Rankings for Scientist

More Than a Ranking

India Scientists Medical and Health Sciences / Ophthalmology Rankings in India 2024

The international independent ranking organisation AD Scientific Index is more than an ordinary "Ranking". The "AD Scientific Index" analyses the academic work of scientists using the H-index, i10 index and number of citations, and provides results that can be used to evaluate the productivity and efficiency of individuals and institutions. In addition to ranking according to "total H-index" for individuals and institutions, you can also see the ranking and analyses according to "last 6 years H-index", "total i10 Productivity index", "last 6 years i10 Productivity index", "total citations" and "last 6 years citations" only in "AD Scientific Index". See also: Subject Rankings, University Subject Rankings and  Universities Rankings 2024 (Sort by: Last 6 years H Index).   Click here for individual or institutional registration.

map
×
Total 128 scientist
Radhika Tandon
Radhika Tandon
All India Institute of Medical Sciences
All India Institute of Medical Sciences
India
Medical and Health Sciences / Ophthalmology
PLASTIC SURGERY
H-Index Rankings
University / Institution:
# 7
Country:
# 603
Region:
# 7,590
World:
# 57,031
H-Index
Total:
56
Last 6 Year:
40
Last 6 Year/Total:
0.714
i10 Index
Total:
285
Last 6 Year:
184
Last 6 Year/Total:
0.646
Citation
Total:
13,047
Last 6 Year:
6,673
Last 6 Year/Total:
0.511
Rohit Saxena Md
Rohit Saxena Md
All India Institute of Medical Sciences
All India Institute of Medical Sciences
India
Medical and Health Sciences / Ophthalmology
Ophthalmology
H-Index Rankings
University / Institution:
# 11
Country:
# 1,212
Region:
# 13,121
World:
# 90,880
H-Index
Total:
47
Last 6 Year:
33
Last 6 Year/Total:
0.702
i10 Index
Total:
172
Last 6 Year:
119
Last 6 Year/Total:
0.692
Citation
Total:
8,510
Last 6 Year:
4,927
Last 6 Year/Total:
0.579
Taraprasad Das
Taraprasad Das
L V Prasad Eye Institute
L V Prasad Eye Institute
India
Medical and Health Sciences / Ophthalmology
Ophthalmology
Retina
Public Health
H-Index Rankings
University / Institution:
# 2
Country:
# 2,143
Region:
# 20,547
World:
# 132,518
H-Index
Total:
40
Last 6 Year:
28
Last 6 Year/Total:
0.700
i10 Index
Total:
171
Last 6 Year:
113
Last 6 Year/Total:
0.661
Citation
Total:
6,578
Last 6 Year:
3,430
Last 6 Year/Total:
0.521
Kirandeep Kaur
Kirandeep Kaur
Aravind Eye Hospital
Aravind Eye Hospital
India
Medical and Health Sciences / Ophthalmology
Ophthalmology
Squint
Cataract
Amblyopia
H-Index Rankings
University / Institution:
# 2
Country:
# 2,468
Region:
# 23,046
World:
# 145,888
H-Index
Total:
38
Last 6 Year:
32
Last 6 Year/Total:
0.842
i10 Index
Total:
154
Last 6 Year:
127
Last 6 Year/Total:
0.825
Citation
Total:
7,638
Last 6 Year:
5,318
Last 6 Year/Total:
0.696
Narendran Venkatapathy
Narendran Venkatapathy
Aravind Eye Hospital
Aravind Eye Hospital
India
Medical and Health Sciences / Ophthalmology
Ophthalmology
Retina and vitreous
H-Index Rankings
University / Institution:
# 5
Country:
# 3,609
Region:
# 31,132
World:
# 187,154
H-Index
Total:
34
Last 6 Year:
24
Last 6 Year/Total:
0.706
i10 Index
Total:
86
Last 6 Year:
68
Last 6 Year/Total:
0.791
Citation
Total:
4,255
Last 6 Year:
2,277
Last 6 Year/Total:
0.535
Parikshit Gogate
Parikshit Gogate
Dr D Y Patil University
Dr D Y Patil University
India
Medical and Health Sciences / Pediatrics and Child Health
paediatric ophthalmology
H-Index Rankings
University / Institution:
# 7
Country:
# 4,277
Region:
# 35,575
World:
# 209,145
H-Index
Total:
32
Last 6 Year:
25
Last 6 Year/Total:
0.781
i10 Index
Total:
52
Last 6 Year:
42
Last 6 Year/Total:
0.808
Citation
Total:
3,913
Last 6 Year:
1,730
Last 6 Year/Total:
0.442
Rajeev Kumar Reddy Pappuru
Rajeev Kumar Reddy Pappuru
L V Prasad Eye Institute
L V Prasad Eye Institute
India
Medical and Health Sciences / Ophthalmology
Ophthalmology
Retinal Imaging
Medical Retina
Endoscopic Vitreoretinal Surgery
Uveitis
H-Index Rankings
University / Institution:
# 5
Country:
# 5,524
Region:
# 43,770
World:
# 248,986
H-Index
Total:
29
Last 6 Year:
24
Last 6 Year/Total:
0.828
i10 Index
Total:
81
Last 6 Year:
67
Last 6 Year/Total:
0.827
Citation
Total:
2,650
Last 6 Year:
1,997
Last 6 Year/Total:
0.754
Ramesh S Ve
Ramesh S Ve
Manipal University
Manipal University
India
Medical and Health Sciences / Optometry
Glaucoma
Eye Diseases
Epidemiology
Tele ophthalmology and Technonolgy development
H-Index Rankings
University / Institution:
# 46
Country:
# 5,645
Region:
# 44,510
World:
# 252,339
H-Index
Total:
29
Last 6 Year:
22
Last 6 Year/Total:
0.759
i10 Index
Total:
45
Last 6 Year:
33
Last 6 Year/Total:
0.733
Citation
Total:
4,296
Last 6 Year:
1,828
Last 6 Year/Total:
0.426
Vivek Gupta
Vivek Gupta
All India Institute of Medical Sciences
All India Institute of Medical Sciences
India
Medical and Health Sciences / Ophthalmology
Community Ophthalmology
H-Index Rankings
University / Institution:
# 46
Country:
# 6,048
Region:
# 47,250
World:
# 265,196
H-Index
Total:
28
Last 6 Year:
23
Last 6 Year/Total:
0.821
i10 Index
Total:
63
Last 6 Year:
53
Last 6 Year/Total:
0.841
Citation
Total:
3,497
Last 6 Year:
2,378
Last 6 Year/Total:
0.680
Vivek Singh
Vivek Singh
L V Prasad Eye Institute
L V Prasad Eye Institute
India
Medical and Health Sciences / Ophthalmology
Ocular Regeneration Therapy Limbal Stem Cells
MSCs
Corneal wound Healing
Cornea Bioprinting
Lacrimal Regeneration and Dry Ey
H-Index Rankings
University / Institution:
# 7
Country:
# 7,241
Region:
# 54,690
World:
# 300,087
H-Index
Total:
26
Last 6 Year:
22
Last 6 Year/Total:
0.846
i10 Index
Total:
54
Last 6 Year:
46
Last 6 Year/Total:
0.852
Citation
Total:
2,638
Last 6 Year:
1,939
Last 6 Year/Total:
0.735
Adscientificindex
Adscientificindex

Click for INSTITUTIONAL BULK REGISTRATION and PREMIUM MEMBERSHIP advantages

Vinita Gupta
Vinita Gupta
All India Institute of Medical Sciences AIIMS Rishikesh
All India Institute of Medical Sciences AIIMS Rishikesh
India
Medical and Health Sciences / Ophthalmology
pediatric ophthalmology
H-Index Rankings
University / Institution:
# 6
Country:
# 7,631
Region:
# 56,793
World:
# 310,973
H-Index
Total:
26
Last 6 Year:
15
Last 6 Year/Total:
0.577
i10 Index
Total:
74
Last 6 Year:
32
Last 6 Year/Total:
0.432
Citation
Total:
3,056
Last 6 Year:
1,334
Last 6 Year/Total:
0.437
Parul Ichhpujani
Parul Ichhpujani
Government Medical College & Hospital Chandigarh
Government Medical College & Hospital Chandigarh
India
Medical and Health Sciences / Ophthalmology
Glaucoma
Neurophthalmology
H-Index Rankings
University / Institution:
# 3
Country:
# 8,934
Region:
# 65,063
World:
# 347,107
H-Index
Total:
24
Last 6 Year:
18
Last 6 Year/Total:
0.750
i10 Index
Total:
50
Last 6 Year:
34
Last 6 Year/Total:
0.680
Citation
Total:
2,014
Last 6 Year:
1,314
Last 6 Year/Total:
0.652
Parijat Chandra
Parijat Chandra
All India Institute of Medical Sciences
All India Institute of Medical Sciences
India
Medical and Health Sciences / Ophthalmology
Pediatric Vitreoretinal Surgery
Retinopathy of Prematurity
H-Index Rankings
University / Institution:
# 54
Country:
# 9,012
Region:
# 65,417
World:
# 348,980
H-Index
Total:
24
Last 6 Year:
17
Last 6 Year/Total:
0.708
i10 Index
Total:
62
Last 6 Year:
41
Last 6 Year/Total:
0.661
Citation
Total:
2,306
Last 6 Year:
1,379
Last 6 Year/Total:
0.598
Rohan Chawla
Rohan Chawla
All India Institute of Medical Sciences
All India Institute of Medical Sciences
India
Medical and Health Sciences / Ophthalmology
Ophthalmology
H-Index Rankings
University / Institution:
# 59
Country:
# 9,424
Region:
# 68,027
World:
# 361,204
H-Index
Total:
23
Last 6 Year:
21
Last 6 Year/Total:
0.913
i10 Index
Total:
85
Last 6 Year:
66
Last 6 Year/Total:
0.776
Citation
Total:
2,343
Last 6 Year:
1,906
Last 6 Year/Total:
0.813
Vivek Dave
Vivek Dave
L V Prasad Eye Institute
L V Prasad Eye Institute
India
Medical and Health Sciences / Ophthalmology
Vitreoretinal diseases
H-Index Rankings
University / Institution:
# 16
Country:
# 10,291
Region:
# 72,950
World:
# 384,170
H-Index
Total:
22
Last 6 Year:
21
Last 6 Year/Total:
0.955
i10 Index
Total:
64
Last 6 Year:
55
Last 6 Year/Total:
0.859
Citation
Total:
1,863
Last 6 Year:
1,541
Last 6 Year/Total:
0.827
Renuka Srinivasan
Renuka Srinivasan
Jawaharlal Institute of Postgraduate Medical Education & Research
Jawaharlal Institute of Postgraduate Medical Education & Research
India
Medical and Health Sciences / Ophthalmology
ocular trauma
cataract pediatric ophthalmology
glaucoma
H-Index Rankings
University / Institution:
# 18
Country:
# 12,238
Region:
# 83,953
World:
# 432,248
H-Index
Total:
21
Last 6 Year:
13
Last 6 Year/Total:
0.619
i10 Index
Total:
41
Last 6 Year:
16
Last 6 Year/Total:
0.390
Citation
Total:
2,659
Last 6 Year:
963
Last 6 Year/Total:
0.362
Zia Chaudhuri
Zia Chaudhuri
University of Delhi
University of Delhi
India
Medical and Health Sciences / Ophthalmology
Ophthalmology
Genetics
MRI imaging
H-Index Rankings
University / Institution:
# 128
Country:
# 12,299
Region:
# 84,264
World:
# 434,313
H-Index
Total:
21
Last 6 Year:
12
Last 6 Year/Total:
0.571
i10 Index
Total:
35
Last 6 Year:
14
Last 6 Year/Total:
0.400
Citation
Total:
1,708
Last 6 Year:
865
Last 6 Year/Total:
0.506
Virender Sachdeva
Virender Sachdeva
L V Prasad Eye Institute
L V Prasad Eye Institute
India
Medical and Health Sciences / Ophthalmology
Pediatric Ophthalmology
Strabismus
and Neuro-ophthalmology
H-Index Rankings
University / Institution:
# 20
Country:
# 12,849
Region:
# 88,091
World:
# 449,205
H-Index
Total:
20
Last 6 Year:
17
Last 6 Year/Total:
0.850
i10 Index
Total:
30
Last 6 Year:
23
Last 6 Year/Total:
0.767
Citation
Total:
996
Last 6 Year:
689
Last 6 Year/Total:
0.692
Bhupesh Bagga
Bhupesh Bagga
L V Prasad Eye Institute
L V Prasad Eye Institute
India
Medical and Health Sciences / Ophthalmology
Cornea
H-Index Rankings
University / Institution:
# 27
Country:
# 15,487
Region:
# 102,574
World:
# 512,351
H-Index
Total:
18
Last 6 Year:
16
Last 6 Year/Total:
0.889
i10 Index
Total:
26
Last 6 Year:
24
Last 6 Year/Total:
0.923
Citation
Total:
882
Last 6 Year:
741
Last 6 Year/Total:
0.840
Ramandeep Singh
Ramandeep Singh
Postgraduate Institute of Medical Education & Research Chandigarh
Postgraduate Institute of Medical Education & Research Chandigarh
India
Medical and Health Sciences / Ophthalmology
Medical and surgical retina
Uveitis
H-Index Rankings
University / Institution:
# 76
Country:
# 16,396
Region:
# 106,911
World:
# 533,308
H-Index
Total:
18
Last 6 Year:
11
Last 6 Year/Total:
0.611
i10 Index
Total:
24
Last 6 Year:
13
Last 6 Year/Total:
0.542
Citation
Total:
1,723
Last 6 Year:
498
Last 6 Year/Total:
0.289
Anthony Vipin Das
Anthony Vipin Das
L V Prasad Eye Institute
L V Prasad Eye Institute
India
Medical and Health Sciences / Ophthalmology
Big Data
Ophthalmology
Machine Learning
Digital Health
H-Index Rankings
University / Institution:
# 29
Country:
# 16,543
Region:
# 107,634
World:
# 538,261
H-Index
Total:
17
Last 6 Year:
17
Last 6 Year/Total:
1.000
i10 Index
Total:
34
Last 6 Year:
30
Last 6 Year/Total:
0.882
Citation
Total:
1,268
Last 6 Year:
1,236
Last 6 Year/Total:
0.975
Jagadesh C Reddy
Jagadesh C Reddy
L V Prasad Eye Institute
L V Prasad Eye Institute
India
Medical and Health Sciences / Ophthalmology
Ophthalmology
H-Index Rankings
University / Institution:
# 30
Country:
# 16,551
Region:
# 107,670
World:
# 538,356
H-Index
Total:
17
Last 6 Year:
17
Last 6 Year/Total:
1.000
i10 Index
Total:
31
Last 6 Year:
26
Last 6 Year/Total:
0.839
Citation
Total:
1,237
Last 6 Year:
952
Last 6 Year/Total:
0.770
Anita Raghavan
Anita Raghavan
Aravind Eye Hospital
Aravind Eye Hospital
India
Medical and Health Sciences / Ophthalmology
Ophthalmology
Ocular Infections
External Eye Diseases
Refractive Surgery
H-Index Rankings
University / Institution:
# 8
Country:
# 17,563
Region:
# 113,741
World:
# 560,995
H-Index
Total:
17
Last 6 Year:
13
Last 6 Year/Total:
0.765
i10 Index
Total:
26
Last 6 Year:
18
Last 6 Year/Total:
0.692
Citation
Total:
1,218
Last 6 Year:
769
Last 6 Year/Total:
0.631
Vishnu Vy
Vishnu Vy
All India Institute of Medical Sciences
All India Institute of Medical Sciences
India
Medical and Health Sciences / Nephrology
Neurology
Stroke
Neuromuscular diseases
Cognitive Neurology
Neuro-Ophthalmology
H-Index Rankings
University / Institution:
# 99
Country:
# 18,731
Region:
# 120,215
World:
# 589,267
H-Index
Total:
16
Last 6 Year:
14
Last 6 Year/Total:
0.875
i10 Index
Total:
27
Last 6 Year:
21
Last 6 Year/Total:
0.778
Citation
Total:
1,342
Last 6 Year:
1,000
Last 6 Year/Total:
0.745
Rahul Bhargava
Rahul Bhargava
Sharda University
Sharda University
India
Medical and Health Sciences / Ophthalmology
Clinical Research
H-Index Rankings
University / Institution:
# 32
Country:
# 20,984
Region:
# 131,953
World:
# 638,620
H-Index
Total:
15
Last 6 Year:
13
Last 6 Year/Total:
0.867
i10 Index
Total:
17
Last 6 Year:
15
Last 6 Year/Total:
0.882
Citation
Total:
904
Last 6 Year:
490
Last 6 Year/Total:
0.542
AD Scientific Index - World Scientists Rankings - 2024 H INDEX i10 INDEX CITATION
University /
Institution 		Country Region World Name Country University / Institution Subject Total Last 6 year Last 6 year/total Total Last 6 year Last 6 year/total Total Last 6 year Last 6 year/total
7 603 7,590 57,031
Radhika TandonRadhika Tandon
India India All India Institute of Medical Sciences All India Institute of Medical Sciences Medical and Health Sciences / Ophthalmology

PLASTIC SURGERY |

56 40 0.714 285 184 0.646 13,047 6,673 0.511
11 1,212 13,121 90,880
Rohit Saxena MdRohit Saxena Md
India India All India Institute of Medical Sciences All India Institute of Medical Sciences Medical and Health Sciences / Ophthalmology

Ophthalmology |

47 33 0.702 172 119 0.692 8,510 4,927 0.579
2 2,143 20,547 132,518
Taraprasad DasTaraprasad Das
India India L V Prasad Eye Institute L V Prasad Eye Institute Medical and Health Sciences / Ophthalmology

Ophthalmology | Retina | Public Health |

40 28 0.700 171 113 0.661 6,578 3,430 0.521
2 2,468 23,046 145,888
Kirandeep KaurKirandeep Kaur
India India Aravind Eye Hospital Aravind Eye Hospital Medical and Health Sciences / Ophthalmology

Ophthalmology | Squint | Cataract | Amblyopia |

38 32 0.842 154 127 0.825 7,638 5,318 0.696
5 3,609 31,132 187,154
Narendran VenkatapathyNarendran Venkatapathy
India India Aravind Eye Hospital Aravind Eye Hospital Medical and Health Sciences / Ophthalmology

Ophthalmology | Retina and vitreous |

34 24 0.706 86 68 0.791 4,255 2,277 0.535
7 4,277 35,575 209,145
Parikshit GogateParikshit Gogate
India India Dr D Y Patil University Dr D Y Patil University Medical and Health Sciences / Pediatrics and Child Health

paediatric ophthalmology |

32 25 0.781 52 42 0.808 3,913 1,730 0.442
5 5,524 43,770 248,986
Rajeev Kumar Reddy PappuruRajeev Kumar Reddy Pappuru
India India L V Prasad Eye Institute L V Prasad Eye Institute Medical and Health Sciences / Ophthalmology

Ophthalmology | Retinal Imaging | Medical Retina | Endoscopic Vitreoretinal Surgery | Uveitis |

29 24 0.828 81 67 0.827 2,650 1,997 0.754
46 5,645 44,510 252,339
Ramesh S VeRamesh S Ve
India India Manipal University Manipal University Medical and Health Sciences / Optometry

Glaucoma | Eye Diseases | Epidemiology | Tele ophthalmology and Technonolgy development |

29 22 0.759 45 33 0.733 4,296 1,828 0.426
46 6,048 47,250 265,196
Vivek GuptaVivek Gupta
India India All India Institute of Medical Sciences All India Institute of Medical Sciences Medical and Health Sciences / Ophthalmology

Community Ophthalmology |

28 23 0.821 63 53 0.841 3,497 2,378 0.680
7 7,241 54,690 300,087
Vivek SinghVivek Singh
India India L V Prasad Eye Institute L V Prasad Eye Institute Medical and Health Sciences / Ophthalmology

Ocular Regeneration Therapy Limbal Stem Cells | MSCs | Corneal wound Healing | Cornea Bioprinting | Lacrimal Regeneration and Dry Ey |

26 22 0.846 54 46 0.852 2,638 1,939 0.735
Adscientificindex

Click for INSTITUTIONAL BULK REGISTRATION and PREMIUM MEMBERSHIP advantages

 Adscientificindex
6 7,631 56,793 310,973
Vinita GuptaVinita Gupta
India India All India Institute of Medical Sciences AIIMS Rishikesh All India Institute of Medical Sciences AIIMS Rishikesh Medical and Health Sciences / Ophthalmology

pediatric ophthalmology |

26 15 0.577 74 32 0.432 3,056 1,334 0.437
3 8,934 65,063 347,107
Parul IchhpujaniParul Ichhpujani
India India Government Medical College & Hospital Chandigarh Government Medical College & Hospital Chandigarh Medical and Health Sciences / Ophthalmology

Glaucoma | Neurophthalmology |

24 18 0.750 50 34 0.680 2,014 1,314 0.652
54 9,012 65,417 348,980
Parijat ChandraParijat Chandra
India India All India Institute of Medical Sciences All India Institute of Medical Sciences Medical and Health Sciences / Ophthalmology

Pediatric Vitreoretinal Surgery | Retinopathy of Prematurity |

24 17 0.708 62 41 0.661 2,306 1,379 0.598
59 9,424 68,027 361,204
Rohan ChawlaRohan Chawla
India India All India Institute of Medical Sciences All India Institute of Medical Sciences Medical and Health Sciences / Ophthalmology

Ophthalmology |

23 21 0.913 85 66 0.776 2,343 1,906 0.813
16 10,291 72,950 384,170
Vivek DaveVivek Dave
India India L V Prasad Eye Institute L V Prasad Eye Institute Medical and Health Sciences / Ophthalmology

Vitreoretinal diseases |

22 21 0.955 64 55 0.859 1,863 1,541 0.827
18 12,238 83,953 432,248
Renuka SrinivasanRenuka Srinivasan
India India Jawaharlal Institute of Postgraduate Medical Education & Research Jawaharlal Institute of Postgraduate Medical Education & Research Medical and Health Sciences / Ophthalmology

ocular trauma | cataract pediatric ophthalmology | glaucoma |

21 13 0.619 41 16 0.390 2,659 963 0.362
128 12,299 84,264 434,313
Zia ChaudhuriZia Chaudhuri
India India University of Delhi University of Delhi Medical and Health Sciences / Ophthalmology

Ophthalmology | Genetics | MRI imaging |

21 12 0.571 35 14 0.400 1,708 865 0.506
20 12,849 88,091 449,205
Virender SachdevaVirender Sachdeva
India India L V Prasad Eye Institute L V Prasad Eye Institute Medical and Health Sciences / Ophthalmology

Pediatric Ophthalmology | Strabismus | and Neuro-ophthalmology |

20 17 0.850 30 23 0.767 996 689 0.692
27 15,487 102,574 512,351
Bhupesh BaggaBhupesh Bagga
India India L V Prasad Eye Institute L V Prasad Eye Institute Medical and Health Sciences / Ophthalmology

Cornea |

18 16 0.889 26 24 0.923 882 741 0.840
76 16,396 106,911 533,308
Ramandeep SinghRamandeep Singh
India India Postgraduate Institute of Medical Education & Research Chandigarh Postgraduate Institute of Medical Education & Research Chandigarh Medical and Health Sciences / Ophthalmology

Medical and surgical retina | Uveitis |

18 11 0.611 24 13 0.542 1,723 498 0.289
29 16,543 107,634 538,261
Anthony Vipin DasAnthony Vipin Das
India India L V Prasad Eye Institute L V Prasad Eye Institute Medical and Health Sciences / Ophthalmology

Big Data | Ophthalmology | Machine Learning | Digital Health |

17 17 1.000 34 30 0.882 1,268 1,236 0.975
30 16,551 107,670 538,356
Jagadesh C ReddyJagadesh C Reddy
India India L V Prasad Eye Institute L V Prasad Eye Institute Medical and Health Sciences / Ophthalmology

Ophthalmology |

17 17 1.000 31 26 0.839 1,237 952 0.770
8 17,563 113,741 560,995
Anita RaghavanAnita Raghavan
India India Aravind Eye Hospital Aravind Eye Hospital Medical and Health Sciences / Ophthalmology

Ophthalmology | Ocular Infections | External Eye Diseases | Refractive Surgery |

17 13 0.765 26 18 0.692 1,218 769 0.631
99 18,731 120,215 589,267
Vishnu VyVishnu Vy
India India All India Institute of Medical Sciences All India Institute of Medical Sciences Medical and Health Sciences / Nephrology

Neurology | Stroke | Neuromuscular diseases | Cognitive Neurology | Neuro-Ophthalmology |

16 14 0.875 27 21 0.778 1,342 1,000 0.745
32 20,984 131,953 638,620
Rahul BhargavaRahul Bhargava
India India Sharda University Sharda University Medical and Health Sciences / Ophthalmology

Clinical Research |

15 13 0.867 17 15 0.882 904 490 0.542