Light scattering is the main limitation for optical imaging. However, light can be focused through or inside turbid media by spatially shaping incident wavefront. Wavefront ultimately limited available photon budget. We developed a new ‘dual reference’ wavefront algorithm that optimally uses light. Our method allows multi-target shaping, making it suitable transmission matrix measurements trans...

A new adaptive optics retinal imaging system is presented that is based on the principles of digital holography and dispenses with the wavefront sensor and wavefront corrective element of the conventional adaptive optics system. OCIS codes: 090.1995; 110.1080; 170.4470

PURPOSE To provide an overview of the clinical results of different ablation profiles based on wavefront technology and discuss their characteristics and limitations. METHODS Literature review of studies reporting results of ablation profiles based on wavefront technology in virgin healthy eyes. RESULTS Over the past 10 years, a large number of studies comparing different treatment algorith...

Flatness of the wavefront diffracted by grating can be mandatory for some applications. At ambient temperature, the wavefront diffracted by a volume phase holographic grating (VPHG) is well mastered by the manufacturing process and can be corrected or shaped by postpolishing. However, to be used in cooled infrared spectrometers, VPHGs have to stand and work properly at low temperatures. We pres...

An innovative iterative search method called the synthetic phase-shifting (SPS) algorithm is proposed. This search algorithm is used for maximum-likelihood (ML) estimation of a wavefront that is described by a finite set of Zernike Fringe polynomials. In this paper, we estimate the coefficient, or parameter, values of the wavefront using a single interferogram obtained from a point-diffraction ...

a T p HE PRESENCE OF OPTICAL ABERRATIONS THAT BLUR retinal images were the subject of popular lectures by Helmholtz in the 1860s, and led him to state: Now, it is not too much to say that if an optician wanted o sell me an instrument which had all these defects, I hould think myself justified in blaming his carelessness in he strongest terms and giving him back his instrument.”1 ecently, the av...

The solar grating spectrometer is an essential tool to study the thermodynamics properties of the solar atmosphere with different height distributions, but its imaging performance will be degraded by the wavefront aberration generalized by the atmospheric turbulence. On the other hand, the narrow slit of the grating spectrometer will filter the wavefront aberration to some extent. The influence...

Measurement of wavefront aberrations in human eyes has become a reliable, quantitative way of assessing the optical impact of experimental and corrective ocular manipulations. Wavefront measures have also been performed in several other species, but never in cats, an animal model of choice for many ocular studies. Our goal in this study was to measure wavefront aberrations reliably in live, awa...