{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,29]],"date-time":"2026-05-29T16:24:39Z","timestamp":1780071879679,"version":"3.54.0"},"reference-count":29,"publisher":"Elsevier BV","issue":"12","license":[{"start":{"date-parts":[[2013,12,1]],"date-time":"2013-12-01T00:00:00Z","timestamp":1385856000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2013,12,1]],"date-time":"2013-12-01T00:00:00Z","timestamp":1385856000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"funder":[{"name":"Abrahamson Pediatric Eye Institute"},{"name":"Division of Pediatric Ophthalmology"},{"DOI":"10.13039\/100007172","name":"Cincinnati Children's Hospital Medical Center","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100007172","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["aaojournal.org","clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Ophthalmology"],"published-print":{"date-parts":[[2013,12]]},"DOI":"10.1016\/j.ophtha.2013.07.051","type":"journal-article","created":{"date-parts":[[2013,10,15]],"date-time":"2013-10-15T22:19:06Z","timestamp":1381875546000},"page":"2706-2713","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":26,"title":["Length of Day during Early Gestation as a Predictor of Risk for Severe Retinopathy of Prematurity"],"prefix":"10.1016","volume":"120","clinical-trial-number":[{"clinical-trial-number":"nct00000133","registry":"10.18810\/clinical-trials-gov"},{"clinical-trial-number":"nct00000156","registry":"10.18810\/clinical-trials-gov"},{"clinical-trial-number":"nct00027222","registry":"10.18810\/clinical-trials-gov"}],"author":[{"given":"Michael B.","family":"Yang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sujata","family":"Rao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David R.","family":"Copenhagen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Richard A.","family":"Lang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.ophtha.2013.07.051_bib1","doi-asserted-by":"crossref","first-page":"1572","DOI":"10.1056\/NEJM199805283382202","article-title":"Light Reduction in Retinopathy of Prematurity (LIGHT-ROP) Cooperative Group. Lack of efficacy of light reduction in preventing retinopathy of prematurity","volume":"338","author":"Reynolds","year":"1998","journal-title":"N\u00a0Engl J Med"},{"key":"10.1016\/j.ophtha.2013.07.051_bib2","first-page":"112","article-title":"Effect of light on oxygen-induced retinopathy in the mouse","volume":"35","author":"Wesolowski","year":"1994","journal-title":"Invest Ophthalmol Vis Sci"},{"key":"10.1016\/j.ophtha.2013.07.051_bib3","first-page":"1595","article-title":"The effect of light on oxygen-induced vasoproliferative retinopathy in newborn kittens","volume":"33","author":"Kremer","year":"1992","journal-title":"Invest Ophthalmol Vis Sci"},{"key":"10.1016\/j.ophtha.2013.07.051_bib4","doi-asserted-by":"crossref","first-page":"243","DOI":"10.1038\/nature11823","article-title":"A\u00a0direct and melanopsin-dependent fetal light response regulates mouse eye development","volume":"494","author":"Rao","year":"2013","journal-title":"Nature"},{"key":"10.1016\/j.ophtha.2013.07.051_bib5","unstructured":"UNSW Embryology. Carnegie Stage Comparison. Available\u00a0at: http:\/\/php.med.unsw.edu.au\/embryology\/index.php?title=Carnegie_Stage_Comparison. Accessed March 11,\u00a02013."},{"key":"10.1016\/j.ophtha.2013.07.051_bib6","doi-asserted-by":"crossref","first-page":"273","DOI":"10.1016\/0028-2243(79)90068-6","article-title":"Early human development and the chief sources of information on staged human embryos","volume":"9","author":"O'Rahilly","year":"1979","journal-title":"Eur J Obstet Gynecol Reprod Biol"},{"key":"10.1016\/j.ophtha.2013.07.051_bib7","series-title":"The House Mouse: Atlas of Mouse Development","first-page":"113","author":"Theiler","year":"1989"},{"key":"10.1016\/j.ophtha.2013.07.051_bib8","doi-asserted-by":"crossref","first-page":"5804","DOI":"10.1073\/pnas.101113998","article-title":"Low IGF-I suppresses VEGF-survival signalling in retinal endothelial cells: direct correlation with clinical retinopathy of prematurity","volume":"98","author":"Hellstrom","year":"2001","journal-title":"Proc Natl Acad Sci U S A"},{"key":"10.1016\/j.ophtha.2013.07.051_bib9","first-page":"539","article-title":"Risk analysis and an alternative protocol for reduction of screening for retinopathy of prematurity","volume":"13","author":"Yang","year":"2009","journal-title":"J\u00a0AAPOS"},{"key":"10.1016\/j.ophtha.2013.07.051_bib10","first-page":"253","article-title":"Race, gender, and Clinical Risk Index for Babies (CRIB) score as predictors of severe retinopathy of prematurity","volume":"10","author":"Yang","year":"2006","journal-title":"J\u00a0AAPOS"},{"key":"10.1016\/j.ophtha.2013.07.051_bib11","doi-asserted-by":"crossref","first-page":"230","DOI":"10.1016\/S0161-6420(93)31665-9","article-title":"Cryotherapy for Retinopathy of Prematurity Cooperative Group. Prognostic factors in the natural course of retinopathy of prematurity","volume":"100","author":"Schaffer","year":"1993","journal-title":"Ophthalmology"},{"key":"10.1016\/j.ophtha.2013.07.051_bib12","doi-asserted-by":"crossref","first-page":"1130","DOI":"10.1001\/archopht.1984.01040030908011","article-title":"Committee for the Classification of Retinopathy of Prematurity. An international classification of retinopathy of prematurity","volume":"102","year":"1984","journal-title":"Arch Ophthalmol"},{"key":"10.1016\/j.ophtha.2013.07.051_bib13","doi-asserted-by":"crossref","first-page":"1628","DOI":"10.1016\/S0161-6420(91)32074-8","article-title":"Cryotherapy for Retinopathy of Prematurity Cooperative Group. Incidence and early course of retinopathy of prematurity","volume":"98","author":"Palmer","year":"1991","journal-title":"Ophthalmology"},{"key":"10.1016\/j.ophtha.2013.07.051_bib14","doi-asserted-by":"crossref","first-page":"1684","DOI":"10.1001\/archopht.121.12.1684","article-title":"Revised indications for the treatment of retinopathy of prematurity: results of the Early Treatment for Retinopathy of Prematurity randomized trial","volume":"121","author":"Early Treatment of Retinopathy of Prematurity Cooperative Group","year":"2003","journal-title":"Arch Ophthalmol"},{"key":"10.1016\/j.ophtha.2013.07.051_bib15","first-page":"46","article-title":"Multicenter Trial of Cryotherapy for Retinopathy of Prematurity Cooperative Group. Outcome\u2013based management of retinopathy of prematurity","volume":"1","author":"Hardy","year":"1997","journal-title":"J\u00a0AAPOS"},{"key":"10.1016\/j.ophtha.2013.07.051_bib16","doi-asserted-by":"crossref","first-page":"839","DOI":"10.1148\/radiology.148.3.6878708","article-title":"A\u00a0method of comparing the areas under receiver operating characteristic curves derived from the same cases","volume":"148","author":"Hanley","year":"1983","journal-title":"Radiology"},{"key":"10.1016\/j.ophtha.2013.07.051_bib17","doi-asserted-by":"crossref","first-page":"686","DOI":"10.1016\/j.ophtha.2007.05.040","article-title":"Season of birth, natural light, and myopia","volume":"115","author":"Mandel","year":"2008","journal-title":"Ophthalmology"},{"key":"10.1016\/j.ophtha.2013.07.051_bib18","doi-asserted-by":"crossref","first-page":"463","DOI":"10.1353\/hub.2009.a369716","article-title":"Seasonality in birth weight: review of global patterns and potential causes","volume":"81","author":"Chodick","year":"2009","journal-title":"Hum Biol"},{"key":"10.1016\/j.ophtha.2013.07.051_bib19","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1159\/000114252","article-title":"Seasonal variation in pre-eclamptic rate and its association with the ambient temperature and humidity in early pregnancy","volume":"66","author":"Tam","year":"2008","journal-title":"Gynecol Obstet Invest"},{"key":"10.1016\/j.ophtha.2013.07.051_bib20","doi-asserted-by":"crossref","first-page":"699","DOI":"10.1097\/EDE.0b013e3181a66e96","article-title":"Seasonality of birth and implications for temporal studies of preterm birth","volume":"20","author":"Darrow","year":"2009","journal-title":"Epidemiology"},{"key":"10.1016\/j.ophtha.2013.07.051_bib21","doi-asserted-by":"crossref","first-page":"F28","DOI":"10.1136\/adc.2007.136945","article-title":"Explaining educational inequalities in preterm birth: the Generation R study","volume":"94","author":"Jansen","year":"2009","journal-title":"Arch Dis Child Fetal Neonatal Ed"},{"key":"10.1016\/j.ophtha.2013.07.051_bib22","first-page":"114","article-title":"Retinopathy of prematurity: lack of association with prenatal care","volume":"3","author":"Higgins","year":"1999","journal-title":"J\u00a0AAPOS"},{"key":"10.1016\/j.ophtha.2013.07.051_bib23","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1097\/GCO.0b013e3283505ab3","article-title":"Vitamin D in pregnancy: current concepts","volume":"24","author":"Urrutia","year":"2012","journal-title":"Curr Opin Obstet Gynecol"},{"key":"10.1016\/j.ophtha.2013.07.051_bib24","first-page":"1415","article-title":"Ethnicity modifies seasonal variations in birth weight and weight gain of infants","volume":"133","author":"Van Hanswijck de Jonge","year":"2003","journal-title":"J\u00a0Nutr"},{"key":"10.1016\/j.ophtha.2013.07.051_bib25","first-page":"447","article-title":"High prevalence of vitamin D insufficiency in black and white pregnant women residing in the northern United States and their neonates","volume":"137","author":"Bodnar","year":"2007","journal-title":"J\u00a0Nutr"},{"key":"10.1016\/j.ophtha.2013.07.051_bib26","doi-asserted-by":"crossref","first-page":"604","DOI":"10.1001\/archopht.1997.01100150606005","article-title":"Cryotherapy for Retinopathy of Prematurity Cooperative Group. Racial variation in retinopathy of prematurity","volume":"115","author":"Saunders","year":"1997","journal-title":"Arch Ophthalmol"},{"key":"10.1016\/j.ophtha.2013.07.051_bib27","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1001\/archopht.130.1.117","article-title":"Beta-blocking and racial variation in the severity of retinopathy of prematurity","volume":"130","author":"Good","year":"2012","journal-title":"Arch Ophthalmol"},{"key":"10.1016\/j.ophtha.2013.07.051_bib28","doi-asserted-by":"crossref","first-page":"642","DOI":"10.1111\/j.1525-1470.2009.00977.x","article-title":"Propranolol for infantile hemangiomas: promise, peril, pathogenesis","volume":"26","author":"Frieden","year":"2009","journal-title":"Pediatr Dermatol"},{"key":"10.1016\/j.ophtha.2013.07.051_bib29","doi-asserted-by":"crossref","first-page":"510","DOI":"10.1038\/nm1750","article-title":"A\u00a0GRK5 polymorphism that inhibits beta-adrenergic receptor signaling is protective in heart failure","volume":"14","author":"Liggett","year":"2008","journal-title":"Nat Med"}],"container-title":["Ophthalmology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S016164201300691X?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S016164201300691X?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,27]],"date-time":"2025-09-27T14:04:21Z","timestamp":1758981861000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S016164201300691X"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013,12]]},"references-count":29,"journal-issue":{"issue":"12","published-print":{"date-parts":[[2013,12]]}},"alternative-id":["S016164201300691X"],"URL":"https:\/\/doi.org\/10.1016\/j.ophtha.2013.07.051","relation":{},"ISSN":["0161-6420"],"issn-type":[{"value":"0161-6420","type":"print"}],"subject":[],"published":{"date-parts":[[2013,12]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Length of Day during Early Gestation as a Predictor of Risk for Severe Retinopathy of Prematurity","name":"articletitle","label":"Article Title"},{"value":"Ophthalmology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.ophtha.2013.07.051","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 2013 American Academy of Ophthalmology. Published by Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}