Ahmed Elsheikh

Summary

Affiliation: University of Dundee
Country: UK

Publications

  1. doi Finite element modeling of corneal biomechanical behavior
    Ahmed Elsheikh
    University of Dundee, Dundee, United Kingdom
    J Refract Surg 26:289-300. 2010
  2. pmc Comparative study of corneal strip extensometry and inflation tests
    Ahmed Elsheikh
    Division of Civil Engineering, Ocular Biomechanics Group, University of Dundee, Dundee DD1 4HN, UK
    J R Soc Interface 2:177-85. 2005
  3. doi Biomechanical properties of human and porcine corneas
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee DD1 4HN, UK
    Exp Eye Res 86:783-90. 2008
  4. doi Assessment of the ocular response analyzer as a tool for intraocular pressure measurement
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee DD1 4HN, UK
    J Biomech Eng 131:081010. 2009
  5. doi Mechanical anisotropy of porcine cornea and correlation with stromal microstructure
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee DD1 4HN, UK
    Exp Eye Res 88:1084-91. 2009
  6. doi Numerical study of the effect of corneal layered structure on ocular biomechanics
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee, United Kingdom
    Curr Eye Res 34:26-35. 2009
  7. doi Numerical modelling of corneal biomechanical behaviour
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee, UK
    Comput Methods Biomech Biomed Engin 10:85-95. 2007
  8. doi Goldmann tonometry correction factors based on numerical analysis
    Ahmed Elsheikh
    University of Dundee, UK
    J Biomech Eng 131:111013. 2009
  9. doi Experimental assessment of human corneal hysteresis
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee, United Kingdom
    Curr Eye Res 33:205-13. 2008
  10. ncbi Experimental assessment of corneal anisotropy
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee DD1 4HN, United Kingdom
    J Refract Surg 24:178-87. 2008

Collaborators

Detail Information

Publications21

  1. doi Finite element modeling of corneal biomechanical behavior
    Ahmed Elsheikh
    University of Dundee, Dundee, United Kingdom
    J Refract Surg 26:289-300. 2010
    ..To optimize the construction details of corneal numerical models while maintaining efficiency and reliability of predictions...
  2. pmc Comparative study of corneal strip extensometry and inflation tests
    Ahmed Elsheikh
    Division of Civil Engineering, Ocular Biomechanics Group, University of Dundee, Dundee DD1 4HN, UK
    J R Soc Interface 2:177-85. 2005
    ..The behaviour obtained from the strip extensometry tests and using the new mathematical analysis procedure is shown to match closely the inflation test results...
  3. doi Biomechanical properties of human and porcine corneas
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee DD1 4HN, UK
    Exp Eye Res 86:783-90. 2008
    ..These differences, in addition to others identified earlier in relation to corneal mechanical anisotropy, cast doubt on the suitability of porcine corneas as models for human corneas in mechanical studies...
  4. doi Assessment of the ocular response analyzer as a tool for intraocular pressure measurement
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee DD1 4HN, UK
    J Biomech Eng 131:081010. 2009
    ..The equation has been tested against a clinical data set obtained at Moorfields Eye Hospital involving 144 subjects, and found to produce IOP estimates that are less dependent on corneal size and age than published equations...
  5. doi Mechanical anisotropy of porcine cornea and correlation with stromal microstructure
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee DD1 4HN, UK
    Exp Eye Res 88:1084-91. 2009
    ..This almost isotropic biomechanical behaviour was compatible with earlier indications of similar collagen fibril densities in the three main orientations of porcine corneas...
  6. doi Numerical study of the effect of corneal layered structure on ocular biomechanics
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee, United Kingdom
    Curr Eye Res 34:26-35. 2009
    ....
  7. doi Numerical modelling of corneal biomechanical behaviour
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee, UK
    Comput Methods Biomech Biomed Engin 10:85-95. 2007
    ..In studying GAT, the model is able to accurately trace the behaviour of the cornea under tonometric pressure and monitor the gap closure and the progress of deformation to the point of applanation...
  8. doi Goldmann tonometry correction factors based on numerical analysis
    Ahmed Elsheikh
    University of Dundee, UK
    J Biomech Eng 131:111013. 2009
    ....
  9. doi Experimental assessment of human corneal hysteresis
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee, United Kingdom
    Curr Eye Res 33:205-13. 2008
    ..Hysteresis is a viscoelastic property characterized by the difference in behavior under loading and unloading. The aim of the study was to determine corneal hysteresis using experimental means...
  10. ncbi Experimental assessment of corneal anisotropy
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee DD1 4HN, United Kingdom
    J Refract Surg 24:178-87. 2008
    ..To determine the variation of corneal biomechanical properties with anatomical orientation...
  11. doi Assessment of the epithelium's contribution to corneal biomechanics
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee, UK
    Exp Eye Res 86:445-51. 2008
    ..These results indicated that the stiffness of the epithelium was considerably lower than that of the stroma, and might therefore be ignored in numerical simulation studies...
  12. ncbi Determination of the modulus of elasticity of the human cornea
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee, United Kingdom
    J Refract Surg 23:808-18. 2007
    ..To determine the material behavior of the human cornea in the form of simple relationships between the modulus of elasticity and intraocular pressure (IOP) and to establish the effect of age on the material behavior...
  13. pmc Characterization of age-related variation in corneal biomechanical properties
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee DD1 4HN, UK
    J R Soc Interface 7:1475-85. 2010
    ..These equations, which closely matched the experimental results, depicted corneal stiffening with age in a form suitable for implementation in numerical simulations of ocular biomechanical behaviour...
  14. ncbi Assessment of corneal biomechanical properties and their variation with age
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee Dundee, UK
    Curr Eye Res 32:11-9. 2007
    ..The aim of this study was to determine the stress-strain behavior of corneal tissue and how the behavior was affected by age...
  15. ncbi Evaluation of Goldmann applanation tonometry using a nonlinear finite element ocular model
    Ahmed Elsheikh
    Division of Civil Engineering, Faculty of Engineering, University of Dundee, Dundee, DD1 4HN, UK
    Ann Biomed Eng 34:1628-40. 2006
    ....
  16. doi Regional variation in the biomechanical properties of the human sclera
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Nethergate, Dundee, Tayside DD1 4HN, UK
    Exp Eye Res 90:624-33. 2010
    ..The considerable variation in biomechanical behaviour found in this study should be useful in improving the accuracy of representing the sclera's real-life conditions in numerical simulations...
  17. doi Multiparameter correction equation for Goldmann applanation tonometry
    Ahmed Elsheikh
    Division of Civil Engineering, University of Dundee, Dundee, United Kingdom
    Optom Vis Sci 88:E102-12. 2011
    ....
  18. doi Age-related variations in the biomechanical properties of human sclera
    Brendan Geraghty
    Division of Civil Engineering, University of Dundee, Nethergate, Dundee, Tayside DD1 4HN, UK
    J Mech Behav Biomed Mater 16:181-91. 2012
    ..26 MPa/decade). The stress-strain behaviour of scleral tissue exhibits increasing stiffness with higher age. In addition to a regional variation of material stiffness, the rate of stiffness growth with age also varies between regions...
  19. ncbi Effect of human corneal keratocytes and retinal pigment epithelial cells on the mechanical properties of micropatterned collagen films
    Nihal E Vrana
    METU, BIOMAT, Department of Biological Sciences, Biotechnology Research Unit, 06531 Ankara, Turkey
    Biomaterials 28:4303-10. 2007
    ..This study showed that cell, especially keratocyte, presence compensates for the degradation of collagen films and improve the overall mechanical properties of the engineered tissue...
  20. ncbi Corneal thickness- and age-related biomechanical properties of the cornea measured with the ocular response analyzer
    Aachal Kotecha
    Glaucoma Research Unit, Moorfields Eye Hospital, London, United Kingdom
    Invest Ophthalmol Vis Sci 47:5337-47. 2006
    ..In the validation study, the purposes were to investigate the association between CH and both age and central corneal thickness (CCT) and the agreement between ORA and Goldmann applanation tonometer (GAT) IOP measurements...
  21. ncbi Influence of keratocytes and retinal pigment epithelial cells on the mechanical properties of polyester-based tissue engineering micropatterned films
    Pinar Zorlutuna
    METU, BIOMAT, Department of Biological Sciences, Biotechnology Research Unit, Ankara 06531, Turkey
    Biomaterials 28:3489-96. 2007
    ..It could, therefore, be concluded that cell seeding plays a positive role in strengthening a tissue engineered construct, and cell type has a significant influence on the extent of this improvement...