Koichi Nishitsuka

660 total citations
41 papers, 414 citations indexed

About

Koichi Nishitsuka is a scholar working on Ophthalmology, Radiology, Nuclear Medicine and Imaging and Neurology. According to data from OpenAlex, Koichi Nishitsuka has authored 41 papers receiving a total of 414 indexed citations (citations by other indexed papers that have themselves been cited), including 32 papers in Ophthalmology, 29 papers in Radiology, Nuclear Medicine and Imaging and 10 papers in Neurology. Recurrent topics in Koichi Nishitsuka's work include Retinal and Macular Surgery (18 papers), Glaucoma and retinal disorders (16 papers) and Intraocular Surgery and Lenses (10 papers). Koichi Nishitsuka is often cited by papers focused on Retinal and Macular Surgery (18 papers), Glaucoma and retinal disorders (16 papers) and Intraocular Surgery and Lenses (10 papers). Koichi Nishitsuka collaborates with scholars based in Japan, Sweden and Australia. Koichi Nishitsuka's co-authors include Hidetoshi Yamashita, Hiroyuki Namba, Paraskevi Heldin, Teiko Yamamoto, Helena Porsch, Spyros S. Skandalis, Eugenia Karousou, Ryo Kawasaki, Takamasa Kayama and Akira Sugano and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLoS ONE and Scientific Reports.

In The Last Decade

Koichi Nishitsuka

39 papers receiving 403 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Koichi Nishitsuka Japan 12 258 252 89 70 70 41 414
Julia Song United States 9 309 1.2× 201 0.8× 92 1.0× 62 0.9× 38 0.5× 23 474
Takeshi Naito Japan 12 428 1.7× 276 1.1× 92 1.0× 143 2.0× 17 0.2× 38 576
Robin Vann United States 11 363 1.4× 233 0.9× 111 1.2× 139 2.0× 43 0.6× 17 471
Peter Morgan-Warren United Kingdom 11 217 0.8× 127 0.5× 25 0.3× 156 2.2× 28 0.4× 27 442
Radwan Ajlan United States 11 241 0.9× 157 0.6× 24 0.3× 168 2.4× 20 0.3× 38 401
Ulrich Welge‐Luessen Germany 12 405 1.6× 296 1.2× 18 0.2× 146 2.1× 32 0.5× 22 551
Thomas Wecker Germany 14 594 2.3× 375 1.5× 25 0.3× 144 2.1× 102 1.5× 28 705
Mahshad Darvish-Zargar Canada 7 126 0.5× 68 0.3× 52 0.6× 83 1.2× 20 0.3× 13 292
Sergio Zaccaria Scalinci Italy 13 278 1.1× 166 0.7× 46 0.5× 152 2.2× 10 0.1× 31 502
Marcus Lim Singapore 13 645 2.5× 442 1.8× 94 1.1× 105 1.5× 14 0.2× 25 732

Countries citing papers authored by Koichi Nishitsuka

Since Specialization
Citations

This map shows the geographic impact of Koichi Nishitsuka'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 Koichi Nishitsuka with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koichi Nishitsuka more than expected).

Fields of papers citing papers by Koichi Nishitsuka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Koichi Nishitsuka. 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 Koichi Nishitsuka. The network helps show where Koichi Nishitsuka may publish in the future.

Co-authorship network of co-authors of Koichi Nishitsuka

This figure shows the co-authorship network connecting the top 25 collaborators of Koichi Nishitsuka. A scholar is included among the top collaborators of Koichi Nishitsuka 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 Koichi Nishitsuka. Koichi Nishitsuka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Namba, Hiroyuki, Naoyuki Maeda, Yutaka Kaneko, et al.. (2025). Prevalence of keratoconus and keratoconus suspect, and their characteristics on corneal tomography in a population-based study. PLoS ONE. 20(1). e0308892–e0308892. 1 indexed citations
2.
Tanaka, Takahiro, Koichi Nishitsuka, & Hiroto Obata. (2025). Differences in Ocular Biometry Between Short-Axial and Normal-Axial Eyes in the Elderly Japanese. Clinical ophthalmology. Volume 19. 187–197.
3.
4.
Namba, Hiroyuki, Naoyuki Maeda, Yutaka Kaneko, et al.. (2024). Associations of ocular anterior segment structures with sex and age: the Yamagata study (Funagata). Japanese Journal of Ophthalmology. 68(6). 751–763. 2 indexed citations
5.
Nishitsuka, Koichi, et al.. (2023). Efficacy of vitrectomy with air tamponade for rhegmatogenous retinal detachment: a prospective study. Scientific Reports. 13(1). 10790–10790. 5 indexed citations
6.
Nishitsuka, Koichi, et al.. (2022). Selection Criteria for Air Tamponade During Vitrectomy for Rhegmatogenous Retinal Detachment. SHILAP Revista de lepidopterología. 6 indexed citations
7.
Ohe, Rintaro, Yutaka Kaneko, Hiroyuki Namba, et al.. (2022). Utility of Liquid-Based Cytology and Cell Block Procedure Obtained by Vitrectomy to Diagnose Ocular Sarcoidosis–The Significance of Epithelioid Granuloma and Epithelioid Cells. Clinical ophthalmology. Volume 16. 3289–3296. 2 indexed citations
8.
Kaneko, Yutaka, Takanori Murakami, Koichi Nishitsuka, et al.. (2022). Effectiveness of Baricitinib in Refractory Seronegative Rheumatoid Arthritis and Uveitis: A Case Report. Frontiers in Medicine. 8. 764067–764067. 7 indexed citations
9.
Nishitsuka, Koichi, et al.. (2021). Surgical Outcomes of Rhegmatogenous Retinal Detachment with Different Peripheral Vitreous-Shaving Procedures. Clinical ophthalmology. Volume 15. 2197–2202. 3 indexed citations
10.
Nishitsuka, Koichi, et al.. (2021). Surgical outcomes after primary Baerveldt glaucoma implant surgery with vitrectomy for neovascular glaucoma. PLoS ONE. 16(4). e0249898–e0249898. 5 indexed citations
11.
Nishitsuka, Koichi, et al.. (2021). Peripheral Cystoid Degeneration Finding Using Intraoperative Optical Coherence Tomography in Rhegmatogenous Retinal Detachment. Clinical ophthalmology. Volume 15. 1183–1187. 3 indexed citations
12.
Nishitsuka, Koichi, Ryo Kawasaki, Keita Yamakiri, et al.. (2020). Preoperative factors to select vitrectomy or scleral buckling for retinal detachment in microincision vitrectomy era. Graefe s Archive for Clinical and Experimental Ophthalmology. 258(9). 1871–1880. 15 indexed citations
13.
Baba, Takayuki, Ryo Kawasaki, Keita Yamakiri, et al.. (2020). Visual outcomes after surgery for primary rhegmatogenous retinal detachment in era of microincision vitrectomy: Japan-Retinal Detachment Registry Report IV. British Journal of Ophthalmology. 105(2). 227–232. 22 indexed citations
14.
Nishitsuka, Koichi, et al.. (2015). A survey of vitreous cell components performed using liquid‐based cytology. Acta Ophthalmologica. 93(5). e386–e390. 7 indexed citations
15.
Nishitsuka, Koichi & Hidetoshi Yamashita. (2013). [Management of diabetic retinopathy and diabetic maculopathy in elderly patients with diabetes mellitus].. PubMed. 71(11). 2005–9. 1 indexed citations
16.
Nishitsuka, Koichi, et al.. (2011). Hyaluronan production and hyaluronan synthase expression in three human conjunctiva-derived cell strains. Japanese Journal of Ophthalmology. 55(6). 660–669. 1 indexed citations
17.
Nishitsuka, Koichi, et al.. (2010). Cloning and characterization of cell strains derived from human corneal stroma and sclera. Japanese Journal of Ophthalmology. 54(1). 74–80. 6 indexed citations
18.
Nishitsuka, Koichi, et al.. (2009). Cloning and characterization of human vitreous tissue-derived cells. Acta Ophthalmologica. 89(6). 538–543. 10 indexed citations
19.
Tojo, Naoki, Koichi Nishitsuka, Shuichi Yamamoto, et al.. (2009). Interactions between vitreous‐derived cells and vascular endothelial cells in vitreoretinal diseases. Acta Ophthalmologica. 88(5). 564–570. 17 indexed citations
20.
Tojo, Naoki, Koichi Nishitsuka, Shuichi Yamamoto, et al.. (2008). Interaction Between Vitreous-Derived Cells and Vascular Endothelial Cells in Vitreoretinal Diseases. Investigative Ophthalmology & Visual Science. 49(13). 951–951. 1 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.

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