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Hospital / health system · Chennai · India

Sankara Nethralaya

In research, Sankara Nethralaya stands highest in Health Sciences (#4,746 of 11,982 worldwide), Medicine (#4,764 of 10,443 worldwide) and Ophthalmology (#60 of 94 worldwide), 2022–2025. Relative to its size it is most specialised in Ophthalmology, Radiology, Nuclear Medicine and Imaging and Neurology — Ophthalmology is 119.5× its share of world research.

sankaranethralaya.orgROR OpenAlex
World rank, 2022–2025
#14,960
of 28,054 · #19,049 all time
Rank in India
#1,027
of 1,840
Research works
2.5k
▲ 95% vs 2013–17
Citations
31k
12.3 per fractional work
Top-10% rate
5.2%
record average 16.5%
Open access
60%
world 28%

What is Sankara Nethralaya known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Health SciencesDomain #4,746 of 11,982 5.4%521 #6516
MedicineField #4,764 of 10,443 5.3%504 #6399
OphthalmologySubfield #60 of 94 5.2%206 #130
Life SciencesDomain #7,330 of 7,800 3.5%85 #9898
Radiology, Nuclear Medicine and ImagingSubfield #547 of 569 6.3%83 #1017

Each strip is that field’s whole ranked pool, with the notch where Sankara Nethralaya sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no world mark, because the world rate differs by field (from about 6% to 21% in this record).

Which of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022–2025. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Health Sciences#6,516 #4,746
  2. Medicine#6,399 #4,764
  3. Ophthalmology#130 #60
  4. Life Sciences#9,898 #7,330
  5. Radiology, Nuclear Medicine and Imaging#1,017 #547
all time2022–2025, better2022–2025, worse

A dot further right is a better standing. Fields it was not ranked in over the whole record are left out.

What does Sankara Nethralaya specialise in?

Where its research is concentrated relative to its size: Ophthalmology takes 119.5× the share of its output that it takes of world research.

  1. OphthalmologySubfield · 205.6 works120×
  2. Radiology, Nuclear Medicine and ImagingSubfield · 83.3 works14×
  3. NeurologySubfield · 22.0 works6.0×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

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.

Agricultural and Biological Sciences: 0.15× its world share, 5 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 1.71× its world share, 59 worksBiochemistry, Geneti…Immunology and Microbiology: 1.86× its world share, 12 worksImmunology and Micro…Neuroscience: 0.77× its world share, 8 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.68× its world share, 2 worksPharmacology, Toxico…Chemistry: 0.16× its world share, 2 worksChemistryComputer Science: 0.07× its world share, 4 worksComputer ScienceEarth and Planetary Sciences: 0.01× its world share, 0 worksEarth and Planetary …Energy: 0.05× its world share, 0 worksEnergyEngineering: 0.08× its world share, 8 worksEngineeringEnvironmental Science: 0.11× its world share, 4 worksEnvironmental ScienceMaterials Science: 0.15× its world share, 3 worksMaterials ScienceMathematics: 0.05× its world share, 0 worksMathematicsPhysics and Astronomy: 0.01× its world share, 0 worksPhysics and AstronomyDentistry: 0.51× its world share, 2 worksDentistryHealth Professions: 0.49× its world share, 8 worksHealth ProfessionsMedicine: 4.07× its world share, 504 worksMedicineNursing: 0.48× its world share, 2 worksNursingVeterinary: 5.68× its world share, 5 worksVeterinaryArts and Humanities: 0.14× its world share, 3 worksArts and HumanitiesBusiness, Management and Accounting: 0.04× its world share, 1 worksBusiness, Management…Decision Sciences: 0.11× its world share, 1 worksDecision SciencesEconomics, Econometrics and Finance: 0.07× its world share, 1 worksEconomics, Econometr…Psychology: 0.36× its world share, 7 worksPsychologySocial Sciences: 0.07× its world share, 6 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Veterinary, 5.7×. Every wedge is a field page.

Who are the top researchers at Sankara Nethralaya?

Ranked on the composite score, Ronnie George, Lingam Vijaya and Rajiv Raman lead among researchers whose main affiliation is Sankara Nethralaya.

  1. 1 Ronnie George India · #14,082 worldwide 571 citations · 49 works
  2. 2 Lingam Vijaya India · #106,566 worldwide 166 citations · 31 works
  3. 3 Rajiv Raman India · #134,212 worldwide 205 citations · 44 works
  4. 4 Tarun Sharma India · #487,628 worldwide 66 citations · 36 works
  5. 5 Bipasha Mukherjee India · #570,975 worldwide 61 citations · 39 works
  6. 6 Jyotirmay Biswas India · #616,473 worldwide 114 citations · 95 works
  7. 7 Harsha Bhattacharjee India · #803,297 worldwide 26 citations · 30 works
  8. 8 Govindasamy Kumaramanickavel India · #873,313 worldwide 62 citations · 25 works
  9. 9 SS Badrinath India · #958,502 worldwide 13 citations · 39 works
  10. 10 Ambika Selvakumar India · #959,272 worldwide 15 citations · 23 works
All ranked researchers at Sankara Nethralaya

Which keywords describe research at Sankara Nethralaya?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Epidemiology, Glaucoma, Intravitreal Injection, Optical Coherence Tomography, Macular Degeneration, Intraocular Pressure, Diabetic Retinopathy and Juvenile Idiopathic Arthritis.

▲ 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 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Epidemiology122▲ 4.8×59 topics
  2. Glaucoma61▲ 65×4 topics
  3. Intravitreal Injection52▲ 118×2 topics
  4. Optical Coherence Tomography52▲ 78×3 topics
  5. Macular Degeneration52▲ 66×3 topics
  6. Intraocular Pressure51▲ 93×2 topics
  7. Diabetic Retinopathy44▲ 68×2 topics
  8. Juvenile Idiopathic Arthritis43▲ 133×2 topics
  9. Immunosuppressive Therapy42▲ 35×3 topics
  10. Behçet's Disease41▲ 240×1 topic
  11. Uveitis41▲ 240×1 topic
  12. Inflammation40▲ 3.0×27 topics
  13. Genetic Mutations37▲ 13×15 topics
  14. Optic Nerve37▲ 58×2 topics
  15. Oxidative Stress37▲ 3.5×23 topics
  16. Myopia37▲ 97×2 topics
  17. Vascular Endothelial Growth Factor35▲ 64×4 topics
  18. Endophthalmitis31▲ 141×2 topics
  19. Antibiotic Resistance30▲ 12×11 topics
  20. COVID-1930▲ 3.4×10 topics
  21. Choroidal Thickness30▲ 88×1 topic
  22. Retinal Pigment Epithelium30▲ 88×1 topic
  23. ACE2 Receptor29▲ 18×3 topics
  24. Corneal Biomechanics27▲ 129×1 topic
  25. Keratoconus27▲ 129×1 topic
  26. Ocular Findings27▲ 146×1 topic
  27. Retinal Artery Occlusion27▲ 146×1 topic
  28. Prognostic Factors25▲ 9.0×9 topics
  29. Femtosecond Laser24▲ 78×1 topic
  30. Intraocular Lens Implantation24▲ 142×1 topic
  31. Neurodegeneration24▲ 13×5 topics
  32. Retinal Ganglion Cells24▲ 33×3 topics
  33. Ocular Hypertension23▲ 70×1 topic
  34. Visual Field Progression23▲ 70×1 topic
  35. Keratitis22▲ 220×1 topic
  36. Ocular Infections22▲ 220×1 topic
  37. Inflammatory Cytokines22▲ 41×2 topics
  38. Dry Eye Disease22▲ 105×1 topic
  39. Ocular Surface22▲ 105×1 topic
  40. OCT Imaging21▲ 122×2 topics

Which research topics does Sankara Nethralaya publish most on?

By volume in 2022–2025: Ocular Diseases and Behçet’s Syndrome, Retinal Diseases and Treatments, Corneal surgery and disorders and Retinal and Optic Conditions.

Ocular Diseases and Behç…41Ocular Diseases and Behçet’s Syndrome: 41 fractional worksRetinal Diseases and Tre…30Retinal Diseases and Treatments: 30 fractional worksCorneal surgery and disorders: 27 fractional worksRetinal and Optic Conditions: 27 fractional worksIntraocular Surgery and Lenses: 24 fractional worksGlaucoma and retinal disorders: 23 fractional worksOcular Infections and Treatments: 22 fractional worksOcular Surface and Conta…22Ocular Surface and Contact Lens: 22 fractional worksOphthalmology and Visual Impairment Studies: 19 fractional worksOcular Oncology and Treatments: 18 fractional works
OphthalmologyRadiology, Nuclear Medicine and ImagingPublic Health, Environmental and Occupational HealthEpidemiology

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

  1. 1 Ocular Diseases and Behçet’s Syndrome Ophthalmology 41 works
  2. 2 Retinal Diseases and Treatments Ophthalmology 30 works
  3. 3 Corneal surgery and disorders Radiology, Nuclear Medicine and Imaging 27 works
  4. 4 Retinal and Optic Conditions Ophthalmology 27 works
  5. 5 Intraocular Surgery and Lenses Ophthalmology 24 works
  6. 6 Glaucoma and retinal disorders Ophthalmology 23 works
  7. 7 Ocular Infections and Treatments Ophthalmology 22 works
  8. 8 Ocular Surface and Contact Lens Public Health, Environmental and Occupational Health 22 works
  9. 9 Ophthalmology and Visual Impairment Studies Epidemiology 19 works
  10. 10 Ocular Oncology and Treatments Ophthalmology 18 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 available60.2%not open39.8%

World: 28% of research is openly available.

with international co-authors13.5%domestic only86.5%

World: 19% is written across borders.

How has Sankara Nethralaya's research output changed?

Output in 2018–2022 was 95% higher than in 2013–2017.

1990200020102020
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 Chennai

All research institutions in Chennai

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.