OCTOBER 2008 I CATARACT & REFRACTIVE SURGERY TODAY I 53 I n late 1999, IntraLase Corp. (now owned by Advanced Medical Optics, Inc., Santa Ana, CA) obtained a 510k clearance for its beta 6-kHz femtosecond laser to create LASIK flaps.1,2 The power of subsequent models increased to generation 1 (10 kHz),3,4 generation 2 (15 kHz),5 generation 3 (30 kHz),6,7 generation 4 (60 kHz)8 and, in April 2008...

A numerical method for an inverse problem for an elliptic equation with the running source at multiple positions is presented. The so-called “approximate global convergence” property of this method is proved for the discrete case. The performance of the algorithm is verified on experimental data for Diffusion Optical Tomography. Direct applications are in near-infrared laser imaging technology ...

We present the first autostereoscopic visualization system to project a real-time (live) medical data slice in-situ by use of a holographic optical element. Our system can project an essentially (1 mm in-slice accuracy) viewpoint-independent real-time virtual image into its actual anatomic location, enabling natural hand-eye coordination to guide invasive procedures. Our system does not require...

Specially designed metal-dielectric composites can have a negative refractive index in the optical range. Specifically, it is shown that arrays of single and paired nanorods can provide such negative refraction. For pairs of metal rods, a negative refractive index has been observed at 1.5 μm. The inverted structure of paired voids in metal films may also exhibit a negative refractive index. A s...

The dynamical stability of dark solitons in dipolar Bose-Einstein condensates is studied. For standard short-range interacting condensates, dark solitons are unstable against transverse excitations in two and three dimensions. On the contrary, due to its nonlocal character, the dipolar interaction allows for stable 3D stationary dark solitons, opening a qualitatively novel scenario in nonlinear...

PT-Symmetry is one of the interesting topics in quantum mechanics and optics. One of the demonstration of PT-Symmetric effects in optics is appeared in the nonlinear directional coupler (NLDC). In the paper we numerically investigate the stability of temporal bright solitons propagate in a PT-Symmetric NLDC by considering gain in bar and loss in cross. By using the analytical solutions of pertu...

A new method for repackaging optical metamaterials formed from quartz spheres/fibers of various diameters is proposed ultraviolet C disinfection infected liquids by pathogens (viruses and bacteria). © 2022 The Author(s) OCIS codes: 170.0170 - Medical optics biotechnology; 120.3890 instrumentation

In order to use 3D imaging technology in medical treatment, some strict rules must be followed. This is consistent with the previous article [1] that five conditions followed obtain ideal three‐dimensional (3D) imaging. paper continues provide important supplements. It importent especially remote telemedicine. The condition of "simultaneous arrival" should added second make it more accurate. Ot...

in the surgical treatment of malignant tumors, it is crucial to characterize the tumor as precisely as possible. the determination of the exact tumor location as well as the analysis of its properties is very important in order to obtain an accurate diagnosis as early as possible. in neurosurgical applications, the optical, non-invasive and in situ techniques allow for the label-free analysis o...

The demand for holographic recording materials has been ever increasing for the past few decades. Photorefractive materials have been studied extensively as candidate recording media. They offer high index modulation with reversible recording that make them very attractive for applications such as threedimensional holographic displays, adaptive optics, optical data storage and medical optics. R...