OBJECTIVES Diabetic macular edema results in irreversible loss of vision and is the major cause of visual morbidity in patients with Diabetes of adult onset. DCCT trial has linked this to poorer control and increased duration of DM. laser treatment in such cases is known to reduce visual impairment by 50% for a period of 5 years. The aim of this study is to evaluate the effect of laser on visua...

We describe a new technique for investigating laser-tissue interactions based on the use of an interferometric laser exposure pattern. A Michelson interferometer is used to generate a sinusoidal fringe exposure pattern. The periodicity of the fringe pattern may be adjusted from macroscopic dimensions to a scale of microns without the need for an imaging plane. Since fringe pattern periodicity i...

We describes theoretical and experimental results for the extrinsic calibration of sensor platform consisting of a camera and a laser range finder. The proposed technique requires the system to observe a planar pattern in several poses, and the constraints are based upon data captured simultaneously from the camera and the laser range finder. The planar pattern surface and the laser scanline on...

OBJECTIVE To investigate the predictive baseline factors for a successful outcome following one dose of intravitreal triamcinolone acetonide (IVTA) in patients with macular oedema (ME) caused by branch retinal vein occlusion (BRVO). METHODS This retrospective study enrolled patients with ME (macular retinal thickness [MRT] ≥ 300 µm) due to BRVO who still had ME 3 months after grid laser photo...

Anticipating the future is a key motif of the brain, possibly supported by mental simulation of upcoming events. Rodent single-cell recordings suggest the ability of spatially tuned cells to represent subsequent locations. Grid-like representations have been observed in the human entorhinal cortex during virtual and imagined navigation. However, hitherto it remains unknown if grid-like represen...

In this paper, we explore the potential capabilities of new laser scanning-based method for direction determination. The method for fully coherent beams is extended to the case when interference pattern is produced in the turbulent atmosphere by two partially coherent sources. The performed theoretical analysis identified the conditions under which stable pattern may form on extended paths of 0...

Line outage identification in distribution grids is essential for sustainable grid operation. In this work, we propose a practical yet robust detection approach that utilizes only readily available voltage magnitudes, eliminating the need costly phase angles or power flow data. Given sensor data, many existing methods based on change-point require prior knowledge of patterns, which are unknown ...

Neural encoding of navigable space involves a network of structures centered on the hippocampus, whose neurons -place cells - encode current location. Input to the place cells includes afferents from the entorhinal cortex, which contains grid cells. These are neurons expressing spatially localized activity patches, or firing fields, that are evenly spaced across the floor in a hexagonal close-p...

Inspired by the Witkowski’s algorithm, we introduce a novel path planning and replanning algorithm – the two-way D* (TWD*) algorithm – based on a two-dimensional occupancy grid map of the environment. Unlike the Witkowski’s algorithm, which finds optimal paths only in binary occupancy grid maps, the TWD* algorithm can find optimal paths in weighted occupancy grid maps. The optimal path found by...

According to development of communications and web-based technologies in recent years, e-Learning has became very important for everyone and is seen as one of most dynamic teaching methods. Grid computing is a pattern for increasing of computing power and storage capacity of a system and is based on hardware and software resources in a network with common purpose. In this article we study grid ...