Purpose:To investigate the association between high anisometropia and the area of choroidal neovascularization (CNV) induced by krypton laser in guinea pigs and better understand the pathogenesis and prevention of myo...
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Purpose:To investigate the association between high anisometropia and the area of choroidal neovascularization (CNV) induced by krypton laser in guinea pigs and better understand the pathogenesis and prevention of myopic CNV. Methods:.Nine 3-week old male guinea pigs with anisometropia > 6.00D were randomly assigned to three groups according to examination date after laser photocoagulation (7d, 14d and 28d). All animals underwent refraction. The eye with higher myopia was used as the experimental eye, and the other as the control eye..All eyes received repeated multi-wavelength krypton laser photocoagulation treatments (wavelength: 532 nm; laser power: 400 mW; spot diameter: 50 μm; exposure time: 0.1s). Fundus photography and indocyanine green angiography (ICGA) were performed. Afterwards, the animals were sacrificed immediately,.and the eyes were enucleated and processed for histopathologic examination and flat mounts. Results: CNV appeared at 7d after laser treatment. The area of CNV peaked at 14d, and decrease in area and the presence of scarring was noted at 28 d..CNV was present in 66.7% of eyes by ICGA at 14 d..CNV could be observed under light microscopy at all three time points..At 14 d,.flat mount showed the neovascular plexus around the lesion. Semi-quantitative analysis revealed that the area of CNV in treated eyes was greater than that of control eyes. Conclusion:.Since the mechanism of CNV in this study resembles that of CNV in pathological myopia, this model can be used to investigate the etiology, pathogenesis and treatment of CNV in pathological myopia.
目的探讨经阴道内镜手术对无性生活的生育年龄患者子宫内病变的临床诊治与手术技巧。方法回顾性分析2017年1月至2021年1月首都医科大学附属复兴医院收治的无性生活生育年龄患者152例,行宫腔镜检查和/或手术及病理组织学检查。结果152例患者均成功实施经阴道宫腔镜手术,顺利切除宫腔内或宫颈良性病变和镜下子宫内膜定位活检,无宫颈裂伤、子宫穿孔、经尿道前列腺电切术(transurethral resection of prostate,TURP)综合征等并发症,处女膜医源性擦伤或裂伤16例(10.5%)。结论经阴道内镜宫腔镜手术可以在有效保护处女膜的前提下,及时准确地早期诊治宫腔内病变,有效保护其生育潜力。
Purpose:Ocular trauma occurs disproportionately in children on an annual ***,because of this frequency,other diagnoses,.such as orbital neoplasms,.can easily be ***:We report on a two-year-old boy who presented with a...
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Purpose:Ocular trauma occurs disproportionately in children on an annual ***,because of this frequency,other diagnoses,.such as orbital neoplasms,.can easily be ***:We report on a two-year-old boy who presented with a dark purple,irregularly shaped lesion on his lower left *** patient had suffered injuries twice to that ***:Axial computed tomography images demonstrated an ill-defined and inhomogeneous soft tissue mass in the lateral and posterior region of the left orbit,.with bony destruction and absorption of the adjacent orbital wall..Magnetic resonance imaging of the orbit showed a lesion involving the greater sphenoidal wing,the supraorbital wall,and the frontal *** nuchal and inguinal lymph nodes were detected by sonographic *** examination of a surgical biopsy showed an accumulation of characteristic Langerhans *** diagnosis of Langerhans cell histiocytosis was confirmed by immunohistochemical examinations positive for CD1a and ***:Orbital Langerhans cell histiocytosis is rarely encountered in ophthalmic practice,.so the ophthalmologist needs to be familiar with its presentation and work-up,.and has to be aware of possible OLCH diagnosis when a child(or even an adult)presents with prolonged and persistent eyelid edema,.even with a history of ocular trauma.
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