Anterior Segment Dysgenesis

眼前节发育不全
  • 文章类型: Journal Article
    儿童青光眼是一种罕见的疾病,从出生到青少年时期都是由房水通路异常引起的。大约50-70%的Peters异常伴有继发性儿童期青光眼。青光眼的存在会影响预后。我们报告了因Peters异常引起的继发性儿童青光眼的评估和治疗。一个5个月大的男孩从3个月大开始就出现左眼增大的抱怨。投诉伴随着令人垂涎的眼睛,并且经常在暴露于光线时关闭。左眼看起来比对侧更不透明。麻醉下检查显示,左眼眼压(IOP)为35mmHg,角膜直径为14mm。其他发现是角膜病变,弥漫性角膜水肿,buthalmos,浅前房,前粘连,和鼻区的线性狭缝状瞳孔。患者接受眼用马来酸噻吗洛尔治疗,随后进行小梁切除术。手术后1周,通过触诊评估的IOP表明右眼在正常范围内,而左眼的IOP比正常更高。眼睑痉挛,顿唇,畏光,bleb在上级,结膜下出血,buthalmos,角膜病变,角膜轻度水肿,前房图像浅,左眼眼前段可见后粘连。总之,如果在接受马来酸噻吗洛尔治疗后未观察到眼压降低,则建议进行小梁切开术和小梁切除术.手术管理的选择取决于方案的可行性。
    Childhood glaucoma is a rare disorder that occurs from birth until teenage years caused by an abnormality of aqueous humor pathways. About 50-70% of Peters\' anomaly is accompanied by secondary childhood glaucoma. The presence of glaucoma will affect the prognosis. We reported the evaluation and treatment of secondary childhood glaucoma due to Peters\' anomaly. A 5 months-old boy was presented with the complaint of a enlarged left eye since 3 months old. The complaint was accompanied by a watering eye and frequently closed upon light exposure. The left eye looked opaquer than contralateral. Examination under anesthesia showed that the intraocular pressure (IOP) was 35 mmHg in the left eye and the corneal diameter was 14 mm. Other findings were keratopathy, diffuse corneal edema, buphthalmos, shallow anterior chamber, anterior synechiae, and linear slit shaped pupils in the nasal region. Patient was treated with ophthalmic timolol maleate which was later followed by trabeculectomy. After 1 week post-surgery, IOP assessment by palpation suggested the right eye within normal range while the IOP of left eye was higger than normal. Blepharospasm, epiphora, photophobia, bleb on superior, subconjunctiva bleeding, buphthalmos, keratopathy, minimal corneal edema, anterior chamber with shallow image, and posterior synechia were found in left eye anterior segment. In conclusion, trabeculotomy and trabeculectomy are recommended if there is no reduction of IOP observed after receiving timolol maleate therapy. The choice of surgical management is dependent on the feasibility of the protocol.
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  • 文章类型: Systematic Review
    6p25缺失综合征是一种罕见的遗传性疾病,其特征是广泛的先天性异常。眼科异常似乎与该综合征高度相关,尽管迄今为止这种关系还没有得到很好的描述。我们进行了系统的文献综述,以突出该缺失综合征患者的眼部特征,并描述了一名7个月大的女性,该女性具有6.07MB6p25.1p25.3缺失和4.25MB17q25.3重复。我们的病人出现了多种先天性异常,包括大头畸形,额前带,低耳朵,帐篷状的嘴巴,马鞍鼻子,平坦的中间面,和听力障碍。她的眼科特征包括眼球突出,向下倾斜的睑裂,超端粒,眼球震颤,双侧后胚胎毒素,和形状异常的瞳孔。对已发表的具有足够临床眼部描述的病例进行了系统回顾,其中包括63例确诊为6p25缺失的病例。观察到的最常见的眼部发现是后胚毒素,虹膜发育不全,阴形目,角膜混浊,和青光眼。
    The 6p25 deletion syndrome is a rare genetic disorder characterized by a wide spectrum of congenital anomalies. Ophthalmic abnormalities appear to be highly associated with the syndrome, although this relationship has not been well characterized to date. We conducted a systematic literature review to highlight the ocular features in patients with this deletion syndrome and describe a 7-month-old female who has a 6.07 MB 6p25.1p25.3 deletion and a 4.25 MB 17q25.3 duplication. Our patient presented with multiple congenital anomalies, including macrocephaly, frontal bossing, low set ears, tent-shaped mouth, saddle nose, flat midface, and hearing impairment. Her ophthalmic features included proptosis, down-slanting palpebral fissures, hypertelorism, nystagmus, bilateral posterior embryotoxon, and decentered and abnormally shaped pupils. A systematic review of the published cases with sufficient clinical eye descriptions included 63 cases with a confirmed 6p25 deletion. The most common eye findings observed were posterior embryotoxon, iris hypoplasia, corectopia, cornea opacity, and glaucoma.
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  • 文章类型: Case Reports
    这项研究包括死亡前的诊断功效,联合使用超声和磁共振成像(MRI)诊断眼前节发育不全。7天大的雄性荷斯坦小牛出生后不久出现进行性单侧眼球突出,并伴有右眼球增大。扩大的右眼球的超声检查显示(1)一个2厘米厚的回声实质病变填充右眼球的前部区域,(2)消声玻璃体的过度积累,和(3)不存在透镜结构。使用T2加权和流体衰减反转恢复MRI进行的尸检显示增厚,高强度前部病变和晶状体结构缺失。这些影像学发现提示前节发育不全。除了右眼球的异常结构和大小外,前颅影像学没有其他异常;因此,进行右眼摘除,允许完整的愈合而不化脓。由于前病变增厚和眼球内晶状体结构缺失的特征性超声表现,眼部超声检查提高了诊断准确性。提示前节发育不全。
    This study includes diagnostic efficacy of the antemortem, combined use of ultrasonography and magnetic resonance imaging (MRI) for the diagnosis of anterior segment dysgenesis. A 7-day-old male Holstein calf presented with progressive unilateral exophthalmos associated with enlargement of the right eyeball soon after birth. Ultrasonography of the enlarged right eyeball showed (1) a 2-cm-thick echogenic parenchymal lesion filling the anterior region of the right eyeball, (2) excess accumulation of the anechoic vitreous humor, and (3) absence of the lens structure. Antemortem examination using T2-weighted and fluid-attenuated inversion recovery MRI revealed a thickened, hyperintense anterior lesion and absence of the lens structure. These imaging findings were suggestive of anterior segment dysgenesis. Antemortem imaging showed no abnormalities other than the abnormal structure and size of the right eyeball; therefore, enucleation of the right eye was performed, which allowed intact healing without suppuration. Ocular ultrasonography enhanced the diagnostic accuracy due to the characteristic ultrasonographic findings of a thickened anterior lesion and absence of the lens structure in the eyeball, suggestive of anterior segment dysgenesis.
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  • 文章类型: Journal Article
    目的表征日本男性患者的临床和遗传特征,该患者患有由SLC38A8基因中的纯合单核苷酸重复引起的中央凹发育不全。
    我们进行了全面的眼科检查,包括全视野视网膜电图(FF-ERG)和模式反转视觉诱发电位(PR-VEP)。进行全外显子组测序(WES)以鉴定致病变体;Sanger测序用于确认。
    在WES分析中,在患者的SLC38A8中鉴定出纯合的单核苷酸重复(c.995dupG;p.Trp333MetfsTer35)。他未受影响的母亲杂合地携带了变体。患者表现出远视,先天性眼球震颤,低视力,和4级中央凹发育不全。裂隙灯检查显示轻度的后部胚胎毒素和性腺发育。眼底检查显示没有中央凹色素沉着过度和中央凹无血管,但没有视网膜变性病变.在FF-ERG中,杆ERG的振幅,标准闪光灯,和亮闪ERG在正常范围内;视锥介导的反应也显示出接近正常的振幅。PR-VEP的发现揭示了P100延迟和P100成分的振幅降低,但没有破烂的路线。
    本报告是关于日本人群SLC38A8相关中央凹发育不全的临床和遗传特征的第一份报告。这也是患有这种疾病的患者的正常杆和锥介导的反应的首次报道。
    To characterize the clinical and genetic features of a Japanese male patient with foveal hypoplasia caused by a homozygous single nucleotide duplication in the SLC38A8 gene.
    We performed a comprehensive ophthalmic examination including full-field electroretinography (FF-ERG) and pattern-reversal visual evoked potentials (PR-VEPs). Whole-exome sequencing (WES) was performed to identify the disease-causing variant; Sanger sequencing was used for confirmation.
    In the WES analysis, a homozygous single nucleotide duplication (c.995dupG; p.Trp333MetfsTer35) was identified in SLC38A8 of the patient. His unaffected mother carried the variant heterozygously. The patient exhibited hyperopia, congenital nystagmus, low visual acuity, and grade 4 foveal hypoplasia. Slit-lamp examination revealed mild posterior embryotoxon and goniodysgenesis. Fundus examination revealed the absence of foveal hyperpigmentation and foveal avascularity, but there were no retinal degenerative lesions. In the FF-ERG, the amplitudes of rod ERG, standard-flash, and bright-flash ERG were within the normal range; cone-mediated responses also showed nearly normal amplitudes. The PR-VEP findings revealed delayed P100 latencies and decreased amplitudes of the P100 components, but no chiasmal misrouting.
    This report is the first report on the clinical and genetic characteristics of SLC38A8-associated foveal hypoplasia in the Japanese population. This is also the first report of normal rod- and cone-mediated responses in a patient with this disorder.
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  • 文章类型: Case Reports
    背景:严重的先天性眼科畸形和青光眼可能是Coffin-Siris综合征(CSS)患者的重要偶发特征,特别是由SOX11突变引起的Coffin-Siris综合征9(CSS9,OMIM#615866)。最近,原发性(开角型)青光眼在两名儿童中被描述为最常见的Coffin-Siris综合征,CSS1(OMIM#135900)由ARID1B(含AT-富相互作用域的蛋白1B)基因突变。在这篇文章中,我们介绍了青光眼合并Coffin-Siris综合征9的第一份报告,以及继发性青光眼合并任何形式的Coffin-Siris综合征的第一份报告.这些发现表明,在Coffin-Siris综合征患者中,继发性青光眼是偶发的。
    方法:在美因茨的儿童青光眼中心对患有继发性儿童青光眼和其他眼部表现的儿童进行了评估和治疗。德国。全身麻醉下的检查显示眼眼前节发育不全(ASD)(Peters型虹膜角膜发育不全)合并先天性角膜缘干细胞缺乏症(LSCD),无虹膜,和白内障。患者还患有多种其他先天性异常和严重的发育迟缓。为了解释他的异常组合,我们在2018年末和2019年初进行了外周血分子遗传学分析.根据与先天性青光眼相关的18个基因的小组诊断结果,进行了全外显子组测序,发现了一个新的可能的致病性杂合变体c.251G>T,p.(Gly84Val)在SOX11基因(SRY相关的HMG-box基因11)中。该变体从头发生。因此,患者的多种先天性异常和发育迟缓代表Coffin-Siris综合征9(CSS9,OMIM#615866).
    结论:当眼部疾病与其他系统特征同时发生时,遗传分析可能是开创性的。结果表明,青光眼是Coffin-Siris综合征患者的偶发特征。早期治疗可以改善青光眼患者的视力,我们建议Coffin-Siris综合征患者应接受特定的眼科筛查.
    BACKGROUND: Severe congenital ophthalmological malformations and glaucoma might be an important occasional feature in patients with Coffin-Siris syndrome (CSS), especially Coffin-Siris syndrome 9 (CSS9, OMIM #615866) caused by SOX11 mutation. Recently, primary (open-angle) glaucoma was described in two children with the most common form of Coffin-Siris syndrome, CSS1 (OMIM #135900) by ARID1B (AT-rich interaction domain-containing protein 1B) gene mutation. In this article, we present the first report of glaucoma with Coffin-Siris syndrome 9 as well as the first report of secondary glaucoma with any form of Coffin-Siris syndrome. These findings indicate that secondary glaucoma is an occasional finding in patients with Coffin-Siris syndrome.
    METHODS: A child with secondary childhood glaucoma and additional ocular manifestations was evaluated and treated at the childhood glaucoma centre in Mainz, Germany. Examination under general anaesthesia revealed ocular anterior segment dysgenesis (ASD) (Peters type iridocorneal dysgenesis) in combination with congenital limbal stem cell deficiency (LSCD), aniridia, and cataract. The patient also had multiple other congenital anomalies and severe developmental delay. To explain his combination of anomalies, molecular genetic analysis from peripheral blood was performed in late 2018 and early 2019. Following normal findings with a panel diagnostic of 18 genes associated with congenital glaucoma, whole exome sequencing was performed and revealed a novel likely pathogenic heterozygous variant c.251G>T, p.(Gly84Val) in the SOX11 gene (SRY-related HMG-box gene 11). The variant had occurred de novo. Thus, the multiple congenital anomalies and developmental delay of the patient represented Coffin-Siris syndrome 9 (CSS9, OMIM #615866).
    CONCLUSIONS: When eye diseases occur in combination with other systemic features, genetic analysis can be seminal. Results indicate that glaucoma is an occasional feature of patients with Coffin-Siris syndrome. As early treatment may improve the visual outcome of patients with glaucoma, we suggest that patients with Coffin-Siris syndrome should receive specific ophthalmological screening.
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  • 文章类型: Case Reports
    BACKGROUND: Peters plus syndrome (PPS) is a combination of congenital Peters anomaly and systemic abnormalities. It is inherited most commonly in an autosomal recessive pattern with homozygous B3GLCT mutations. Ocular findings consist predominantly anterior segment abnormalities without posterior segment involvement.
    METHODS: In this presentation, we report a case of PPS with homozygous pathogenic variant in B3GLCT who presented with classic anterior segment findings, systemic abnormalities, as well as atypical bilateral chorioretinal atrophy. The chorioretinal findings were characterized with spectral-domain optical coherence tomography.
    CONCLUSIONS: Our report expands the phenotypic descriptions of PPS by characterizing posterior segment findings.
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  • 文章类型: Case Reports
    暂无摘要。
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  • 文章类型: Case Reports
    To report the findings in a patient with congenital primary aphakia, a rare disease known to be caused by mutations in the FOXE3 gene.
    The clinical appearances and visual functions of the patient were determined from the medical records. Genetic analyses were performed to search for mutations in the FOXE3 gene by Sanger sequencing and whole exome sequencing.
    The 2-month-old male patient first presented with bilateral congenital aphakia associated with microphthalmia, corneal opacity, and dysplasia of the anterior segment. At the age of 2-years, his visual acuity in the left eye was 20/1000 at 30 cm, he was able to discriminate red, blue, and yellow light stimuli, and a b-wave was recorded by scotopic combined rod-cone electroretinograms. The right eye became blind during the follow-up period. No mutation in the FOXE3 gene was detected.
    Although congenital aphakia is known to be caused by mutations in the FOXE3 gene, the results of lack of coding mutation in this patient suggests a possible genetic heterogeneity of the disease.
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  • 文章类型: Case Reports
    Trisomy 18 (or Edwards syndrome) has an incidence of 1 in 6,000 to 8,000 live births, making it the second most common trisomy after trisomy 21. Ophthalmologic anomalies include epicanthal folds, hypertelorism, and hypoplastic supraorbital ridges, whereas corneal opacities, microcornea, congenital glaucoma, cataract, retinal depigmentation, retinal vascular tortuosity, colobomatous microphthalmia, and cyclopia are thought to be less common; iridolenticular adhesions have not been previously reported. Our patient was a female with confirmed trisomy 18 with ophthalmologic examination revealing corneal opacities and iridolenticular adhesions. Insofar as corneal opacities are a known entity in trisomy 18 and have been considered by some to be of clinical importance, iridolenticular adhesions may also be a noteworthy manifestation of the disease\'s anterior segment dysgenesis.
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