Comment on: Trends in research related to high myopia from 2010 to 2019: a bibliometric and knowledge mapping analysis

Dear Editor,

Zhangrecently published a bibliometric paper entitled “Trends in research related to high myopia from 2010 to 2019: A bibliometric and knowledge mapping analysis”. The authors mentioned in section Data Source and Research Strategy that “we retrieved WoSCC (https://webofknowledge.com/) in the Science Citation Index Expanded (SCIE) database online as data source”.

有关于不同指标辅助诊断早期肾病的研究并不少见，从传统的肾功能、比值到结构损伤标志物，学术界一直都致力于寻找具有特异性的标志物。但是肾脏结构、功能非常复杂，蛋白排泄本身机制也非常复杂，糖尿病患者早期肾损害发生的涉及的血管段并不完全清楚，同时存在个体差异，这可能会影响特异性的指标诊断价值，联合多种的特异性标志物进行诊断是大势所趋[3]。

Web of Science Core Collection includes

Web of Science Core Collection: Citation Indexes

1) Science Citation Index Expanded (SCI-EXPANDED)--1900-present;

2) Social Sciences Citation Index (SSCI)--1900-present;

8) Emerging Sources Citation Index (ESCI)--2015-present;

To give you a quotation I still need to know below information：

7) Book Citation Index–Social Sciences & Humanities (BKCISSH)--2005-present;

It is not appropriate to use the database directly without bibliometric treatment. It is impossible to know number of publications in 2019 in the Web of Science Core Collection on 01 January 2020. The authors mentioned search keywords:“high myopia” and “pathological myopia”. In fact, the authors used high myopia or pathological myopia that means high and myopia or pathological and myopia. These search keywords are inappropriate for “Trends in research related to high myopia”.

6) Book Citation Index–Science (BKCI-S)--2005-present;

第一，低估了学生的数学认知水平，这在两个课题数学任务的布置与实施中都有较为明显的体现.这不仅表现在张老师在布置数学任务时，低认知水平的任务多于高认知水平的任务，而且表现在，高认知水平的任务在教学的展开过程中无一例外地降为低认知水平的任务.此外，还表现在对低认知水平的任务，他也采取一些措施进一步降低任务的认知要求.如，张老师在第一个课题的第一、二次教学中布置的7个数学任务有6个属于低认知要求水平的，第二个课题的第一、二次教学中布置的7个数学任务有4个属于低认知要求水平的.

4) Conference Proceedings Citation Index-Science (CPCI-S)--1990-present;

3) Arts & Humanities Citation Index (A&HCI)--1975-present;

Web of Science Core Collection is designed mainly for researchers to find published literature, but not for bibliometric studies. It is unsuitable to use all these different types and levels of databases. For example, ESCI complements the highly selective indexes by providing earlier visibility for sources under evaluation as part of the rigorous journal selection process of SCI-EXPANDED, SSCI, and A&HCI.In addition, no high myopia English articles can be found in A&HCI, CPCI-SSH, BKCI-SSH, CCR-EXPANDED, and IC.In the same section, the authors noticed that “Data were collected on January 1, 2020. “High myopia” and “Pathological myopia” were retrieved as the topic terms, the time span was“from 2010 to 2019”, the document type was restricted to“article”, and the language was limited to “English only.” In the section Annual Distribution of Publications, the authors presented that “By WoSCC based analysis, 3544 documents on HM from 2010 to 2019 has been collected”.

1) Current Chemical Reactions (CCR-EXPANDED);

2) Index Chemicus (IC).

Web of Science Core Collection: Chemical Indexes

5) Conference Proceedings Citation Index-Social Sciences &Humanities (CPCI-SSH)--1990-present;

数学在生活中的应用非常广泛，所以数学对社会发展有大的作用。小学数学教育中培养学生核心素养要注重理论和实践相结合，在不断探索的过程中培养学生的社会责任感。学生是祖国未来的希望，是我们发展的新生力量，重视学生核心素养的培养也就是希望学生能够更好地将所学到的知识用到生活中，为社会发展做一份贡献。数学是一门实用性学科，只有将理论和实践结合起来才能发挥数学的作用，学生在学习数学的过程中还要注重寻找规律，这样才能学好数学。

Using “high myopia” and “pathological myopia” as search keywords in terms of topic (including title, abstract, author keywords, and KeyWords Plus) within the publication year with a limit of 2010 to 2019. A total of 1826 and 1952 English articles were published in the SCI-EXPANDED and the Web of Science Core Collection, respectively. A big difference was found from the 3544 documents in the original paper.

It was pointed out that the documents, which can only be searched out by KeyWords Plus, were more likely to be irrelevant to the research topic. Ho’s group was the first to propose “front page” as a filter to improve the bibliometric methodwhich covers only documents with searching keywords in their “front page”, including only the article title,the abstract, and the author keywords. By using the “front page” filter, it will avoid introducing unrelated articles for analysis. After using the filter of “front page”, 1405 and 1508 English articles were found in the SCI-EXPANDED and the Web of Science Core Collection, respectively. In total, 412 articles (29% of 1405 articles) and 444 articles (29% of 1508 articles) had no any searching words: “high myopia” and“pathological myopia” in the articles’ title, abstract, and author keywords, for example, highly cited articles entitled “Macular choroidal thickness and volume in normal subjects measured by swept-source optical coherence tomography”; “Prevalence and progression of myopic retinopathy in Chinese adults: The Beijing eye study”; and “The development of an instrument to measure quality of vision: The Quality of Vision (QoV)questionnaire”.

Zhangpublished “Trends in research related to high myopia from 2010 to 2019: A bibliometric and knowledge mapping analysis” using inappropriate search strategy and search keywords. This may lead to misleading readers of the journal.

炼苗方法可以直接影响烟叶后期的产量。因为炼苗可提高烟苗的茁壮程度、整齐程度，使大田烟株株高、茎围、叶数得到大大提高，达到增产的效果［3］。

已经宣布Boise Cascade公司的Boise、Idaho已经同意将其La Grande刨花板厂出售给Woodgrain Millwork。

None.