OBJECTIVE To evaluate the efficacy and safety of 1-mg and 4-mg doses of preservative-free intravitreal triamcinolone in comparison with focal/grid photocoagulation for the treatment of diabetic macular edema (DME). DESIGN Multicenter, randomized clinical trial. PARTICIPANTS Eight hundred forty study eyes of 693 subjects with DME involving the fovea and with visual acuity of 20/40 to 20/320....

Laser-Induced Carbonization Laser-induced carbonization is a viable method for creating anticounterfeiting tags on flexible printed circuit boards. In article number 2211762, Sunkook Kim, Hogun Park, and co-workers illustrate that using laser, pattern can be configured in any desired shape, such as fingerprint. The laser beam used to create random size carbonized spots are distributed according...

PURPOSE The purpose of this study was to determine whether eyes with center-involved diabetic macular edema, treated with focal/grid photocoagulation, in which there is a reduction in central subfield thickness (CST) measured with optical coherence tomography after 16 weeks, will continue to improve if retreatment is deferred. METHODS This is a prospective, multicenter, observational, single-...

The present work is devoted to the experimental determination of uniformity ion flux density on a substrate with an increased size (~200 cm2 ) in order form nanostructures by laser-plasma method. system for deposition consists erosion laser torch target material and located vacuum chamber. For smooth adjustment parameters deposited particles substrate, grid between which negative potential appl...

By using the second harmonic radiation of a 1543 nm diode laser, several predicted rovibronic transitions of molecular iodine were observed for the first time. We demonstrated that the absolute frequency of a 1534 nm external-cavity diode laser could be frequency-stabilized to a 1MHz instability (for one second averaging time) by locking the frequency of the second harmonic generation to the de...

We experimentally demonstrate a Raman fiber laser based on multiple point-action fiber Bragg grating reflectors and distributed feedback via Rayleigh scattering in an ~22-km-long optical fiber. Twenty-two lasing lines with spacing of ~100 GHz (close to International Telecommunication Union grid) in the C band are generated at the watt level. In contrast to the normal cavity with competition bet...

Diabetic macular edema is considered the most important factor related to visual impairment in patients with diabetic retinopathy. Together with the use of grid and focal laser photocoagulation, today the intravitreal administration of pharmacotherapies represents the standard of care for the treatment of this complication: anti-vascular endothelium growth factor agents and steroids are the dru...

Nonlinear wave motion in dispersive media is solved numerically. The model applies to laser propagation in a relativistic plasma. The latter causes, besides dispersion, nonlinear effects due to relativistic mass variation in the presence of strong laser pulses. A new variant of the Gautschi–type integrator for reducing the number of time steps is proposed as a fast solver for such nonlinear wav...