Total 2,403,032 scientists, country 221, and institutions 24,466 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 1
![James Wolffsohn](https://cdn.adscientificindex.com/pictures/4f/4328475.jpg)
optometry
contact lenses
intraocular lenses
low vision
accommodation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
271
229
0.845
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Stephen J Anderson](https://cdn.adscientificindex.com/pictures/fc/4328520.jpg)
human vision
visual attention
reading
polarization perception
amblyopia
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
54
25
0.463
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Leon N Davies](https://cdn.adscientificindex.com/pictures/ae/4328565.jpg)
Presbyopia
Accommodation
Physiological Optics
Optometry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
53
39
0.736
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Nicola Logan](https://cdn.adscientificindex.com/pictures/9c/4328563.jpg)
myopia development
myopia control
ocular biometry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
46
44
0.957
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Debarun Dutta](https://cdn.adscientificindex.com/pictures/de/4328650.jpg)
cornea
contact lens
ocular surface
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
40
0.976
* Total i10 IndexRankings
Ranking Based On Selection: 6
![Hannah Bartlett](https://cdn.adscientificindex.com/pictures/19/4328586.jpg)
optometry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
27
0.659
* Total i10 IndexRankings
Ranking Based On Selection: 7
![Mark Cm Dunne](https://cdn.adscientificindex.com/pictures/7b/4328598.jpg)
Computer aided learning
Bayesian clinical decision support
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
37
10
0.270
* Total i10 IndexRankings
Ranking Based On Selection: 8
![Fabrizio Zeri](https://cdn.adscientificindex.com/pictures/5b/4328753.jpg)
Optometry
Neurosciences
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
29
19
0.655
* Total i10 IndexRankings
Ranking Based On Selection: 9
![Paramdeep Bilkhu](/user/assets/images/profile/no-profile-photo.png)
Optometry
Ophthalmology
Vision Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
14
0.875
James Wolffsohn
Aston University
Birmingham, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
271
229
0.845
optometry
contact lenses
intraocular lenses
low vision
accommodation
Stephen J Anderson
Aston University
Birmingham, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
54
25
0.463
human vision
visual attention
reading
polarization perception
amblyopia
Leon N Davies
Aston University
Birmingham, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
53
39
0.736
Presbyopia
Accommodation
Physiological Optics
Optometry
Nicola Logan
Aston University
Birmingham, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
46
44
0.957
myopia development
myopia control
ocular biometry
Debarun Dutta
Aston University
Birmingham, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
40
0.976
cornea
contact lens
ocular surface
Hannah Bartlett
Aston University
Birmingham, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
27
0.659
Mark Cm Dunne
Aston University
Birmingham, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
37
10
0.270
Computer aided learning
Bayesian clinical decision support
Fabrizio Zeri
Aston University
Birmingham, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
29
19
0.655
Paramdeep Bilkhu
Aston University
Birmingham, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
14
0.875
Optometry
Ophthalmology
Vision Science