Robert Augusteyn

Relationship of the cornea and globe dimensions to the changes in adult human crystalline lens diameter, thickness and power with age

Ashik Mohamed, Sushma Nandyala, Arthur Ho, Fabrice Manns, Jean-Marie A Parel, Robert C Augusteyn

Conference Proceedings  |  2021  |  EXPERIMENTAL EYE RESEARCH

It is well known that human crystalline lens shape, dimensions and optical properties change throughout life and influence whole e..

Morphometric analysis of in vitro human crystalline lenses using digital shadow photogrammetry

Ashik Mohamed, Heather A Durkee, Siobhan Williams, Fabrice Manns, Arthur Ho, Jean-Marie A Parel, Robert C Augusteyn

Journal article  |  2021  |  EXPERIMENTAL EYE RESEARCH

There is a great need for accurate biometric data on human lenses. To meet this, a compact tabletop optical comparator, the minish..

3D OCT-based geometrical changes of human crystalline lenses during simulated accommodation in a lens stretcher

Eduardo Martinez-Enriquez, Alberto De Castro, Ashik Mohamed, Bianca Maceo Heilman, Siobhan Williams, Sushma Nandyala, Marco Ruggeri, Jean-Marie A Parel, Robert Augusteyn, Arthur Ho, Fabrice Manns, Susana Marcos

Conference Proceedings  |  2020  |  INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE

Influence of lens geometry on accommodation: Verification with an improved finite element model

Arthur Ho, Chisanupong Thawanyavitchajit, Sangarapillai Kanapathipillai, Robert Augusteyn, Fabrice Manns

Conference Proceedings  |  2020  |  INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE

Isolated human crystalline lens spherical aberration: Experimental measurements and predictions from OCT-based geometry

Ashik Mohamed, Siobhan Williams, Eduardo Martinez-Enriquez, Alberto De Castro, Marco Ruggeri, Bianca Maceo Heilman, Yu-Cherng Chang, N Geetha Sravani, Cornelis Rowaan, Alex Gonzalez, Shravya Sri Durgam, Arthur Ho, Robert C Augusteyn, Jean-Marie Parel, Susana Marcos, Fabrice Manns

Conference Proceedings  |  2019  |  INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE

Finite element model of the influence of zonules-capsule attachment position on accommodation amplitude

Arthur Ho, Min Aung Phyo, Sangarapillai Kanapathipillai, Robert C Augusteyn, Fabrice Manns

Conference Proceedings  |  2019  |  INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE

Estimating kangaroo age from lens weight

RC Augusteyn

Journal article  |  2019  |  Australian Mammalogy

In a recent publication, Mayberry et al. (2017) presented a method for estimating western grey kangaroo age from the weights of dr..

Human lens weights with increasing age

Ashik Mohamed, Robert C Augusteyn

Journal article  |  2018  |  MOLECULAR VISION

Purpose: To evaluate the changes with age in human lens wet and dry weights. Methods: All procedures were performed by the same pe..

Full shape crystalline lens geometrical changes with age from 3-D OCT images in vivo and ex vivo

Eduardo Martinez-Enriquez, Ashik Mohamed, Marco Ruggeri, Miriam Velasco-Ocana, Siobhan Williams, Bianca Maceo Heilman, Alberto De Castro, Pablo Perez-Merino, N Geetha Sravani, Virender Sangwan, Jean-Marie A Parel, Robert C Augusteyn, Arthur Ho, Fabrice Manns, Susana Marcos

Conference Proceedings  |  2018  |  INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE

On the contribution of the nucleus and cortex to human lens shape and size.

Robert C Augusteyn

Journal article  |  2018  |  Clin Exp Optom

BACKGROUND: The shape of the human lens changes from almost spherical at birth to ellipsoid due to a decrease in sagittal thicknes..