Pars plana vitrectomy for vitreoretinal interface disorders coincident with intermediate stage age-related macular degeneration.

Background And Aims: Currently around 67 million people in Europe are affected by some form of age-related macular degeneration (AMD). As most known types of vitreoretinal (VR) interface disorders can coexist with AMD and as we can favourably affect the former with vitreoretinal surgery, our goal was to evaluate the results of vitreoretinal interface disorder surgery with macular peeling in relation to coincident intermediate stage AMD.

Methodology: This was a retrospective evaluation of eyes operated with 25-gauge pars plana vitrectomy (PPV).

Optimal Tuning of Range-Separated Hybrids for Solvated Molecules with Time-Dependent Density Functional Theory.

The applicability range of density functional theory (DFT) can be improved with no additional parametrization by imposing some exact conditions. Enforcing equality between the orbital energy of the highest occupied Kohn-Sham orbital and ionization energy, determined from the total energy difference between neutral and ionized states (ΔKS), leads to the concept of optimally tuned range-separated hybrid functionals. Here, we present an alternative tuning scheme for range-separated hybrid functionals based on enforcing the equality between the ΔKS ionization energy and the ionization energy calculated by means of the time-dependent DFT using the concept of ionization as an excitation to the distant center (OT-IEDC scheme).

Efficient modeling of liquid phase photoemission spectra and reorganization energies: Difficult case of multiply charged anions.

An efficient approach for quantitative modeling of liquid phase photoelectron spectra, reorganization energies, and redox potentials with DFT-based molecular dynamics simulations is presented. The method is based on a large scale cluster-continuum approach combined with the so-called reflection principle (RP). Finite size clusters of solute molecules with solvating water molecules are at first generated using either classical molecular dynamics or molecular dynamics with a quantum thermostat which accounts for nuclear quantum effects.

Ultraviolet photochemical reaction of [Fe(III)(C2O4)3](3-) in aqueous solutions studied by femtosecond time-resolved X-ray absorption spectroscopy using an X-ray free electron laser.

Time-resolved X-ray absorption spectroscopy was performed for aqueous ammonium iron(III) oxalate trihydrate solutions using an X-ray free electron laser and a synchronized ultraviolet laser. The spectral and time resolutions of the experiment were 1.3 eV and 200 fs, respectively.