Visual Outcomes and Patient Satisfaction After Bilateral Sequential Implantation of a Capsular Bag IOL and a Supplementary Sulcus-Fixated Trifocal IOL.

Purpose: To assess visual and refractive outcomes and patient satisfaction after bilateral sequential implantation of a primary capsular bag intraocular lens (IOL) and a supplementary sulcus-fixated trifocal IOL.

Methods: All patients had bilateral implantation of a mono-focal IOL in the capsular bag followed by a supplementary trifocal IOL (Sulcoflex 703F, Rayner Intraocular Lenses Limited) in the sulcus. Patients were evaluated for monocular uncorrected and corrected distance visual acuity, binocular uncorrected and corrected distance, intermediate and near visual acuity, photopic and mesopic contrast sensitivity, defocus curves, visual symptoms, spectacle independence, and patient satisfaction at 1 and 6 months postoperatively.

Psychophysical Vision Simulation of Diffractive Bifocal and Trifocal Intraocular Lenses.

Purpose: The visual performance of monofocal, bifocal, and trifocal intraocular lenses was evaluated by human individuals using a vision simulator device. This allowed investigation of the visual impression after cataract surgery, without the need actually to implant the lenses.

Methods: The randomized, double-masked, three-way cross-over study was conducted on 60 healthy male and female subjects aged between 18 and 35 years.

Ultrafast VLS growth of epitaxial beta- Ga(2)O(3) nanowires.

Well-defined monoclinic nanostructures of beta- Ga(2)O(3) were grown in a chemical vapor deposition apparatus using metallic gallium and oxygen as sources. Stable growth conditions were deduced for nanorods, nanoribbons, nanowires and cones. The types of nanostructures are determined by the growth temperature.

An intercepted feedback mode for light sensitive spectroscopic measurements in atomic force microscopy.

In most atomic force microscopes (AFMs), the motion of the tip is detected by the deflection of a laser beam shining onto the cantilever. AFM applications such as scanning capacitance spectroscopy or photocurrent spectroscopy, however, are severely disturbed by the intense stray light of the AFM laser. For this reason, an intercepted feedback method was developed, which allows to switch off the laser temporarily while the feedback loop keeps running.

Two color, low intensity photocurrent feedback for local photocurrent spectroscopy.

In this work, we introduce a two color, low intensity photocurrent feedback method for photocurrent spectroscopy utilizing an atomic force microscope (AFM). In most applications, measurements with weak optical excitations are not feasible with an AFM because the powerful AFM feedback laser severely disturbs the measurements. Therefore, we have developed a feedback system based on the pressure dependent Schottky barrier height at the tip-sample interface.