{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T08:44:03Z","timestamp":1778661843002,"version":"3.51.4"},"reference-count":20,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2004,11,5]],"date-time":"2004-11-05T00:00:00Z","timestamp":1099612800000},"content-version":"vor","delay-in-days":4,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Paediatric Perinatal Epid"],"published-print":{"date-parts":[[2004,11]]},"abstract":"<jats:title>Summary<\/jats:title><jats:p>Risk factors were studied for visual impairment in children without known pre\u2010 or postnatal cause, for a decrease of visual acuity. Children born at term 1979\u201398 and with a visual impairment were identified from the Swedish Register of Visually Impaired Children and data were linked with the Swedish Medical Birth Registry. Maternal characteristics such as maternal age, parity, maternal smoking habits in early pregnancy, maternal education, nationality, and subfertility were studied as well as maternal diagnoses such as pre\u2010eclampsia, prolonged second stage of labour, abruptio placentae, and placenta praevia. Mode of delivery was analysed as well as birthweight, and birthweight in relation to gestational age.<\/jats:p><jats:p>Abruptio placentae turned out to be the strongest risk factor (OR\u2003=\u20038.24 [95% CI 5.01, 13.51]). Smoking did not give a statistically significant increased risk. There is an increased risk with breech delivery (OR\u2003=\u20032.01 [95% CI 1.28, 3.17]). Pre\u2010eclampsia was associated with an increased risk (OR\u2003=\u20032.22 [95% CI 1.46, 3.38]). There is also an increase in risk at low birthweight and small\u2010for\u2010gestational\u2010age as well as birthweight &gt;\u200a4\u2003kg and large\u2010for\u2010gestational\u2010age.<\/jats:p><jats:p>In this study we found that risk factors particularly worth noticing in term children with a presumed perinatal cause of visual impairment are abruptio placentae, pre\u2010eclampsia, excessively low as well as excessively high birthweight, and breech delivery, a fact worth noticing in current discussion on risks, advantages or excessive exploitation of caesarean section.<\/jats:p>","DOI":"10.1111\/j.1365-3016.2004.00587.x","type":"journal-article","created":{"date-parts":[[2004,11,5]],"date-time":"2004-11-05T14:13:16Z","timestamp":1099663996000},"page":"425-430","source":"Crossref","is-referenced-by-count":4,"title":["Risk factors in term children for visual impairment without a known prenatal or postnatal cause"],"prefix":"10.1111","volume":"18","author":[{"given":"Kristina","family":"Tornqvist","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bengt","family":"K\u00e4ll\u00e9n","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2004,11,5]]},"reference":[{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0420.1997.tb00123.x"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1755-3768.1992.tb04118.x"},{"key":"e_1_2_6_4_2","first-page":"7","volume-title":"The Epidemiology of Eye Disease.","author":"Johnsson GJ","year":"1998"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0420.1997.tb00124.x"},{"key":"e_1_2_6_6_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1755-3768.1992.tb04119.x"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1755-3768.1992.tb02139.x"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0420.1997.tb00630.x"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1177\/140349489001800209"},{"key":"e_1_2_6_10_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF01719316"},{"key":"e_1_2_6_11_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1651-2227.2001.tb00303.x"},{"key":"e_1_2_6_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9394(42)92088-9"},{"key":"e_1_2_6_13_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF00919102"},{"key":"e_1_2_6_14_2","doi-asserted-by":"publisher","DOI":"10.1136\/bjo.79.5.447"},{"key":"e_1_2_6_15_2","doi-asserted-by":"publisher","DOI":"10.1136\/bjo.82.11.1265"},{"key":"e_1_2_6_16_2","doi-asserted-by":"publisher","DOI":"10.1136\/bjo.83.2.143"},{"key":"e_1_2_6_17_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-8749.1996.tb12142.x"},{"key":"e_1_2_6_18_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0039-6257(00)00134-X"},{"key":"e_1_2_6_19_2","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.101113998"},{"key":"e_1_2_6_20_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(00)02840-3"},{"key":"e_1_2_6_21_2","unstructured":"Thorngren\u2010JerneckK.Cerebral injury in perinatal asphyxia. 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