Systematic bibliometric analysis of research hotspots and trends on the application of premium IOLs in the past 2 decades

AIM: To analysis of research hotspots and trends on the application of premium intraocular lens (PIOLs) in the past 2 decades. METHODS: The literature search was performed on the Web of Science and included PIOLs studies published between January 2000 and December 2022. The retrieved literature was collated and analyzed by R-tool’s Bibliometrix package, CitNetExplorer, CiteSpace and other software. RESULTS: A total of 1801 articles about PIOLs were obtained, most of which were published in Spain and the United States. The organization that published the most articles was the University of Valencia in Spain. Alió JL, and Montés-Micó R, from Spain were the most influential authors in this field. The Journal of Cataract and Refractive Surgery and Journal of Refractive Surgery were the core journals for this field; the top 10 cited articles mainly focus on postoperative satisfaction with multifocal intraocular lens (IOLs) and postoperative results of toric IOLs. Through the keyword analysis, we found that trifocal IOLs, astigmatism and extended depth of focus (EDoF) IOLs are the most discussed topics at present, and the importance of astigmatism and the clinical application of the new generation of PIOLs are the emerging research trends. CONCLUSION: Bibliometric analysis can effectively help to identify multilevel concerns in PIOLs research and the prevailing research trends in the realm of PIOLs encompass the adoption of EDoF IOLs, trifocal IOLs, and their respective Toric models.     

The 100 most influential papers about cataract surgery: a bibliometric analysis

AIM: To identify the 100 most cited papers in cataract surgery, we performed a comprehensive bibliometric analysis basing on the literature search on the Thomson Reuters Web of Knowledge. METHODS: The number of citations, including the total citations, latest 5y citations and average citation number per year (ACY), authorship, year of publication, major topics, journal of publication, country and institution of origin of each paper were recorded and then analyzed. Pearson’s correlation analysis was conducted to evaluate the correlation between the published year and the number of citations. The correlation between journal’s impact factor (IF) and number of citations was assessed as well. RESULTS: The most cited paper was the classic paper done by the European Society of Cataract & Refractive Surgeons (ESCRS) group. This paper focused on the topic of endophthalmitis. Not only the most cited papers originated from the USA, but also some American institutions like Johns Hopkins University, Harvard Medical School, etc. had the most citations. Pearson’s correlation analysis indicated that the latest 5y citations and ACY were significantly related with the published year (5y citations: r=0.615, P<0.001; ACY: r=0.657, P<0.001), whereas no association between the total number of citations and published year was found (r=0.045). Moreover, the IFs of journals were found to have no significant effect on the number of total citations. CONCLUSION: To our knowledge, this is the first study on the most influential papers in cataract surgery after a comprehensive research of relevant literatures. The present work may provide us concise information concerning the development history of cataract surgery over the past 66y.     

中华眼科杂志2000至2009年刊出论文的影响因子和被引频次分析

目的 从影响因子及文献引证角度研究中华眼科杂志的学术水平和影响力.方法 依据<中国科技期刊引证报告>(CJCR)提供的影响因子数据,并按照文献计量学的方法,利用<中国生物医学期刊引文数据库>(CMCI/CMCC整合版)的资料和数据,对中华眼科杂志载文被CMCI/CMCC来源期刊引用的情况进行统计分析和评价.结果 中华眼科杂志自2000年至2008年的影响因子分别为0.573、0.863、0.702、0.745、0.877、1.031、0.807、0.875、0.533.2000年至2009年近十年共刊出论文2485篇,被引用1562篇,总被引频次为9294次,总被引率为62.86%.按被引文章作者地区划分,广东、北京、山东和上海地区被引频次最高,分别为2661、2200、926、901次,而按被引文章作者单位划分,中山大学中山眼科中心发表论文(277篇)、被引篇数(201篇)和被引频次(2193次)以及首都医科大学北京同仁眼科中心发表论文(197篇)、被引篇数(106篇)和被引频次(507次)位居前列.结论 中华眼科杂志的影响因子较稳定,并位居国内眼科杂志之首,同时载文被引频次较高,证明了该期刊是我国眼科学研究领域的主要核心期刊,有着高水平的论文质量和较强的影响力.

Abstract：

Objective From the point of impact factor and citation to evaluate the academic level and influence of Chinese Journal of Ophthalmology ( CJO). Methods Using the impact factor (IF) data provided by China Science and Technology Journal Citation Reports ( CJCR),and the information of Chinese Medical citation Index (CMCI/CMCC integrated version),the citations from C JO were collected and analyzed with bibliometric methods. Result From 2000 to 2008,the IF of CJO were 0. 573,0. 863,0. 702,0. 745,0. 877,1. 031,0. 807,0. 875 and 0. 533. From 2000 to 2009,2485 papers were published in CJO,1562 of them were referenced (9294 times). The frequency of total citation rate was 62. 86%. The region with the highest citation frequency was Guangdong ( 2661 times),followed by Beijing ( 2200 times),Shandong (926 times) and Shanghai(901 times). As to the institution,the top of rank was Zhongshan Ophthalmic Center of Sun Yat-Sen University (with 277 papers,201 citations and 2193 times of citation frequency) and Beijing Tongren Eye Center ( with 197 papers,106 citations and 507 times of citation frequency). Conclusion The IF of CJO was stable,and ranked first in domestic academic of Ophthalmology. Meanwhile,it had a higher frequency of Citation,which shows that CJO has high quality and strong influence,and become one of main core ophthalmology journals in China.     

Scientometric analysis and mapping of 20 years of glaucoma research

AIM: To provide a scientometric analysis in the field of glaucoma. METHODS: A bibliometric method was used to obtain a view of the scientific production in field of glaucoma by data extracted from the Institute for Scientific Information (ISI) from 1993 to 2013. Specific parameters were retrieved from the ISI. Articles about glaucoma were analyzed regarding the topics’ structure, history, and document relationships using HistCite software. Also, the trends in the most influential publications and authors were analyzed. RESULTS: The number of articles was constantly increasing, and most highly cited articles addressed clinical and epidemiologic topics in this field. During the past three years, there has been a trend towards genomic research studies and also more molecular translational research. CONCLUSION: This was the first scientometric report on glaucoma, analyzing the characteristics of papers and the trends in scientific production. A constant increase was observed in the number of papers, while the subject of papers had a shift in the past three years towards genomic research studies.     

Retraction Notice

Retraction:"Topographic distribution features of the choroidal and retinal nerve fiber layer thickness in Wenzhou schoolaged children" by Wei-Qin Liu, Dan-Dan Wang, Xiao-Xia Yang, Yan-Yan Pan, Xue Song, Yu-Shan Hou, Chen-Xiao Wang published on International Journal of Ophthalmology 2020;13(3):466-473.This article has been retracted by the authors. The article involves in errors in statistical analysis of data. In the interest of scientific integrity, we regret to announce that this article has to be retracted. We apologize to the readership of International Journal of Ophthalmology.     

The 100 most influential articles in myopia:a bibliometric analysis

AIM:To identify and characterize the 100 most influential articles in the field of myopia over the last decades.METHODS:Articles on myopia published between January 1975 and March 2020 were searched through the Web of Science Core Collection database.Two independent authors reviewed and determined the 100 most cited articles.The characteristics of each eligible article were recorded,including authors,institutions,countries,journals,publication date,total citations(TCs),annual citations(ACs),research focus and article type.RESULTS:The top 100 most influential articles were published between 1983 and 2016,with 1999 as the most prolific year.The mean number of TCs was 288(range:193-537)and the mean number of ACs was 19(range:7-109).Treatment and epidemiology of myopia were the most important research focus.These articles were published in 21 journals led by Ophthalmology(29%)followed by Investigative Ophthalmology&Visual Science(23%).The number of ACs for articles published in the last ten years was significantly higher than that for the other most-cited articles(44 vs 16,Mann-Whitney U test P<0.01).There is no difference in the number of TCs between original articles and review articles,while the number of ACs for review articles was significantly higher than that for original articles(22 vs 17,Mann-Whitney U test P<0.05).CONCLUSION:This bibliometric analysis can provide us with concise information about the development trend of research in the field of myopia in the past few decades,and provide an important reference for researchers to guide future research.     

Ocular bacterial infections at a tertiary eye center in China: a 5-year review of pathogen distribution and antibiotic sensitivity

AIM: To provide statistical evidence for the use of antibiotics in ophthalmology by assessing the distribution and antibiotic sensitivity of bacterial isolates from ocular specimens with suspected microbial infections. METHODS: This study applied a retrospective analysis of 3690 bacterial isolates from ocular specimens, which were obtained from the conjunctiva, cornea, aqueous humor, vitreous body, and other ocular sites of the patients at Shandong Eye Institute in northern China from January 2013 to December 2017. The parameters assessed mainly included the distribution of isolated bacteria and the results of susceptibility tests for antibiotics. In the analysis of antibiotic sensitivities, the bacteria were divided into four groups according to gram staining, and statistical methods were used to compare their antibiotic sensitivities. RESULTS: Among the 3690 isolated bacterial strains, Staphylococcus epidermidis (2007, 54.39%) accounted for the highest proportion. As for the total isolates, their sensitivity rate to gatifloxacin was up to 90.01%, with four types of gram-stained bacteria being all highly sensitive to it, but their sensitivity rate to levofloxacin was only 51.91%. The sensitivity rate of gram-negative bacilli (G-B) to levofloxacin was 83.66%, significantly higher than the other three types of gram-stained bacteria (P<0.05). Gram-positive cocci (G+C, 97.95%) and gram-positive bacilli (G+B, 97.54%) were more sensitive to vancomycin than gram-negative cocci (G-C, 70.59%) and G-B (68.57%; P<0.05). For fusidic acid, the sensitivity rates of G+C (89.83%) and G+B (73.37%) were significantly higher than that of G-B (29.83%; P<0.05). The gram-negative bacteria’s sensitivity rate to cefuroxime was as low as 59.25%, but only G-B was less sensitive to cefuroxime (57.28%), while G-C was still highly sensitive (89.29%). The sensitivity rate of gram-positive bacteria to moxifloxacin was as high as 80.28%, but only G+C was highly sensitive to moxifloxacin (81.21%), while G+B was still less sensitive (32.00%). CONCLUSION: Staphylococcus epidermidis is the predominant isolate in all ocular specimens with bacteria. Gatifloxacin is more suitable for topical prophylactic use than levofloxacin in ophthalmology when necessary. Vancomycin and fusidic acid both have better effects on gram-positive bacteria than gram-negative bacteria. More accurate antibiotic sensitivity analysis results can be obtained when a more detailed bacterial classification and more appropriate statistical methods are performed.     

[In Press] The 100 most influential papers about cataract surgery: a bibliometric analysis

AIM: To identify the 100 most cited papers in cataract surgery, we performed a comprehensive bibliometric analysis basing on the literature search on the Thomson Reuters Web of Knowledge. METHODS: The number of citations, including the total citations, latest 5y citations and average citation number per year (ACY), authorship, year of publication, major topics, journal of publication, country and institution of origin of each paper were recorded and then analyzed. Pearson''s correlation analysis was conducted to evaluate the correlation between the published year and the number of citations. The correlation between journal''s impact factor and number of citations was assessed as well. RESULTS: The most cited paper was the classic paper done by the European Society of Cataract & Refractive Surgeons (ESCRS) group. This paper focused on the topic of endophthalmitis. Not only the most cited papers originated from the USA, but also some American institutions like Johns Hopkins University, Harvard Medical School etc. had the most citations. Pearson’s correlation analysis indicated that the latest 5y citations and ACY were significantly related with the published year (5y citations: r=0.615, P<0.001; ACY: r=0.657, P<0.001), whereas no association between the total number of citations and published year was found (r=0.045). Moreover, the impact factors (IF) of journals were found to have no significant effect on the number of total citations. CONCLUSION: To our knowledge, this is the first study on the most influential papers in cataract surgery after a comprehensive research of relevant literatures. The present work may provide us concise information concerning the development history of cataract surgery over the past 66y.     

Old canalicular laceration repair: a retrospective study of the curative effects and prognostic factors

AIM: To investigate the epidemiology and surgical outcomes of old canalicular laceration and analyze the variables impacting on the prognosis of reparation. METHODS: A retrospective review of all old canalicular laceration repairs from Jan. 1, 2008 to Dec. 30, 2015 was performed. Analyzed data included demographics, mechanisms of injury, the time from injury to repair, causes for delayed repair, old associated injuries, the types of surgery, and the effects of repair using canaliculus anastomosis combined with bicanalicular stent intubation. RESULTS: Totally 148 patients with old canalicular laceration received surgical repair and were enrolled. The mean age at presentation was 32.52 years old (ranged from 3 to 63 years old). The 110 patients (74.32%) were male and 127 patients (85.81%) were adults (≥18 years old). The old upper, lower, and bicanalicular lacerations were found in 5 (3.38%), 39 (26.35%), and 104 patients (70.27%), respectively. The mechanism of old injury was primarily due to motor vehicle accidents (n=53, 35.81%). The mean time from injury to repair was 43.61mo (ranged from 1 to 360mo). Associated old ocular and orbit injuries were found in 65 patients (43.92%), and chronic dacryocystitis in 18 patients (12.16%). The main cause of delayed repair was that doctors or patients didn’t pay attention to the canalicular laceration because of the concurrent severe injuries (n=71, 47.97%). Totally 136 patients (91.89%) with old canalicular laceration underwent canaliculus anastomosis combined with bicanalicular stent intubation. In all of them, 20 patients (13.51%) were combined with dacryocystorhinostomy. In these cases, 132 patients (97.06%) attained anatomic success, 121 patients (88.97%) reported no epiphora (functional success), 11 patients (8.09%) reported significant epiphora anesis (functional improvement), and 4 (2.94%) reported no significant anesis (functional failure). Rates of anatomic success and functional success were significantly correlated with different canaliculus involved. However, rates of anatomic success and functional success were not significantly affected by the time from injury to repair. CONCLUSION: The canalicular anastomosis combined with bicanalicular stent intubation could act as an effective therapeutics for old canalicular laceration.     

Bifunctional Effect of Human IFN-γ on Cultured Human Fibroblasts from Tenon's Capsule

Purpose: To study the effect of human IFN-r on in vitro cultured human fibroblasts from Tenon's capsuleMaterials and methods: The effect of different concentrations of human IFN-r and mitomycin-C (MMC), 5-fluorouracil (5-Fu) on cultured human Tenon's capsule fibroblasts (HTCF) was measured using a MTT [3-(4, 5-dimethylthiazo-2-yl)] -2, 5-diphenyltetrazolium bromide; Thiazolyl blue) colorimetric assay. The results were analyzed using ANOVA of the statistical package for social sciences (SPSS) 9. 0 version. The difference was considered to be significant if P < 0. 05. Results: The effects of MMC and 5-Fu on the growth of HTCF were negative, while the effects of IFN-r on tne growth of HTCF were both negative (102 - 104 units/ml in two experiments) and positive (106, 105, 10 units/ml in two experiments) . The inhibition rate of MMC ranged from 5. 73% to 46. 9%, which was similar to the inhibition rate of 5-Fu ranged from 12. 49% to 38. 92% ( P = 0. 351) . The inhibition rate of IFN-'Y in two experiments was     

中华眼科杂志1995至2004年论文核心作者分析

目的 探讨中华眼科杂志载文作者及其机构、地区分布情况,了解科研人员合作类型及其特点,确定核心作者、核心机构及核心地区。方法采用文献计量学方法,对该刊1995至2004年论文作者发文量、合作情况、地区分布、系统分布、核心作者、论文多产单位等进行统计分析。结果该刊10年发文2143篇,其中发文1篇作者912人,占第一作者人数的70．59％;作者合作论文1853篇,合作率86、47％,合作度3．56;独著论文290篇（13．53％）。高校发文246篇（11、48％）,科研院所发文176篇（8．21％）,医学院校附属医院发文969篇（45．22％）,省、直辖市、自治区医院发文423篇（19．74％）。核心作者82人,发文553篇（25．81％）;论文多产单位20个,发文1016篇（47．41％）,其中北京地区发文574篇（26．78％）居第一位。结论该刊作者分布范围广,合作率高,并拥有一支实力雄厚、对刊物影响力较大、学术造诣较深的活跃核心作者队伍。     

《眼视光学杂志》1999～2008年载文分析

目的分析《眼视光学杂志》1999～2008年十年我文情况,以评价其载文质量及学术水平,为杂志的进一步发展提供理论依据。方法采用文献计量学方法．对1999～2008年《眼视光学杂志》刊载的各类文章总数、栏目设计、文章来源分布、科研基金论文情况、作者单位、作者署名、作者职称等情况进行逐项统计和分析。结果1999～2008年《眼视光学杂志》共出版10卷46期,刊载论文1140篇,设有11个栏目．每期平均发文数为24．8篇,每篇平均页数为2．75页。论文来自国内30个省、市、自治区和台湾、香港地区,以及国外多个国家。各种科研基金资助项目的论文共273篇,占总文章数的23．9％。作者主要来自于浙江、上海、广东、北京等沿海或经济发达地区的高校、科研和医疗机构,具有较高的学历和职称。每篇论文署名作者1～11人,合著度为3．4人／篇,合著率达89．4％。结论《眼视光学杂志》具有较高的学术价值和较大的影响力,但作者群分布不太平衡,学术影响力有待进一步提高．杂志水平尚需进一步提升。     

2005年五种眼科期刊基金资助论文统计分析

目的研究我国5种中文眼科期刊基金资助论文情况,揭示目前眼科领域的基金资助论文特点及科研状况。方法选择2005年出版的中华眼科杂志、眼外伤职业眼病杂志、眼科研究、中国实用眼科杂志、中华眼底病杂志共5种国内公开发行的眼科期刊,采用引文计量分析方法对基金资助论文数量、基金资助论文率、基金资助论文的地区分布及研究方向、基金资助论文的作者合作度、基金资助论文获基金资助项目数量及其在栏目中的分布等进行分析探讨。结果2005年5种眼科期刊所载基金资助论文率为12．72％（222／1745）,其中国家级为4．70％,省部级为4．81％,其他基金为3．21％。基金资助论文作者合作度最高为5．21,基金资助论文产出量以广东省最高,占31．98％（71／222）。各期刊基金资助论文均以获单项基金资助为主,为149项（67．12％）。基金资助论文研究主要集中于视网膜（51／222,22．97％）、角膜（38／222,17．12％）及晶状体领域（25／222,11．26％）。结论5种眼科期刊发表基金资助论文数量、级别均较往年有所提高,但与其他专业领域相比还有一定差距,尚待提高。     

中华眼科杂志2001至2006年作者发表论文及其被引情况分析

目的从文献引证角度透视中华眼科杂志的作者发表论文和被引情况。方法依据《中国生物医学期刊引文数据库》（CMCI）,采用文献计量方法对中华眼科杂志作者发表论文和被引情况进行统计分析及评价。结果中华眼科杂志2001至2006年间,共有990名第一著者发表论文1513篇,其中来自479人的705篇论文被引用2611次。发表1篇论文的作者有748人,占第一作者人数的75．6％,发表4篇以上的核心作者50人,发表论文325篇（21．5％）。按作者地区划分,北京地区发表论文412篇（27．2％）,被引666次,居首;广东地区发表论文235篇（15．5％）被引632次,居第二位。按作者单位划分,17个论文多产单位发表论文851篇（55．6％）,被引1611次（61．7％）;其中中山大学中山眼科中心发表论文198篇,被引526次,居机构排名首位;首都医科大学北京同仁眼科中心发表论文140篇,被引237次,居第二位。结论中华眼科杂志所载文献被引用比例较高,拥有一支实力雄厚、对刊物影响力较大、学术造诣较深的活跃核心作者队伍,作者群地区分布范围广,发表论文较多的地区是北京、广东、上海。     

中华眼科杂志1999至2004年载文被引分析研究

目的从文献引证的角度透视中华眼科杂志的学术水平和期刊质量。方法依据《中国生物医学期刊引文数据库》（CMCI）提供的资料和数据,采用文献计量学方法,对中华眼科杂志载文被CMCI来源期刊引用的情况进行统计分析及评价。结果单篇平均被引次数为4．17次,被引频次较高的论文数占载文量的多数。被引作者群分布在我国的32个省、直辖市、自治区,其中北京、广东、上海居前列。有354种期刊引用中华眼科杂志,被引率49．96％,自引率8．87％。结论中华眼科杂志所载论文质量和被引率均较高,已形成具有独立风格和特色且相对稳定的研究体系。该刊不仅是我国眼科学研究领域最重要的信息源之一,也是我国医学领域的主要核心期刊。     

中华眼科杂志2005至2009年刊出论文被引情况分析

目的利用文献计量学方法研究中华眼科杂志2005至2009年刊出论文的学术水平和期刊质量.方法依据<中国生物医学期刊引文数据库>(CMCI)提供的资料和数据,采用文献计量学方法,对中华眼科杂志2005至2009年刊出论文被来源期刊引用的情况进行统计分析及评价.结果2005至2009年共刊出论文1358篇,共695篇被引2333次,篇均被引次数为3.36次.被引文章作者分布在我国的26个省、市、自治区以及我国香港、澳门,还有两篇被引文献的作者来自美国,其中北京、上海、广东、山东居前列,分别有202、93、82、69篇文章被引用.按被引文章作者单位划分,中山大学中山眼科中心被引频次(349次)排第一,首都医科大学北京同仁医院同仁眼科中心位居第二(265次).除本刊自引外,还被国际眼科杂志、眼科、中国实用眼科杂志等300多种期刊所引用.结论中华眼科杂志所载论文质量和被引率均较高,在我国眼科学研究领域具有较强的影响力.     

中华眼科杂志2002至2004年发表论文的第一作者及其单位统计分析

目的探讨在中华眼科杂志发表论文较多的眼科专业和非眼科专业的第一作者及其单位的分布。方法采用手工记录汇总的方法,统计分析2002年至2004年在中华眼科杂志发表论文较多的第一作者及其单位。结果中华眼科杂志3年共发表文章775篇。以第一作者发表文章≥5篇的作者共10人,79篇（10．19％）;第一作者单位发表文章≥10篇的共有20个单位,发文467篇（60．26％）。非眼科专业的第一作者单位18个,占载文中总单位量的2．32％,共发文25篇（3．23％）。结论在中华眼科杂志发表论文最多的作者分别为肖利华、谢立信及赵家良。发表论文最多的第一作者单位分别为中山大学中山眼科中心、首都医科大学北京同仁眼科中心及山东省眼科研究所;非眼科专业的第一作者单位为上海交通大学附属第一人民医院中心实验室。我国的眼科资源主要集中在大城市、大医院。     

《中华眼科杂志》载文被引用情况统计分析

目的：从文献引证的角度透视《中华眼科杂志》的学术水平和期刊质量。方法：依据《中国科技论文统计与引文分析数据库》（Chinese science and technology papers and citation database,CSTPC）,采用文献计量方法对《中华眼科杂志》载文被CSTPC来源期刊引用的情况进行统计分析及评价。结果：《中华眼科杂志》所载文献质量较高,作者群的地域分布范围较广,已形成具有独立风格和特色且相对稳定的研究体系。结论：《中华眼科杂志》不仅是我国眼科学研究领域最重要的信息资源之一,也是我国主要的医学核心期刊。     

中华眼科杂志2001至2004年载文分析

目的探讨中华眼科杂志的载文规律。方法利用文献计量学方法对中华眼科杂志刊载文献篇数、发文栏目、引文频率、基金资助、发表时滞等情况进行统计分析。结果中华眼科杂志2001至2004年共发表了926篇论文和16篇信息报道,共计942篇。集中刊载在24个栏目,载文的引文率达89．98％,获得基金资助的比率较其20世纪90年代有较大提高,获基金资助论文占全部发文数量的19．53％,论文发表时滞较长。结论中华眼科杂志的专业学术水平高,是国内眼科学研究领域的核心杂志。建议增加出版频率或增加版面。(中华眼科杂志,2005,41：652-655)