{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,19]],"date-time":"2026-04-19T00:42:32Z","timestamp":1776559352031,"version":"3.51.2"},"reference-count":26,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2022,10,22]],"date-time":"2022-10-22T00:00:00Z","timestamp":1666396800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100005809","name":"Hyderabad Eye Research Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100005809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Ophthalmic Physiologic Optic"],"published-print":{"date-parts":[[2023,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>We developed a clip\u2010on light tracker (MyLyt) for estimating light exposure in real time. This study aimed at validating and investigating the feasibility of using MyLyt in children and adults.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Method<\/jats:title>\n                    <jats:p>The study was conducted in two phases. Phase 1 involved validation against a factory\u2010calibrated digital lux meter in three separate conditions: controlled environmental set\u2010up, outdoors and indoors where intra\u2010test (two measurements by the same tracker), inter\u2010test (measurements among trackers) and inter\u2010device (MyLyt tracker and lux meter) validations were conducted. Phase 2 involved a feasibility study where MyLyt was used in a real\u2010world setting by 21 adults and 8 children. Participants were asked to log their real\u2010time movements in an \u2018activity diary\u2019, which were correlated with the lux levels measured by the tracker.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      A strong positive correlation and non\u2010significant difference in the recorded mean illuminance levels were observed during intra\u2010test (inter\u2010class correlation: 1.00,\n                      <jats:italic>p<\/jats:italic>\n                      \u00a0=\u00a00.99), inter\u2010test (0.91\u20131.00,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&gt;\u20090.15) and inter\u2010device (0.91\u20131.00,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&gt;\u20090.56) validation in all three testing conditions (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&gt;\u20090.49), except the indoor location. While the lux level measured by MyLyt was significantly higher than that of the lux meter (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.01) in the indoor locations, differences were minimal and clinically insignificant. A Bland\u2013Altman plot showed a minimal mean difference (95% limits of agreement) between the MyLyt tracker and lux meter in all three conditions (controlled environmental set\u2010up: 641 [\u2212949, 2230], outdoor: 74 [\u22122772, 2920] and indoor: \u221235 [\u2212151, 80]\u00a0lux). Phase 2 validation showed an expected illuminance level against the corresponding location with high sensitivity (97.8%) and specificity (99%) to accurately differentiate between outdoor and indoor locations.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The MyLyt tracker showed good repeatability, strong correlation and comparable values with the lux meter in the three tested conditions, making it suitable for tracking light exposure patterns for both research and clinical purposes.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/opo.13061","type":"journal-article","created":{"date-parts":[[2022,10,22]],"date-time":"2022-10-22T10:23:46Z","timestamp":1666434226000},"page":"132-140","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Development and validation of a \u2018\n                    <scp>MyLyt<\/scp>\n                    \u2019 wearable light tracking device"],"prefix":"10.1007","volume":"43","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7722-7065","authenticated-orcid":false,"given":"Rohit","family":"Dhakal","sequence":"first","affiliation":[{"name":"Myopia Research Lab, Prof. Brien Holden Eye Research Centre L V Prasad Eye Institute  Hyderabad India"},{"name":"Infor Myopia Centre, Brien Holden Institute of Optometry and Vision Sciences L V Prasad Eye Institute  Hyderabad India"},{"name":"Centre for Applied Vision Research, School of Health Sciences City, University of London  London UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jagadesh Rao","family":"Rudrapankte","sequence":"additional","affiliation":[{"name":"Center for Technology Innovation L V Prasad Eye Institute  Hyderabad India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6947-5122","authenticated-orcid":false,"given":"Harsha S. N. S.","family":"Chittajallu","sequence":"additional","affiliation":[{"name":"Center for Technology Innovation L V Prasad Eye Institute  Hyderabad India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2031-6390","authenticated-orcid":false,"given":"John G.","family":"Lawrenson","sequence":"additional","affiliation":[{"name":"Centre for Applied Vision Research, School of Health Sciences City, University of London  London UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4864-0723","authenticated-orcid":false,"given":"Byki","family":"Huntjens","sequence":"additional","affiliation":[{"name":"Centre for Applied Vision Research, School of Health Sciences City, University of London  London UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6134-0936","authenticated-orcid":false,"given":"Rakhee","family":"Shah","sequence":"additional","affiliation":[{"name":"Centre for Applied Vision Research, School of Health Sciences City, University of London  London UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7755-2178","authenticated-orcid":false,"given":"Pavan K.","family":"Verkicharla","sequence":"additional","affiliation":[{"name":"Myopia Research Lab, Prof. Brien Holden Eye Research Centre L V Prasad Eye Institute  Hyderabad India"},{"name":"Infor Myopia Centre, Brien Holden Institute of Optometry and Vision Sciences L V Prasad Eye Institute  Hyderabad India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2022,10,22]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.4081\/jphr.2013.e28"},{"key":"e_1_2_10_3_1","first-page":"7","article-title":"The future of healthcare technology","volume":"52","author":"Thielst CB","year":"2007","journal-title":"J Healthc Manag"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1093\/jnci\/djx046"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbi.2019.103153"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jshs.2021.07.008"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0192691"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.5665\/sleep.4966"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.1080\/09500340.2013.845700"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1080\/07420520903044315"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1097\/OPX.0b013e31827cda5b"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0b013e3182a388c0"},{"key":"e_1_2_10_13_1","first-page":"1045","article-title":"The measurement of time spent outdoors in child myopia research: a systematic review","volume":"11","author":"Wang J","year":"2018","journal-title":"Int J Ophthalmol"},{"key":"e_1_2_10_14_1","doi-asserted-by":"publisher","DOI":"10.1167\/iovs.14-15978"},{"key":"e_1_2_10_15_1","doi-asserted-by":"publisher","DOI":"10.1097\/OPX.0000000000000160"},{"key":"e_1_2_10_16_1","doi-asserted-by":"publisher","DOI":"10.1167\/iovs.18-24415"},{"key":"e_1_2_10_17_1","first-page":"1542","article-title":"Objectively measured near work, outdoor exposure and myopia in children","volume":"104","author":"Wen L","year":"2020","journal-title":"Br J Ophthalmol"},{"key":"e_1_2_10_18_1","doi-asserted-by":"publisher","DOI":"10.1167\/tvst.6.3.20"},{"key":"e_1_2_10_19_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0254027"},{"key":"e_1_2_10_20_1","doi-asserted-by":"publisher","DOI":"10.1097\/OPX.0000000000001013"},{"key":"e_1_2_10_21_1","doi-asserted-by":"publisher","DOI":"10.1111\/opo.12860"},{"key":"e_1_2_10_22_1","unstructured":"Philips.Actiwatch spectrum activity monitor. 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Accessed January 29 2022."},{"key":"e_1_2_10_23_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10916\u2010020\u201001694\u20104"},{"key":"e_1_2_10_24_1","doi-asserted-by":"publisher","DOI":"10.1111\/opo.12945"},{"key":"e_1_2_10_25_1","doi-asserted-by":"publisher","DOI":"10.18520\/cs\/v119\/i10\/1616-1619"},{"key":"e_1_2_10_26_1","doi-asserted-by":"publisher","DOI":"10.1097\/OPX.0000000000000982"},{"key":"e_1_2_10_27_1","doi-asserted-by":"publisher","DOI":"10.1097\/OPX.0000000000000980"}],"container-title":["Ophthalmic and Physiological Optics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/opo.13061","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/opo.13061","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/opo.13061","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,1,7]],"date-time":"2026-01-07T11:23:30Z","timestamp":1767785010000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/opo.13061"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,10,22]]},"references-count":26,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2023,1]]}},"alternative-id":["10.1111\/opo.13061"],"URL":"https:\/\/doi.org\/10.1111\/opo.13061","archive":["Portico"],"relation":{},"ISSN":["0275-5408","1475-1313"],"issn-type":[{"value":"0275-5408","type":"print"},{"value":"1475-1313","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,10,22]]},"assertion":[{"value":"2022-04-28","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2022-09-23","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2022-10-22","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}