ABSTRACT
PURPOSE: To describe ocular component values and refraction in 6-17-year-old school children in Campinas, Brazil. METHODS: To obtain a representative sample, a total of 1100 6-17-year-old public school students in Campinas, Brazil, were randomly selected and divided into groups according to median ages 6 years (range 5-7 years), 10 years (range 9-11 years), 14 years (range 13-15 years), and 17 years (range 16-18 years). Cycloplegic autorefraction and ocular biometry were performed on each child. RESULTS: Parental consent for participation was obtained for 778 of the 1100 students (70.7%). Of these, 440 (56.6%) were female and 330 (44.4%) male. Sex distributions were similar for each median age group. Median age groups 6, 10, 14, and 17 years displayed significant trends of decreasing mean spherical equivalent refraction (SER; 0.96, 0.89, 0.57, and 0.23 diopters, D, respectively), mean lens thickness (3.50, 3.42, 3.41, and 3.45 mm, respectively), and mean lens power (23.6, 22.7, 21.8, and 21.2D, respectively), but significant trends of increasing mean anterior chamber depth (ACD; 3.00, 3.12, 3.16, and 3.15 mm, respectively), mean vitreous chamber depth (VCD; 16.0, 16.4, 16.6, and 16.8 mm, respectively), and mean axial length (22.5, 23.0, 23.2, 23.4 mm, respectively; all p for trend <0.001). CONCLUSIONS: Significant trends towards lower refractive power, increased prevalence of myopia, increased ACD, VCD, and axial length, and decreased lens power were associated with increasing age in these children. There were no significant changes in corneal thickness or corneal curvature.
Subject(s)
Eye/anatomy & histology , Refraction, Ocular/physiology , Adolescent , Anterior Chamber/anatomy & histology , Axial Length, Eye/physiology , Brazil/epidemiology , Child , Cross-Sectional Studies , Female , Humans , Lens, Crystalline/anatomy & histology , Lens, Crystalline/physiology , Male , Myopia/epidemiology , Vitreous Body/anatomy & histologySubject(s)
Refractive Errors/epidemiology , Adolescent , Age Distribution , Brazil/epidemiology , Child , Child, Preschool , Cross-Sectional Studies , Educational Status , Female , Humans , Male , Prevalence , Sex Distribution , Visual AcuitySubject(s)
Adolescent , Child , Child, Preschool , Female , Humans , Male , Refractive Errors/epidemiology , Age Distribution , Brazil/epidemiology , Cross-Sectional Studies , Educational Status , Prevalence , Sex Distribution , Visual AcuityABSTRACT
PURPOSE: To determine the association between language and number of citations of ophthalmology articles published in Brazilian journals. METHODS: This study was a systematic review. Original articles were identified by review of documents published at the two Brazilian ophthalmology journals indexed at Science Citation Index Expanded - SCIE ["Arquivos Brasileiros de Oftalmologia (ABO)" and "Revista Brasileira de Oftalmologia (RBO)"]. All document types ("articles" and "reviews") listed at SCIE in English (English Group) or in Portuguese (Portuguese Group) from January 1, 2008 to December 31, 2009 were included, except: "editorial materials"; "corrections"; "letters"; and "biographical items". The primary outcome was the number of citations through the end of second year after publication date. Subgroup analysis included likelihood of citation (cited at least once versus no citation), journal, and year of publication. RESULTS: The search at the web of science revealed 382 articles [107 (28%) in the English Group and 275 (72%) in the Portuguese Group]. Of those, 297 (77.7%) were published at the ABO and 85 (23.3%) at the RBO. The citation counts were statistically significantly higher (P<0.001) in the English Group (1.51 - SD 1.98 - range 0 to 11) compared with the Portuguese Group (0.57 - SD 1.06 - range 0 to 7). The likelihood citation was statistically significant higher (P<0.001) in the English Group (70/107 - 65.4%) compared with the Portuguese Group (89/275 - 32.7%). There were more articles published in English at the ABO (98/297 - 32.9%) than at the RBO (9/85 - 10.6%) [P<0.001]. There were no significant difference (P=0.967) at the proportion of articles published in English at the years 2008 (48/172 - 27.9%) and 2009 (59/210 - 28.1%). CONCLUSION: The number of citations of articles published in Portuguese at Brazilian ophthalmology journals is lower than the published in English. The results of this study suggest that the editorial boards should strongly encourage the authors to adopt English as the main language in their future articles.
Subject(s)
Editorial Policies , Language , Ophthalmology/statistics & numerical data , Periodicals as Topic/statistics & numerical data , Bibliometrics , Brazil , Humans , Journal Impact FactorABSTRACT
PURPOSE: To determine the association between language and number of citations of ophthalmology articles published in Brazilian journals. METHODS: This study was a systematic review. Original articles were identified by review of documents published at the two Brazilian ophthalmology journals indexed at Science Citation Index Expanded - SCIE ["Arquivos Brasileiros de Oftalmologia (ABO)" and "Revista Brasileira de Oftalmologia (RBO)"]. All document types ("articles" and "reviews") listed at SCIE in English (English Group) or in Portuguese (Portuguese Group) from January 1, 2008 to December 31, 2009 were included, except: "editorial materials"; "corrections"; "letters"; and "biographical items". The primary outcome was the number of citations through the end of second year after publication date. Subgroup analysis included likelihood of citation (cited at least once versus no citation), journal, and year of publication. RESULTS: The search at the web of science revealed 382 articles [107 (28%) in the English Group and 275 (72%) in the Portuguese Group]. Of those, 297 (77.7%) were published at the ABO and 85 (23.3%) at the RBO. The citation counts were statistically significantly higher (P<0.001) in the English Group (1.51 - SD 1.98 - range 0 to 11) compared with the Portuguese Group (0.57 - SD 1.06 - range 0 to 7). The likelihood citation was statistically significant higher (P<0.001) in the English Group (70/107 - 65.4%) compared with the Portuguese Group (89/275 - 32.7%). There were more articles published in English at the ABO (98/297 - 32.9%) than at the RBO (9/85 - 10.6%) [P<0.001]. There were no significant difference (P=0.967) at the proportion of articles published in English at the years 2008 (48/172 - 27.9%) and 2009 (59/210 - 28.1%). CONCLUSION: The number of citations of articles published in Portuguese at Brazilian ophthalmology journals is lower than the published in English. The results of this study suggest that the editorial boards should strongly encourage the authors to adopt English as the main language in their future articles.
OBJETIVO: Determinar a associação entre a língua e o número de citações de artigos publicados em periódicos de oftalmologia brasileiros. MÉTODOS: Este estudo foi uma revisão sistemática. Artigos originais foram identificados a partir da revisão dos documentos publicados nos dois periódicos de oftalmologia brasileiros indexados no Science Citation Index Expanded - SCIE ["Arquivos Brasileiros de Oftalmologia (ABO)" e "Revista Brasileira de Oftalmologia (RBO)"]. Todos os tipos de documentos ("artigos" e "revisões") listados no SCIE em inglês (Grupo Inglês) ou em português (Grupo Português), de 1º de janeiro de 2008 a 31 de dezembro de 2009, foram incluídos, exceto: "editoriais"; "correções"; "cartas"; e "biografias". O desfecho primário foi o número de citações até o segundo ano após a data de publicação. Análise de subgrupo incluiu probabilidade de citação (citado pelo menos uma vez contra nenhuma citação), periódico e ano da publicação. RESULTADOS: A pesquisa na Web of Science revelou 382 artigos [107 (28%) no Grupo Inglês e 275 (72%) no Grupo Português]. Destes, 297 (77,7%) foram publicados na ABO e 85 (23,3%) na RBO. O número de citações foi significativamente maior (P<0,001) no Grupo de Inglês (1,51 - DP 1,98 - faixa 0 to 11) em comparação com o Grupo Português (0,57 - DP 1,06 - faixa 0 to 7). A probabilidade de citação foi estatisticamente superior (P<0,001) no Grupo de Inglês (70/107 - 65,4%) comparado com o Grupo Português (89/275 - 32,7%). Havia mais artigos publicados em Inglês na ABO (98/297 - 32,9%) do que no RBO (9/85 - 10,6%) [P<0,001]. Não houve diferença significativa (P=0,967) na proporção de artigos publicados em Inglês nos anos de 2008 (48/172 - 27,9%) e 2009 (59/210 - 28,1%). CONCLUSÃO: O número de citações de artigos publicados em Português em periódicos brasileiros de oftalmologia é menor do que o publicado em Inglês. Os resultados deste estudo sugerem que os conselhos editoriais devem incentivar fortemente os autores a adotar o Inglês como língua principal em seus artigos futuros.
