Science Explorer Interactive view Map
Company · Tokyo · Japan

Topcon (Japan)

topcon.co.jp/enROR OpenAlex
World rank, all time
#35,298
of 42,892
Rank in Japan
#1,527
of 2,112
Research works
219
▲ 25% vs 2013–17
Citations
3k
13.9 per fractional work
Top-10% rate
7.0%
record average 16.5%
Open access
32%
world 28%

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Biochemistry, Genetics and Molecular Biology: 0.24× its world share, 0 worksBiochemistry, Geneti…Immunology and Microbiology: 0.45× its world share, 0 worksImmunology and Micro…Neuroscience: 0.98× its world share, 0 worksNeuroscienceEnergy: 0.50× its world share, 0 worksEnergyEngineering: 1.91× its world share, 7 worksEngineeringEnvironmental Science: 0.09× its world share, 0 worksEnvironmental ScienceMaterials Science: 0.59× its world share, 0 worksMaterials ScienceMathematics: 0.58× its world share, 0 worksMathematicsHealth Professions: 0.26× its world share, 0 worksHealth ProfessionsMedicine: 3.25× its world share, 15 worksMedicinePsychology: 0.15× its world share, 0 worksPsychologySocial Sciences: 0.05× its world share, 0 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Medicine, 3.2×. Every wedge is a field page.

Who are the top researchers at Topcon (Japan)?

Ranked on the composite score, Masahiro Akïba, Tatsuo Yamaguchi and Shinichi Nakazawa lead among researchers whose main affiliation is Topcon (Japan).

  1. 1 Masahiro Akïba Japan · #189,318 worldwide 153 citations · 31 works
  2. 2 Tatsuo Yamaguchi Japan · #1,187,397 worldwide 30 citations · 60 works
  3. 3 Shinichi Nakazawa Japan · #1,343,210 worldwide 4 citations · 15 works
  4. 4 Toshifumi Mihashi Japan · #1,409,583 worldwide 5 citations · 51 works
  5. 5 Yoko Hirohara Japan · #1,431,794 worldwide 4 citations · 26 works
All ranked researchers at Topcon (Japan)

Which keywords describe research at Topcon (Japan)?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Optical Coherence Tomography, Glaucoma, Macular Degeneration, Optic Nerve, Diabetic Retinopathy, Intraocular Pressure, Risk Factors and Biomedical Applications.

▲ more of its work than of the world’s◆ about the world’s share▼ less than the world’s

Size is fractional works in 2022–2025 in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 26 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 26 words, with their numbers
  1. Optical Coherence Tomography6▲ 260×3 topics
  2. Glaucoma5▲ 145×2 topics
  3. Macular Degeneration5▲ 176×3 topics
  4. Optic Nerve5▲ 217×2 topics
  5. Diabetic Retinopathy5▲ 212×2 topics
  6. Intraocular Pressure4▲ 171×2 topics
  7. Risk Factors3▲ 13×3 topics
  8. Biomedical Applications3▲ 11×2 topics
  9. In Vivo Imaging3▲ 145×2 topics
  10. High-Resolution Imaging3▲ 251×1 topic
  11. Spectral-Domain OCT3▲ 535×1 topic
  12. Inflammation3▲ 5.5×2 topics
  13. Ocular Hypertension3▲ 224×1 topic
  14. Retinal Ganglion Cells3▲ 105×1 topic
  15. Oxidative Stress3▲ 6.9×1 topic
  16. Retinal Pigment Epithelium3▲ 213×1 topic
  17. Deep Learning2▲ 3.0×2 topics
  18. Myopia2▲ 174×2 topics
  19. Retinal Disease2▲ 198×1 topic
  20. Vessel Segmentation2▲ 210×1 topic
  21. Macular Hole2▲ 304×1 topic
  22. Vitreoretinal Surgery2▲ 304×1 topic
  23. Epidemiology1▲ 1.32×3 topics
  24. Image Processing1▲ 10×2 topics
  25. Roughness Measurement1▲ 226×1 topic
  26. Surface Characterization1▲ 186×1 topic

Which research topics does Topcon (Japan) publish most on?

By volume in 2022–2025: Optical Coherence Tomography Applications, Glaucoma and retinal disorders, Retinal Diseases and Treatments and Retinal Imaging and Analysis.

Optical Coherence Tomography Applications: 3 fractional worksGlaucoma and retinal disorders: 3 fractional worksRetinal Diseases and Treatments: 3 fractional worksRetinal Imaging and Analysis: 2 fractional worksRetinal and Macular Surgery: 2 fractional worksSurface Roughness and Op…1Surface Roughness and Optical Measurements: 1 fractional worksOphthalmology and Visual Impairment Studies: 1 fractional worksRetinal and Optic Conditions: 1 fractional worksPhotonic and Optical Devices: 1 fractional worksSemiconductor Lasers and Optical Devices: 1 fractional works
Biomedical EngineeringOphthalmologyRadiology, Nuclear Medicine and ImagingComputational Mechanics2 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Optical Coherence Tomography Applications Biomedical Engineering 3 works
  2. 2 Glaucoma and retinal disorders Ophthalmology 3 works
  3. 3 Retinal Diseases and Treatments Ophthalmology 3 works
  4. 4 Retinal Imaging and Analysis Radiology, Nuclear Medicine and Imaging 2 works
  5. 5 Retinal and Macular Surgery Radiology, Nuclear Medicine and Imaging 2 works
  6. 6 Surface Roughness and Optical Measurements Computational Mechanics 1 works
  7. 7 Ophthalmology and Visual Impairment Studies Epidemiology 1 works
  8. 8 Retinal and Optic Conditions Ophthalmology 1 works
  9. 9 Photonic and Optical Devices Electrical and Electronic Engineering 1 works
  10. 10 Semiconductor Lasers and Optical Devices Electrical and Electronic Engineering 1 works

How open and international is its research?

Against the world’s own shares — the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available31.7%not open68.3%

World: 28% of research is openly available.

with international co-authors17.6%domestic only82.4%

World: 19% is written across borders.

How has Topcon (Japan)'s research output changed?

Output in 2018–2022 was 25% higher than in 2013–2017.

200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Other research institutions in Tokyo

All research institutions in Tokyo

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.