Citation Rankings
Highly Cited Researchers
Africa Highly Cited Researchers Citation Medical and Health Sciences Medical and Health Sciences / Ophthalmology Rankings 2025
Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation Index, Universities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025
* Total Citation Counts Rankings
Ranking Based On Selection :1
Ophthalmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,334
13,131
0.985
* Total Citation Counts Rankings
Ranking Based On Selection :2
Ophthalmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,602
7,452
0.866
* Total Citation Counts Rankings
Ranking Based On Selection :3
Eye Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,738
2,433
0.424
* Total Citation Counts Rankings
Ranking Based On Selection :4
Ophthalmology
Eye Care
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,259
3,854
0.733
* Total Citation Counts Rankings
Ranking Based On Selection :5
Ophthalmology
Glaucoma
Ophthalmic Epidemiology
Medical Education
Medical Regulation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,715
3,400
0.721
* Total Citation Counts Rankings
Ranking Based On Selection :6
Clean Coal Science and Technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,338
1,999
0.599
* Total Citation Counts Rankings
Ranking Based On Selection :7
Cornea
Glaucoma
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,993
1,159
0.387
* Total Citation Counts Rankings
Ranking Based On Selection :8
Ophthalmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,515
2,442
0.971
* Total Citation Counts Rankings
Ranking Based On Selection :9
Ophthalmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,939
1,268
0.654
* Total Citation Counts Rankings
Ranking Based On Selection :10
Ophthalmology-Vitreoretinal Surgeon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,862
646
0.347
* Total Citation Counts Rankings
Ranking Based On Selection :11
Pediatric Ophthalmology & Strabismus
Ocular Oncology
Retinopathy of Prematurity
Retinoblastoma
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,687
1,362
0.807
* Total Citation Counts Rankings
Ranking Based On Selection :12
Ophthalmology
Cancer Biology
Oncology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,657
1,489
0.899
* Total Citation Counts Rankings
Ranking Based On Selection :13
Ophthalmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,584
883
0.557
* Total Citation Counts Rankings
Ranking Based On Selection :14
Ophthalmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,412
845
0.598
* Total Citation Counts Rankings
Ranking Based On Selection :15
Ophthalmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,382
1,371
0.992
* Total Citation Counts Rankings
Ranking Based On Selection :16
Ophthalmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,326
574
0.433
* Total Citation Counts Rankings
Ranking Based On Selection :17
Community Eye Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,251
461
0.369
* Total Citation Counts Rankings
Ranking Based On Selection :18
Ophthalmology
Epidemiology
Health economics/Policy
Health Leadership
Educational leadership/pedagogy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,014
501
0.494
* Total Citation Counts Rankings
Ranking Based On Selection :19
Paediatric Ophthalmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,013
345
0.341
* Total Citation Counts Rankings
Ranking Based On Selection :20
Ophthalmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,009
556
0.551
* Total Citation Counts Rankings
Ranking Based On Selection :21
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,003
251
0.250
* Total Citation Counts Rankings
Ranking Based On Selection :22
Ophthalmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
986
383
0.388
* Total Citation Counts Rankings
Ranking Based On Selection :23
PAEDIATRIC OPHTHALMOLOGY AND GLAUCOMA
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
962
356
0.370
* Total Citation Counts Rankings
Ranking Based On Selection :24
Ophthalmology
Vision Science
Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
913
904
0.990
* Total Citation Counts Rankings
Ranking Based On Selection :25
GENERAL OPHTHALMOLOGY
DISEASES OF RETINA AND VITREOUS
OPHTHALMIC EPIDEMIOLOGY
PUBLIC HEALTH OPHTHALMOLOGY
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
897
285
0.318
* Total Citation Counts Rankings
Rankings
67,632
81
1
Ranking Based On Selection: 1
Hosam Eldein Beker
Beni Suef University
Beni-Suef, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,334
13,131
0.985
* Total Citation Counts Rankings
Rankings
113,639
31
7
Ranking Based On Selection: 2
Stephen Gichuhi
University of Nairobi
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,602
7,452
0.866
* Total Citation Counts Rankings
Rankings
174,521
117
4
Ranking Based On Selection: 3
Hannah B. Faal
University of Calabar
Calabar, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,738
2,433
0.424
* Total Citation Counts Rankings
Rankings
189,876
2
1
Ranking Based On Selection: 4
Wanjiku Ciku Mathenge
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,259
3,854
0.733
* Total Citation Counts Rankings
Rankings
211,123
170
2
Ranking Based On Selection: 5
Fatima Kyari
University of Abuja
Abuja, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,715
3,400
0.721
Ophthalmology
Glaucoma
Ophthalmic Epidemiology
Medical Education
Medical Regulation
* Total Citation Counts Rankings
Rankings
287,835
1,247
55
Ranking Based On Selection: 6
John Bunt
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,338
1,999
0.599
Clean Coal Science and Technology
* Total Citation Counts Rankings
Rankings
315,493
1,408
165
Ranking Based On Selection: 7
Trevor Carmichael
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,993
1,159
0.387
* Total Citation Counts Rankings
Rankings
362,772
1,658
144
Ranking Based On Selection: 8
Carl-Heinz Kruse
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,515
2,442
0.971
* Total Citation Counts Rankings
Rankings
440,232
1,423
102
Ranking Based On Selection: 9
Wael Soliman
Assiut University
Asyut, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,939
1,268
0.654
* Total Citation Counts Rankings
Rankings
453,387
1,510
158
Ranking Based On Selection: 10
Tamer Macky
Cairo University
Giza, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,862
646
0.347
Ophthalmology-Vitreoretinal Surgeon
* Total Citation Counts Rankings
Rankings
484,726
954
46
Ranking Based On Selection: 11
Ademola Popoola Dupe S.
University of Ilorin
Ilorin, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,687
1,362
0.807
Pediatric Ophthalmology & Strabismus
Ocular Oncology
Retinopathy of Prematurity
Retinoblastoma
* Total Citation Counts Rankings
Rankings
490,767
1,728
126
Ranking Based On Selection: 12
Yousef Ahmed Fouad
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,657
1,489
0.899
Ophthalmology
Cancer Biology
Oncology
* Total Citation Counts Rankings
Rankings
505,923
377
134
Ranking Based On Selection: 13
Kahaki Kimani
University of Nairobi
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,584
883
0.557
* Total Citation Counts Rankings
Rankings
544,687
2,109
44
Ranking Based On Selection: 14
Abdallah A Ellabban
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,412
845
0.598
* Total Citation Counts Rankings
Rankings
551,898
129
12
Ranking Based On Selection: 15
Simon Arunga
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,382
1,371
0.992
* Total Citation Counts Rankings
Rankings
566,443
1,354
30
Ranking Based On Selection: 16
Afekhide Ernest Omoti
University of Benin
Benin City, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,326
574
0.433
* Total Citation Counts Rankings
Rankings
586,728
1,458
147
Ranking Based On Selection: 17
Rich Umeh
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,251
461
0.369
* Total Citation Counts Rankings
Rankings
661,413
388
45
Ranking Based On Selection: 18
Yeshigeta Gelaw Birhanu
Bahir Dar University
Bahir Dar, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,014
501
0.494
Ophthalmology
Epidemiology
Health economics/Policy
Health Leadership
Educational leadership/pedagogy
* Total Citation Counts Rankings
Rankings
661,826
1,898
195
Ranking Based On Selection: 19
Ajaiyeoba Ayotunde
University of Ibadan
Ibadan, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,013
345
0.341
* Total Citation Counts Rankings
Rankings
663,126
3,170
224
Ranking Based On Selection: 20
Ahmed Omar
Assiut University
Asyut, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,009
556
0.551
* Total Citation Counts Rankings
Rankings
665,371
3,200
142
Ranking Based On Selection: 21
Wael El Haig
Zagazig University
Sharqia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,003
251
0.250
* Total Citation Counts Rankings
Rankings
671,416
3,258
306
Ranking Based On Selection: 22
Asaad Ghanem
Mansoura University
Mansoura, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
986
383
0.388
* Total Citation Counts Rankings
Rankings
680,290
2,097
206
Ranking Based On Selection: 23
Aderonke Baiyeroju
University of Ibadan
Ibadan, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
962
356
0.370
PAEDIATRIC OPHTHALMOLOGY AND GLAUCOMA
* Total Citation Counts Rankings
Rankings
698,911
2,329
22
Ranking Based On Selection: 24
Musbahu Sani Kurawa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
913
904
0.990
Ophthalmology
Vision Science
Epidemiology
* Total Citation Counts Rankings
Rankings
705,545
2,411
67
Ranking Based On Selection: 25
Sebastian Ndulue Nwosu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
897
285
0.318
GENERAL OPHTHALMOLOGY
DISEASES OF RETINA AND VITREOUS
OPHTHALMIC EPIDEMIOLOGY
PUBLIC HEALTH OPHTHALMOLOGY