This map shows the geographic impact of R Okamura's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by R Okamura with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R Okamura more than expected).
This network shows the impact of papers produced by R Okamura. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by R Okamura. The network helps show where R Okamura may publish in the future.
Co-authorship network of co-authors of R Okamura
This figure shows the co-authorship network connecting the top 25 collaborators of R Okamura.
A scholar is included among the top collaborators of R Okamura based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with R Okamura. R Okamura is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Matsumoto, Ken’ichi, Ryuji Kamata, Naoki Nishino, et al.. (1994). Suppression of polymorphonuclear leucocyte chemotaxis by Pseudomonas aeruginosa elastase in vitro: a study of the mechanisms and the correlation with ring abscess in pseudomonal keratitis.. PubMed. 75(6). 441–51.13 indexed citations
Isashiki, Yasushi, M. Nakagawa, Kenji Kitahara, et al.. (1992). Nonfamilial and unusual cases of Leber's hereditary optic neuropathy identified by mitochondrial DNA analysis.. PubMed. 36(2). 197–204.4 indexed citations
8.
Okamura, R, et al.. (1988). [Mercury content in the lens of rats receiving in methylmercury].. PubMed. 92(6). 1044–7.1 indexed citations
9.
Okamura, R, et al.. (1988). Quantitative study of characteristic aqueous humor transferrin, serum transferrin and desialized serum transferrin in aqueous humor.. PubMed. 32(3). 268–74.12 indexed citations
10.
Okamura, R, et al.. (1987). Comparative study of native proteins in aqueous humor and serum--detection of characteristic aqueous humor proteins.. PubMed. 31(2). 235–48.19 indexed citations
11.
Okamura, R, et al.. (1986). In vitro system of corneal endothelium.. PubMed. 30(3). 233–7.3 indexed citations
12.
Inada, K, Hiroyuki Baba, & R Okamura. (1985). Studies of human tear proteins: 4. Analysis by crossed immunoelectrophoresis of tears in various diseases.. PubMed. 29(2). 212–21.4 indexed citations
Ishikawa, S., R Okamura, & Kazuo Mukuno. (1979). [A simple grating test for contrast sensitivity (Arden grating test) with Minamata disease (author's transl)].. PubMed. 83(4). 336–43.4 indexed citations
17.
Okamura, R, et al.. (1974). [Pathology of the occipital white matter of Minamata disease (2), especially the passing route of the internal sagittal stratum in prolonged and chronic cases].. PubMed. 78(10). 1045–58.2 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.