scholarly journals Anterior Corneal, Posterior Corneal, and Lenticular Contributions to Ocular Aberrations

2016 ◽  
Vol 57 (13) ◽  
pp. 5263 ◽  
Author(s):  
David A. Atchison ◽  
Marwan Suheimat ◽  
Ankit Mathur ◽  
Lucas J. Lister ◽  
Jos Rozema
Keyword(s):  
Ocular Aberrations

scholarly journals Optimization of Virtual Shack-Hartmann Wavefront Sensing

Sensors ◽  
2021 ◽  
Vol 21 (14) ◽  
pp. 4698
Author(s):  
Xian Yue ◽  
Yaliang Yang ◽  
Fei Xiao ◽  
Hao Dai ◽  
Chao Geng ◽  
...  
Keyword(s):  
Optimization Methods ◽  
Wavefront Sensing ◽  
Noise Performance ◽  
Zero Padding ◽  
Ocular Aberrations ◽  
Processing Procedure ◽  
Wavefront Error ◽  
Before And After ◽  
Calculation Algorithms ◽  
Normal Human

Virtual Shack–Hartmann wavefront sensing (vSHWS) can flexibly adjust parameters to meet different requirements without changing the system, and it is a promising means for aberration measurement. However, how to optimize its parameters to achieve the best performance is rarely discussed. In this work, the data processing procedure and methods of vSHWS were demonstrated by using a set of normal human ocular aberrations as an example. The shapes (round and square) of a virtual lenslet, the zero-padding of the sub-aperture electric field, sub-aperture number, as well as the sequences (before and after diffraction calculation), algorithms, and interval of data interpolation, were analyzed to find the optimal configuration. The effect of the above optimizations on its anti-noise performance was also studied. The Zernike coefficient errors and the root mean square of the wavefront error between the reconstructed and preset wavefronts were used for performance evaluation. The performance of the optimized vSHWS could be significantly improved compared to that of a non-optimized one, which was also verified with 20 sets of clinical human ocular aberrations. This work makes the vSHWS’s implementation clearer, and the optimization methods and the obtained results are of great significance for its applications.

scholarly journals Long-term adaptation to ocular aberrations alters visual processing of spatial frequency information

2016 ◽  
Vol 16 (12) ◽  
pp. 554
Author(s):  
Antoine Barbot ◽  
Krystel Huxlin ◽  
Duje Tadin ◽  
Geunyoung Yoon
Keyword(s):  
Spatial Frequency ◽  
Visual Processing ◽  
Frequency Information ◽  
Ocular Aberrations

scholarly journals Myopia and peripheral ocular aberrations

2009 ◽  
Vol 9 (10) ◽  
pp. 15-15 ◽  
Author(s):  
A. Mathur ◽  
D. A. Atchison ◽  
W. N. Charman
Keyword(s):  
Ocular Aberrations

Temporal dynamics of ocular aberrations: monocular vs binocular vision

2009 ◽  
Vol 29 (3) ◽  
pp. 256-263 ◽  
Author(s):  
A. Mira-Agudelo ◽  
L. Lundström ◽  
P. Artal
Keyword(s):  
Binocular Vision ◽  
Temporal Dynamics ◽  
Ocular Aberrations
Sign in / Sign up

Export Citation Format

Share Document