目的:调查角膜塑形镜对近视儿童脉络膜厚度和脉络膜轮廓的长期影响。方法:受试者来自一项2年的随机对照试验。研究对象为年龄8~12岁、等效球镜在-1.00~-6.00 D的儿童(n=80),这些研究对象被随机分配到对照组(n=40)和角膜塑形镜组(n=40)。本研究在基线和1、6、12、18、24个月的随访中收集光学相干断层扫描图像(optical coherence tomography,OCT),然后基于OCT图像计算脉络膜厚度和脉络膜轮廓。在这些随访点也同时测量了眼轴长度(axial length,AL)和其他眼生物学参数。结果:在2年内,对照组的脉络膜厚度随时间变薄,脉络膜轮廓变得更加后凸(均P<0.001)。角膜塑形镜可以改善脉络膜厚度(均P<0.001),并在所有随访中维持脉络膜轮廓不后凸(均P<0.05)。在角膜塑形镜组中,脉络膜轮廓在颞侧的变化小于鼻侧(P=0.008),而脉络膜厚度在颞侧以黄斑中心凹为中心、直径3 mm线性扫描区域的增厚更明显(P<0.001)。2年内脉络膜厚度的变化与对照组中2年内AL变化呈负相关(r=-0.52,P<0.001),然而,这一规律被角膜塑形镜打破(r=-0.05 P=0.342)。在多变量回归模型中校正其他变量后,角膜塑形镜对脉络膜厚度的影响是稳定的。结论:角膜塑形镜可以改善脉络膜厚度并维持脉络膜轮廓,但这种效果在长期内趋于减弱。
Objective: To investigate the long-term effect of orthokeratology on the choroidal thickness and choroidal contour in myopic children. Methods:Subjects were from a conducted 2-year Randomized Clinical Trial. Children (n=80) aged 8-12 years with spherical equivalent refraction of -1.00 to -6.00 D were randomly assigned to the control group (n=40) and ortho-k group (n=40). OCT images were collected at the baseline, 1-, 6-, 12-, 18-, and 24-month visits, then the choroidal thickness and choroid contour were calculated. Axial length (AL) and other ocular biometrics were also measured. Results: During two years, in the control group, the choroidal thickness became thinning and the choroidal contour became prolate with time at all visits (all P<0.001). Ortho-k can improve the choroidal thickness (all P<0.001) and maintain the choroidal contour at all visits (all P<0.05). In the ortho-k group, the choroidal contour was less changed in the temporal than nasal (P=0.008), and the choroidal thickness was more thickening in the temporal 3 mm (P<0.001). Two-year change in choroidal thickness was significantly associated with the two-year AL change in the control group (r=-0.52, P<0.001), however, this trend was broken by ortho-k (r=-0.05, P=0.342). After being adjusted by other variables in the multivariable regression model, the effect of ortho-k on choroidal thickness was stable. Conclusions: In a short term, ortho-k can improve the choroidal thickness and maintain the choroidal contour, but this effect diminished in a long term. Further study with larger sample size and longer follow-up is warranted to refine this issue.
真菌性眼内炎是临床上少见的眼内感染疾病。因为其诊断延迟和抗真菌药物的有效性有限,因此真菌性眼内炎常常导致视力严重损害。按照感染性途径,真菌性眼内炎包括内源性和外源性,其中外源性眼内炎常见,进展较快,眼部手术术后感染是常见原因之一。小梁切除术是抗青光眼滤过性手术,是目前手术治疗青光眼的有效方法之一。滤过泡相关性眼内炎是其并发症之一,对患者视功能的损害尤为严重。本文通过回顾1例滤过泡相关性真菌性眼内炎患者的临床病例资料,讨论及分析滤过泡相关性的真菌性眼内炎的危险因素及诊治方法。
Fungal endophthalmitis is a disease which is a rare kind of interocular infection in clinic. Fungal endophthalmitis often results in severe visual impairment because of delayed diagnosis and limited effectiveness of antifungal drugs.Fungal endophthalmitis includes endogenous and exogenous endophthalmitis which is common and progresses rapidly. Postoperative infection is one of the common causes of fungal endophthalmitis. Trabeculectomy is an anti-glaucoma filtering operation, and it is one of the effective methods for glaucoma surgery at present. Glaucoma-filtering bleb infection is one of the complications of trabeculectomy, which can lead to severe visual impairment.In this article, we analyzed and discussed the risk factors, diagnosis and treatment methods about the filtering bleb-associated fungal endophthalmitis.