PURPOSE To evaluate the safety and efficacy of implantation of a capsular tension ring (CTR) and posterior chamber intraocular lens (PCIOL) after lens extraction in subluxated cataracts. SETTING Department of Ophthalmology,General Hospital of PLA, Beijing, China. DESIGN Prospective case series. METHODS We selected 36 eyes in 34 patients with zonular dialysis <150°. After emulsification an...

Background: Alopecia areata is a patchy hair loss that may occur in any hair bearing area on the body. There are many reports of ocular abnormalities such as lens and retinal changes in alopecia areata. Objective: To evaluate ocular alterations in alopecia areata with regard to the lens and retina. Patients & Methods: Seventy three patients with alopecia areata including 34 males and 39 f...

ABSTRACT Characterizing a planet detected by microlensing is hard if the planetary signal weak or lens-source relative trajectory far from caustics. However, statistical analyses of demography must include those planets to accurately determine occurrence rates. As part systematic modelling effort in context &amp;gt;10-yr retrospective analysis MOA’s survey observations build an extended MOA sam...

introduction: tomographical maps from the serial sections for light microscopy were prepared and reconstructed by autocad software. materials and methods: in this study, the three-dimensional reconstruction method was used and the following results were obtained (see below). results: 1) the surface ectodermal epithelium was thick and invaginated. 2) the invagination of surface ectodemal epithel...

A tunable hemispherical imaging system with zoom capability was recently developed by exploiting heterogeneous integration of rigid silicon photodetectors on soft, elastomeric supports, in designs that can facilitate tunable curvature for both the lens and detector. This paper reports analytical mechanics models for the soft materials aspects of the tunable lenses and detector surfaces used in ...

We present a technique that allows measuring the field of an x-ray line focus using far-field intensity measurements only. One-dimensional phase retrieval with transverse translation diversity is used to recover a hard x-ray beam focused by a compound kinoform lens. The reconstruction is found to be in good agreement with independent knife-edge scan measurements taken at separated planes. The a...

An instrument for high-resolution imaging and tomography has been built at the APS beamline 34 ID-C, Argonne National Laboratory. In-line phase contrast tomography can be performed with micrometer resolution. For imaging and tomography with resolution better than 100nm a hard X-ray microscope has been integrated to the instrument. It works with a Kirkpatrick-Baez (KB) mirror as condenser and a ...

The databases community works hard on the scale, performance, and correctness of the storage and query processing systems that our users depend on. Researchers are therefore frustrated to see less principled, and often incorrect 2010s implementations of concepts that were introduced in the 1970s. The lens of usability can help us understand how certain systems see adoption, regardless of the so...

Homocystinuria is of particular interest to ophthalmologists, associated as it is with sub-luxated or dislocated lenses in over go per cent. of cases. It was first described by Carson and Neill (I962) and well over I00 cases have since been reported. The subject has recently been reviewed by Cusworth and Dent (I969) and by FranSois (1970). It is our purpose to discuss the management of anterior...

We report on a type of linear zone plate for nanometer-scale focusing of hard x rays, a multilayer Laue lens (MLL), produced by sectioning a multilayer and illuminating it in Laue diffraction geometry. Because of its large optical depth, a MLL spans the diffraction regimes applicable to a thin Fresnel zone plate and a crystal. Coupled wave theory calculations indicate that focusing to 5 nm or s...