cvirtual clinic\u201d for triaging low-risk glaucoma referrals","volume":"31","author":"A Kotecha","year":"2017","journal-title":"Eye (Lond)"},{"issue":"2","key":"pone.0330863.ref034","doi-asserted-by":"crossref","first-page":"100","DOI":"10.1016\/j.jhin.2006.05.022","article-title":"Factors involved in the aerosol transmission of infection and control of ventilation in healthcare premises","volume":"64","author":"JW Tang","year":"2006","journal-title":"J Hosp Infect"},{"issue":"5","key":"pone.0330863.ref035","doi-asserted-by":"crossref","first-page":"630","DOI":"10.1001\/archopht.1994.01090170074026","article-title":"The VF-14. An index of functional impairment in patients with cataract","volume":"112","author":"EP Steinberg","year":"1994","journal-title":"Arch Ophthalmol"},{"issue":"10","key":"pone.0330863.ref036","doi-asserted-by":"crossref","first-page":"1727","DOI":"10.1007\/s11136-011-9903-x","article-title":"Development and preliminary testing of the new five-level version of EQ-5D (EQ-5D-5L)","volume":"20","author":"M Herdman","year":"2011","journal-title":"Qual Life Res"},{"issue":"6","key":"pone.0330863.ref037","doi-asserted-by":"crossref","first-page":"1523","DOI":"10.1007\/s11136-004-7713-0","article-title":"Comparison of the minimally important difference for two health state utility measures: EQ-5D and SF-6D","volume":"14","author":"SJ Walters","year":"2005","journal-title":"Qual Life Res"},{"key":"pone.0330863.ref038","doi-asserted-by":"crossref","first-page":"192","DOI":"10.14324\/111.9781800080881","volume-title":"The Covert Life of Hospital Architecture","author":"J Zook","year":"2022"},{"issue":"4","key":"pone.0330863.ref039","doi-asserted-by":"crossref","first-page":"654","DOI":"10.1111\/1467-9566.12670","article-title":"Analysing barriers to service improvement using a multi-level theory of innovation: the case of glaucoma outpatient clinics","volume":"40","author":"S Turner","year":"2018","journal-title":"Sociol Health Illn"},{"issue":"2","key":"pone.0330863.ref040","first-page":"98","article-title":"Practical Applications of Rapid Qualitative Analysis for Operations, Quality Improvement, and Research in Dynamically Changing Hospital Environments","volume":"49","author":"A Keniston","year":"2023","journal-title":"Jt Comm J Qual Patient Saf"}],"container-title":["PLOS One"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/dx.plos.org\/10.1371\/journal.pone.0330863","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,9,10]],"date-time":"2025-09-10T17:44:00Z","timestamp":1757526240000},"score":1,"resource":{"primary":{"URL":"https:\/\/dx.plos.org\/10.1371\/journal.pone.0330863"}},"subtitle":[],"editor":[{"given":"Shamik","family":"Polley","sequence":"first","affiliation":[],"role":[{"role":"editor","vocabulary":"crossref"}]}],"short-title":[],"issued":{"date-parts":[[2025,9,10]]},"references-count":40,"journal-issue":{"issue":"9","published-online":{"date-parts":[[2025,9,10]]}},"URL":"https:\/\/doi.org\/10.1371\/journal.pone.0330863","relation":{},"ISSN":["1932-6203"],"issn-type":[{"value":"1932-6203","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,9,10]]}}}