Keigo Shikishima

560 total citations
22 papers, 225 citations indexed

About

Keigo Shikishima is a scholar working on Ophthalmology, Pathology and Forensic Medicine and Molecular Biology. According to data from OpenAlex, Keigo Shikishima has authored 22 papers receiving a total of 225 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Ophthalmology, 8 papers in Pathology and Forensic Medicine and 7 papers in Molecular Biology. Recurrent topics in Keigo Shikishima's work include Multiple Sclerosis Research Studies (7 papers), Peripheral Neuropathies and Disorders (3 papers) and Glaucoma and retinal disorders (3 papers). Keigo Shikishima is often cited by papers focused on Multiple Sclerosis Research Studies (7 papers), Peripheral Neuropathies and Disorders (3 papers) and Glaucoma and retinal disorders (3 papers). Keigo Shikishima collaborates with scholars based in Japan, United Kingdom and Israel. Keigo Shikishima's co-authors include Tsutomu Sakai, Kenji Kitahara, Kazushige Kawai, Masato Matsushima, Hiroshi Tsuneoka, W. Robert Lee, Wallace S. Foulds, W. M. H. Behan, Hitoshi Ishikawa and Makoto Nakamura and has published in prestigious journals such as Ophthalmology, Experimental Eye Research and Optometry and Vision Science.

In The Last Decade

Keigo Shikishima

20 papers receiving 215 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Keigo Shikishima Japan 10 91 58 56 48 39 22 225
Ryan D. Walsh United States 9 75 0.8× 77 1.3× 48 0.9× 58 1.2× 43 1.1× 16 257
Azam Qureshi United States 9 49 0.5× 26 0.4× 31 0.6× 53 1.1× 37 0.9× 21 269
F.–X. Borruat Switzerland 10 175 1.9× 72 1.2× 44 0.8× 30 0.6× 43 1.1× 28 291
Cengiz Akarsu Türkiye 13 253 2.8× 51 0.9× 39 0.7× 73 1.5× 21 0.5× 24 396
Nancy Nealon United States 9 31 0.3× 41 0.7× 41 0.7× 102 2.1× 43 1.1× 18 334
Anquan Peng China 12 52 0.6× 41 0.7× 78 1.4× 28 0.6× 11 0.3× 34 329
Qinglin Chang China 9 47 0.5× 64 1.1× 12 0.2× 68 1.4× 42 1.1× 30 276
Elizenda M. Ceballos United States 7 274 3.0× 22 0.4× 61 1.1× 78 1.6× 33 0.8× 8 413
Brent Gaskin New Zealand 9 189 2.1× 72 1.2× 17 0.3× 22 0.5× 21 0.5× 13 277
Neil Shuey Australia 9 28 0.3× 89 1.5× 18 0.3× 70 1.5× 22 0.6× 22 198

Countries citing papers authored by Keigo Shikishima

Since Specialization
Citations

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

Fields of papers citing papers by Keigo Shikishima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keigo Shikishima

This figure shows the co-authorship network connecting the top 25 collaborators of Keigo Shikishima. A scholar is included among the top collaborators of Keigo Shikishima 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 Keigo Shikishima. Keigo Shikishima 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.
Kezuka, Takeshi, Keigo Shikishima, Hideki Chuman, et al.. (2025). Intravenous immunoglobulin for the acute treatment of refractory optic neuritis in Japan. Japanese Journal of Ophthalmology. 69(5). 775–788.
2.
Kezuka, Takeshi, Keigo Shikishima, Hideki Chuman, et al.. (2024). Usage status of biologics for the chronic treatment of optic neuritis in neuromyelitis optica spectrum disorders in Japan. Japanese Journal of Ophthalmology. 69(1). 81–92.
3.
Ishikawa, Hiroto, Yoichiro Masuda, Hitoshi Ishikawa, et al.. (2021). Correction to: Characteristics of Japanese patients with Leber’s hereditary optic neuropathy and idebenone trial: a prospective, interventional, non-comparative study. Japanese Journal of Ophthalmology. 65(1). 143–143. 1 indexed citations
4.
Mimura, Osamu, Hitoshi Ishikawa, Takeshi Kezuka, et al.. (2021). Intravenous immunoglobulin treatment for steroid-resistant optic neuritis: a multicenter, double-blind, randomized, controlled phase III study. Japanese Journal of Ophthalmology. 65(1). 122–132. 11 indexed citations
5.
Takemura, Hiromasa, Shumpei Ogawa, Aviv Mezer, et al.. (2019). Diffusivity and quantitative T1 profile of human visual white matter tracts after retinal ganglion cell damage. NeuroImage Clinical. 23. 101826–101826. 23 indexed citations
6.
Shikishima, Keigo, et al.. (2019). Efficacy of intensity-modulated radiation therapy for optic nerve sheath meningioma. Graefe s Archive for Clinical and Experimental Ophthalmology. 257(10). 2297–2306. 12 indexed citations
7.
Ueda, Kaori, Yuki Morizane, Fumio Shiraga, et al.. (2017). Nationwide epidemiological survey of Leber hereditary optic neuropathy in Japan. Journal of Epidemiology. 27(9). 447–450. 31 indexed citations
8.
Meguro, Akira, Tsutomu Sakai, Nobuhisa Mizuki, et al.. (2016). Genetic analysis of the aquaporin-4 gene for anti-AQP4 antibody-positive neuromyelitis optica in a Japanese population. Japanese Journal of Ophthalmology. 60(3). 198–205. 12 indexed citations
9.
Sakai, Tsutomu, et al.. (2015). Improved Photoreceptor Function in Male Acute Zonal Occult Outer Retinopathy. Optometry and Vision Science. 92(10). e371–e379. 6 indexed citations
10.
Sakai, Tsutomu, Keigo Shikishima, Masato Matsushima, & Hiroshi Tsuneoka. (2013). Genetic polymorphisms associated with endothelial function in nonarteritic anterior ischemic optic neuropathy.. PubMed. 19. 213–9. 8 indexed citations
11.
Sakai, Tsutomu, et al.. (2011). Anti-aquaporin-4 antibody-positive familial neuromyelitis optica in mother and daughter. Japanese Journal of Ophthalmology. 55(6). 647–650. 16 indexed citations
12.
Shikishima, Keigo, et al.. (2011). [Mixed tumor in the lower eyelid of Moll's gland origin].. PubMed. 115(1). 41–4. 1 indexed citations
13.
Sakai, Tsutomu, Masato Matsushima, Keigo Shikishima, & Kenji Kitahara. (2007). Comparison of Standard Automated Perimetry with Matrix Frequency-Doubling Technology in Patients with Resolved Optic Neuritis. Ophthalmology. 114(5). 949–956. 2 indexed citations
14.
Shikishima, Keigo, et al.. (2006). Metastasis to the Orbit from Transitional Cell Carcinoma of the Bladder. Japanese Journal of Ophthalmology. 50(5). 469–473. 15 indexed citations
15.
Shikishima, Keigo, et al.. (2006). Interpretation of visual field defects respecting the vertical meridian and not related to distinct chiasmal or postchiasmal lesions. Journal of Clinical Neuroscience. 13(9). 923–928. 3 indexed citations
16.
Sakai, Tsutomu, Keigo Shikishima, Masato Matsushima, & Kenji Kitahara. (2006). Endothelial nitric oxide synthase gene polymorphisms in non-arteritic anterior ischemic optic neuropathy. Graefe s Archive for Clinical and Experimental Ophthalmology. 245(2). 288–292. 17 indexed citations
17.
Shikishima, Keigo, Kazushige Kawai, & Kenji Kitahara. (2006). Pathological evaluation of orbital tumours in Japan: analysis of a large case series and 1379 cases reported in the Japanese literature. Clinical and Experimental Ophthalmology. 34(3). 239–244. 25 indexed citations
18.
Shikishima, Keigo. (2004). Methods for subchoroidal implantation of Greene melanoma in rabbits. International Journal of Clinical Oncology. 9(2). 79–84. 2 indexed citations
19.
Sakai, Tsutomu, et al.. (1998). [Meige's syndrome associated with basal ganglia and thalamic functional disorders].. PubMed. 102(11). 764–70. 8 indexed citations
20.
Shikishima, Keigo, W. Robert Lee, W. M. H. Behan, & Wallace S. Foulds. (1993). Uveitis and Retinal Vasculitis in Acute Experimental Allergic Encephalomyelitis in the Lewis Rat: An Ultrastructural Study. Experimental Eye Research. 56(2). 167–175. 25 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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