![]() ![]() ![]() A calibrated Gullstrand-type model eye was used for this study. To determine the effect of the laser unit on photodynamic therapy (PDT) spot size. The effect of laser unit on photodynamic therapy spot size.Īnsari-Shahrezaei, Siamak Binder, Susanne Stur, Michael Through an examination of Zeiss’ corporate correspondence, propaganda, and contemporary international and domestic press, this talk argues that in advertising the planetarium in Germany and abroad, the Zeiss company relied on competing constructions of a post-war German identity rooted in conflicting understandings of space. On the other, Zeiss recognized that a large part of the planetarium’s domestic appeal lay in the romance of its German origins. This talk argues that on one hand, Zeiss saw the planetarium as an opportunity to reintroduce German engineering to a skeptical international market. By 1933, there were a dozen planetaria in Germany alone, and nearly a dozen more abroad. The Carl Zeiss Company of Jena, Germany, introduced the first prototype planetarium in the fall of 1923. The Planetarium and the Carl Zeiss Corporation, 1923-1933 The deviation from expected size increased with larger spot size using the Coherent laser. PDT spot size at the retina appears to be consistently smaller than expected for the Coherent laser while the spot size was consistently within 10% of expected size for the Zeiss laser. Multivariate analysis demonstrated that percentage of expected spot size decreased with larger spot diameter (P =. Spot size at the retina averaged 87% of expected spot size for the Coherent Opal laser (Coherent Inc, Santa Clara, California, USA) and 104% of expected spot size for the Zeiss Visulas laser (Carl Zeiss Meditec Inc, Dublin, California, USA)(P =. Spot size at the retina was determined by measuring the ratio of disc diameter to spot diameter in Adobe Photoshop (San Jose, California, USA) and applying this ratio to the OIS disc measurements. Slit-lamp photographs were taken of the PDT laser spot focused on the retina adjacent to the optic disc, using various spot sizes in combination with 3 different contact lenses and 2 different lasers. Fundus photographs were taken of 1 eye of each of 10 subjects with the WinStation 4000 fundus photography system (OIS Ophthalmic Imaging Systems, Sacramento, California, USA) disc size was calculated using OIS software. To determine the accuracy of the photodynamic therapy (PDT) laser spot size on the retina as generated by 2 Food and Drug Administration (FDA)-approved lasers. Ranchod, Tushar M Brucker, Alexander J Liu, Chengcheng Cukras, Catherine A Hopkins, Tim B Ying, Gui-Shuang It's considered that objective measurement giving by them must be incorporate in the rigorous analysis of each glaucomatous patientĮvaluation of actual vs expected photodynamic therapy spot size. This is a review about some contributions of Scanning Laser Polarimetry (GDx VCC, Carl Zeiss Meditec, Dublin, CA), Confocal Scanning Laser (Heidelberg Retina Tomograph HRT, Heidelberg Engineering Inc.) and Optical Coherence Tomography (Stratus OCT, Carl Zeiss Meditec, Alemania) in the diagnosis and follow up of Glaucoma. Now a day we can't consider the strict follow up in Glaucoma without the use of the digital analysis of image system of the optic nerve head and the retinal nerve fiber layer. International Nuclear Information System (INIS)įernandez Argones, Liamet Piloto Diaz, Ibrain Coba Penna, Maria Josefa Perez Tamayo, Bertila Dominguez Randulfe, Marerneda Trujillo Fonseca, Katia Systems of imaging digital systems in case of glaucoma ![]()
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