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wavefront aberrations
New methods of measuring wavefront aberrations of human eyes, using the Talbot image of a two-dimensional grating as a wavefront sensor and local shift of the Talbot image to calculate tilt of the wavefront are shown.
      
Wavefront aberrations can be measured even when the obtained image is degraded by defocusing or scattering.
      
To assess optical characteristics of bifocal soft contact lenses (BCLs) in use, we measured wavefront aberrations of human eyes, of eyes with a monofocal soft contact lens (MCL), and of eyes with a BCL.
      
Optical Quality of the Eye Degraded by Time-Varying Wavefront Aberrations with Tear Film Dynamics
      
Active or adaptive optics often require the ability to characterize wavefront aberrations using natural extended sources.
      
Speckle masking imaging provides access to high-order wavefront aberrations, which predominantly originate at high atmospheric layers and are only partially corrected by the AO system.
      
Results of theoretical estimation of the sensitivity of a shear speckle interferometer intended for testing of wavefront aberrations are presented.
      
Zernike coefficients describe the wavefront aberrations of an optic accurately up to the third order.
      
As explicated in Chapter 3, wavefront aberrations manifest themselves predominantly along the axial extent of the focal volume.
      
Coe >amp; Thibos, Poster @ 5th Wavefront Congress Conclusion Determining the optimum refraction from wavefront aberrations isn't as easy as it sounds.
      
Furthermore, the influence of wavefront aberrations of the signal detected is considered.
      
Figure 5A shows PSF and simulated retinal image of the Landolt ring in an eye without higher-order wavefront aberrations.
      
However, the light source can be resolved, and its extent reduces the Strehl ratio by the same amount as 64 nm of wavefront aberrations.
      
Ocular wavefront aberrations become clinically relevant at larger pupil diameters.
      
Optical smoothing can significantly reduce wavefront aberrations that produce nonuniformities in the energy distribution of the focal spot.
      
Retinal image quality in pseudophakic eyes is limited by the wavefront aberrations of the cornea and the intraocular lens.
      
Schematic of a LWIR Twyman-Green interferometer to measure wavefront aberrations in custom made optical components.
      
Spatial Filtering Using either a single mode fiber or a pinhole as a spatial filter eliminates wavefront aberrations but introduces intensity changes.
      
To assess the relationship between apparent accommodation in pseudophakic eyes, multifocal corneal effects, and wavefront aberrations of the cornea.
      
The wavefront aberrations for the 20 minutes recovery time after a single shot were analysed.
      
 

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