Photography, grid

Technique Usefulness. For qualitative purposes, grid photography and the use of a polarizer were identified as the simplest measurements for determining void areas. However, voids which occupy relatively small areas are unlikely to be detected using these techniques. Care must also be taken not to confuse glass or mirroring imperfections, as determined by visual inspection, with voids. 

The microscopist locates specimen areas suitable for photography by searching the EM grid at very low magnification (<3000 X) to keep the irradiation level very low (<0.05 e / A ) while assessing sample quality. In microscopes operated at 200 keV or higher, where image contrast is very weak, it is helpful to perform the search procedure with the assistance of a CCD camera or a video-rate TV-... 

Hyd roxychloroquine Oral 200-300 mg twice daily after 1-2 months may increase to 200 mg once or twice daily Baseline color fundus photography and automated central perimetric analysis Ophthalmoscopy every 9-12 months and Amsier grid at home every 2 weeks... 

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