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Purpose The purpose of the study was to evaluate the outcome of the use of the temporary amniotic membrane patch (TAMP) for the treatment of primary pterygium and to investigate the mechanisms of reducing the recurrence rate.Methods Twenty eyes in 20 patients with primary pterygium underwent pterygium excision followed by TAMP for 5 days. Removed amniotic membrane (AM) was immunostained with primary antibodies CD34, c-Kit, STRO-1 and AC133.Results Within the period of follow-up (53.3±13.8 months), all the eyes showed a smooth ocular surface without recurrence of pterygium. Different grades of CD34, c-Kit, STRO-1and AC133 positive stem and progenitor cells infiltrated or attached to the stroma of patched AM, with more spindle-shaped c-Kit cells than ovoid-shaped CD34 and AC133 cells.Conclusion The temporary amniotic membrane patch is an effective and safe procedure for the treatment of primary pterygium. Absorbing excessive stem and progenitor cells may be one of the mechanisms of reducing the recurrence rate using AM.  相似文献
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俞捷心  姚克 《国际眼科杂志》2017,17(11):2126-2129

目的:观察中国患者虹膜松弛综合征(IFIS)在白内障超声乳化术中的发生率,并探究IFIS的新危险因素及其可能的预测指标。

方法:前瞻性、观察性研究。我们收集了1a内进行白内障手术的患者。记录他们的服药史、散瞳前后的瞳孔直径、IFIS发生的情况。

结果:有中国汉族的白内障手术患者807例1 068眼,共计1 068例手术纳入研究,其中34眼发生了IFIS。进行回归分析发现,以下危险因素与IFIS的发生有关:非那西丁(6.4%,OR=5.885),坦洛新(25%,OR=21.578),利血平(16.7%,OR=12.947),氯氮平(66.7%,OR=139.467)及全视网膜光凝术后(14.3%,OR=10.789)。散瞳后瞳孔直径小,尤其是小于7.25mm的患者更易于发生IFIS(P<0.001)。

结论:中国人群中IFIS的发生率是3.18%。我们发现了3个新的IFIS危险因素:利血平、氯氮平用药史和视网膜光凝术后。术前散瞳困难可能预示着IFIS的发生几率增大。  相似文献

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AIM: To identify the disease-causing mutation responsible for the presence of congenital cataract in a Chinese family. METHODS: The study recruited a four-generation Chinese pedigree affected by autosomal dominant congenital cataract (ADCC). Family history and the history of cataract extraction were recorded. Blood samples were collected from individuals for DNA extraction. Direct sequencing of congenital cataract-associated genes was performed. Single-strand conformational polymorphism and bioinformatic analysis were conducted to further study the mutation. RESULTS: Direct sequencing revealed a novel splice site mutation of c.30-2 A>G in the CRYBA3/A1 gene. The mutation co-segregated within all affected individuals in the family and was not found in unaffected members or 100 unrelated normal controls. These results were further confirmed by single-strand conformational polymorphism and bioinformatic analysis using the Human Splicing Finder and MaxEnt online software and Annovar computer software. CONCLUSION: c.30-2 A>G mutation of CRYBA3/A1 gene is a novel mutation and broadens the genetic spectrum of ADCC.  相似文献
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AIM: To explore the effects of conditioned media on the proliferation of corneal endothelial cells (CECs) and to compare the efficiency of different conditioned media (CM). METHODS: Rat CECs, corneal stromal cells (CSCs), bone marrow-derived endothelial progenitor cells (BEPCs), and bone marrow-derived mesenchymal stem cells (BMSCs) were isolated and cultured in vitro. CM was collected from CSCs, BEPCs, and BMSCs. CECs were cultivated in different culture media. Cell morphology was recorded, and gene and protein expression were analyzed. RESULTS: After grown in CM for 5d, CECs in each experimental group remained polygonal, in a cobblestone-like monolayer arrangement. Immunocytofluorescence revealed positive expression of Na+/K+-ATP, aquaporin 1 (AQP1), and zonula occludens 1 (ZO-1). Based on quantitative polymerase chain reaction (qPCR) analysis, Na+/K+-ATP expression in CSC-CM was notably upregulated by 1.3-fold (±0.036) (P<0.05, n=3). The expression levels of ZO-1, neuron specific enolase (NSE), Vimentin, paired homebox 6 (PAX6), and procollagen type Ⅷ (COL8A1) were notably upregulated in each experimental group. Each CM had a positive effect on CEC proliferation, and CSC-CM had the strongest effect on proliferation. CONCLUSION: CSC-CM, BEPC-CM, and BMSC-CM not only stimulated the proliferation of CECs, but also maintained the characteristic differentiated phenotypes necessary for endothelial functions. CSC-CM had the most notable effect on CEC proliferation.  相似文献
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AIM: To evaluate the clinical and optical outcomes after clear corneal incision cataract surgery (CICS) with three different incision sizes (1.8, 2.0 and 3.0 mm). METHODS: Eyes of 150 patients with age-related cataract scheduled for coaxial cataract surgery were randomized to three groups: 1.8, 2.0, or 3.0 mm CICS. Intraoperative data and postoperative outcomes including surgically induced astigmatism (SIA), the corneal incision thickness, wavefront aberrations and modulation transfer function (MTF) of cornea were obtained. RESULTS: There were no significant differences among the three groups in demographic characteristics and intraoperative outcome. The 1.8 and 2.0 mm microincisions showed more satisfactory clinical outcomes than the 3.0 mm incision. The 1.8 mm incision showed significantly less SIA than the 2.0 mm incision until postoperative 1mo (P<0.05), but the difference was only 0.14-0.18 D. Combined with less increased incision thickness only at postoperative 1d (P=0.013), the 1.8 mm incision presented better uncorrected distance visual acuity (UCDVA) than the 2.0 mm incision only at 1d postoperatively (P=0.008). For higher-order aberrations and other Zernike coefficients, there were no significant differences between the 1.8 mm group and 2.0 mm group (P>0.05). CONCLUSION: Converting from 3.0 mm CICS to 1.8 or 2.0 mm CICS result in better clinical and optical outcomes. However, when incision is 1.8 mm, the benefits from further reduction in size compared with 2.0 mm are limited. The necessity to reduce the incision size is to be deliberated.  相似文献
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AIM:To characterize the disease-causing mutations in a Chinese family with ectopia lentis syndrome (ELS).METHODS:Patients and their family members were given complete physical, ophthalmic, and cardiovascular examinations. Genomic DNA samples were extracted from the peripheral blood of the pedigree members and 100 healthy controls. Mutation screening was performed in the fibrillin-1 (FBN1) gene by bi-directional sequencing of the amplified products. The mutation was analyzed using two bioinformatics methods.RESULTS:A novel heterozygous c.305G>A mutation in exon 3 of FBN1 was detected. As a result of this change, a highly conserved cysteine residue was replaced by a tyrosine residue (p.C102Y). Another mutation was found in the same exon (c.303T>C), which did not change the amino acid sequence. Both mutations were discovered in each affected individual, but not in the unaffected family members, or in 100 ethnically matched controls. A bioinformatics analysis predicted that mutation p.C102Y would affect protein function.CONCLUSION:In the first epidermal growth factor-like module, we identified a novel FBN1 mutation (p.C102Y), which caused ELS in the family. Our study presented a unique phenotype, including some distinct ophthalmic findings, such as hypoplasia of the iris and anisometropia. Our results expanded the mutation spectrum of FBN1 and enriched the overall knowledge of genotype-phenotype correlations due to FBN1 mutations.  相似文献
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