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排序方式: 共有133条查询结果,搜索用时 15 毫秒
71.
Jaime Levy Tova Lifshitz MD Itamar Klemperer MD Boris Knyazer MD Zach Ashkenazy MD Assaf Kratz MD Nadav Belfair MD 《Canadian journal of ophthalmology. Journal canadien d'ophtalmologie》2009,44(5):529-533
Objective: To assess the effect of Nd:YAG laser posterior capsulotomy on ocular wave front aberrations. Study Design: Retrospective comparative study.Participants: Twenty-four eyes of 24 consecutive pseudophakic patients with symptomatic PCO, who presented for Nd:YAG laser posterior capsulotomy at our clinic, were included in this study.Methods: The wave front aberrations of the entire optical path of 24 pseudophakic eyes of 24 patients before, and 1 month after, Nd:YAG laser posterior capsulotomy were measured using the Nidek Optical Path Difference (OPD) scan aberrometer. Total, tilt, and high-order aberrations, and total coma, total trefoil, total tetrafoil, total spherical, and total high astigmatism aberrations were analyzed statistically. Secondary measures included changes in visual acuity and refraction, and repeatability of wave front measurements in the fellow eye.Results: Before Nd:YAG laser posterior capsulotomy, the total higher-order aberrations root mean-square (RMS) wave front aberration was 2.08 (SD 2.20) μm, with total trefoil being a major contributor at 1.19 (SD 1.15) μm. One month after the procedure, significant decreases in total, tilt, and high-order aberrations, and total trefoil, total tetrafoil, total spherical, and total high astigmatism aberrations were noted (p < 0.05). No significant changes in total coma aberrations were found (p > 0.05). Additionally, significant improvement in visual acuity without significant change in refraction was observed. No statistically significant differences were detected in any of the RMS values of wave front measurements taken 1 month later in the fellow eye.Conclusions: Nd:YAG laser posterior capsulotomy causes significant decrease in ocular wave front aberrations measured using the Nidek-OPD scan aberrometer, which can account for a better optical quality after the procedure. Further research to examine the impact of wave front aberrations in visual function after Nd:YAG laser posterior capsulotomy is needed. 相似文献
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Siefart Van Eweyk Berliner Melchior Ötvös v. Liebermann Rominger Ebstein Moog Süpfle Parrisius Albrecht J. Bauer Fröhlich Lauber Helmreich Nonnenbruch Klieneberger Klemperer 《Journal of molecular medicine (Berlin, Germany)》1923,2(11):515-522
Ohne Zusammenfassung 相似文献
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Alexander Iribarne Benjamin M. Westbrook David J. Malenka Joseph D. Schmoker Jock N. McCullough Bruce J. Leavitt Paul W. Weldner Joseph DeSimone Robert S. Kramer Reed D. Quinn Elaine M. Olmstead John D. Klemperer Gerald L. Sardella Cathy S. Ross Anthony W. DiScipio 《The Annals of thoracic surgery》2018,105(3):709-714
77.
Contrasting splenic mechanisms in the blood clearance of red blood cells and colloidal particles. 总被引:5,自引:0,他引:5
M A Klausner L J Hirsch P F Leblond J K Chamberlain M R Klemperer G B Segel 《Blood》1975,46(6):965-976
We have studied the blood clearance and organ uptake of colloidal particles and of antibody-coated and chemically treated Na2 51Cr O4-labeled erythrocytes (RBC) in mice. Hepatic and splenic uptake of both colloidal particles and autologous RBC coated with rabbit antibody were reduced significantly following pretreatment of animals with cortisone acetate. Hepatic removal of RBC previously treated in vitro with N-ethyl-maleimide (NEM) or phenylhydrazine-HCl (PHZ) was similarly depressed by pretreatment with cortisone. In contrast, the splenic uptake of NEM- and PHZ-altered erythrocytes was unaffected by cortisone. Scanning and transmission electron microscopic examination of perfused spleens from PHZ-injected animals demonstrated extensive mechanical trapping of Heinz body-containing RBC in sinus wall apertures, whereas little erythrophagocytosis was observed. These studies suggested that, while clearance of inert particulate matter and of antibody-coated RBC from the blood occurred primarily by a cortisone-suppressible, presumably phagocytic process in the spleen, chemically altered RBC were removed primarily by a cortisone-insensitive filtration process in the splenic microvasculature. 相似文献
78.
G. Klemperer 《Langenbeck's archives of surgery / Deutsche Gesellschaft fur Chirurgie》1908,95(1-5):304-309
Ohne Zusammenfassung 相似文献
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