scholarly journals Extended depth of focus contact lenses vs. two commercial multifocals: Part 1. Optical performance evaluation via computed through-focus retinal image quality metrics

2018 ◽  
Vol 11 (1) ◽  
pp. 10-20 ◽  
Author(s):  
Ravi C. Bakaraju ◽  
Klaus Ehrmann ◽  
Arthur Ho
Keyword(s):  
Performance Evaluation ◽  
Image Quality ◽  
Retinal Image ◽  
Contact Lenses ◽  
Quality Metrics ◽  
Optical Performance ◽  
Depth Of Focus ◽  
Extended Depth Of Focus ◽  
Image Quality Metrics

scholarly journals 2-D Peripheral image quality metrics with different types of multifocal contact lenses

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Miguel García García ◽  
Siegfried Wahl ◽  
Dibyendu Pusti ◽  
Pablo Artal ◽  
Arne Ohlendorf
Keyword(s):  
Visual Field ◽  
Image Quality ◽  
Contact Lenses ◽  
Quality Metrics ◽  
Reference Image ◽  
Retinal Images ◽  
Resolution Limit ◽  
Myopia Progression ◽  
Image Quality Metrics ◽  
The Impact

AbstractTo evaluate the impact of multifocal contact lens wear on the image quality metrics across the visual field in the context of eye growth and myopia control. Two-dimensional cross-correlation coefficients were estimated by comparing a reference image against the computed retinal images for every location. Retinal images were simulated based on the measured optical aberrations of the naked eye and a set of multifocal contact lenses (centre-near and centre-distance designs), and images were spatially filtered to match the resolution limit at each eccentricity. Value maps showing the reduction in the quality of the image through each optical condition were obtained by subtracting the optical image quality from the theoretical physiological limits. Results indicate that multifocal contact lenses degrade the image quality independently from their optical design, though this result depends on the type of analysis conducted. Analysis of the image quality across the visual field should not be oversimplified to a single number but split into regional and groups because it provides more insightful information and can avoid misinterpretation of the results. The decay of the image quality caused by the multifocal contacts alone, cannot explain the translation of peripheral defocus towards protection on myopia progression, and a different explanation needs to be found.

Full-Reference Image Quality Metrics Performance Evaluation Over Image Quality Databases

2013 ◽  
Vol 38 (9) ◽  
pp. 2327-2356 ◽  
Author(s):  
Atidel Lahoulou ◽  
Ahmed Bouridane ◽  
Emmanuel Viennet ◽  
Mourad Haddadi
Keyword(s):  
Performance Evaluation ◽  
Image Quality ◽  
Quality Metrics ◽  
Reference Image ◽  
Full Reference ◽  
Image Quality Metrics

scholarly journals Ambiguity of objective image quality metrics: A new methodology for performance evaluation

2021 ◽  
Vol 93 ◽  
pp. 116150
Author(s):  
Manri Cheon ◽  
Toinon Vigier ◽  
Lukáš Krasula ◽  
Junghyuk Lee ◽  
Patrick Le Callet ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Image Quality ◽  
Quality Metrics ◽  
Image Quality Metrics
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