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”.

有關于不同指標輔助診斷早期腎病的研究并不少見，從傳統(tǒng)的腎功能、比值到結構損傷標志物，學術界一直都致力于尋找具有特異性的標志物。但是腎臟結構、功能非常復雜，蛋白排泄本身機制也非常復雜，糖尿病患者早期腎損害發(fā)生的涉及的血管段并不完全清楚，同時存在個體差異，這可能會影響特異性的指標診斷價值，聯(lián)合多種的特異性標志物進行診斷是大勢所趨[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，低估了學生的數(shù)學認知水平，這在兩個課題數(shù)學任務的布置與實施中都有較為明顯的體現(xiàn).這不僅表現(xiàn)在張老師在布置數(shù)學任務時，低認知水平的任務多于高認知水平的任務，而且表現(xiàn)在，高認知水平的任務在教學的展開過程中無一例外地降為低認知水平的任務.此外，還表現(xiàn)在對低認知水平的任務，他也采取一些措施進一步降低任務的認知要求.如，張老師在第一個課題的第一、二次教學中布置的7個數(shù)學任務有6個屬于低認知要求水平的，第二個課題的第一、二次教學中布置的7個數(shù)學任務有4個屬于低認知要求水平的.

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;

數(shù)學在生活中的應用非常廣泛，所以數(shù)學對社會發(fā)展有大的作用。小學數(shù)學教育中培養(yǎng)學生核心素養(yǎng)要注重理論和實踐相結合，在不斷探索的過程中培養(yǎng)學生的社會責任感。學生是祖國未來的希望，是我們發(fā)展的新生力量，重視學生核心素養(yǎng)的培養(yǎng)也就是希望學生能夠更好地將所學到的知識用到生活中，為社會發(fā)展做一份貢獻。數(shù)學是一門實用性學科，只有將理論和實踐結合起來才能發(fā)揮數(shù)學的作用，學生在學習數(shù)學的過程中還要注重尋找規(guī)律，這樣才能學好數(shù)學。

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.

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None.