lens coloboma

  • 文章类型: Case Reports
    为了描述FLACS(飞秒激光辅助白内障手术)和瞳孔成形术技术在与虹膜晶状体小带瘤相关的白内障手术中的应用,以及报告FLACS在这种复杂手术中可以提供的优势。
    FLACS期间(Victus®-TECHNOLAS,BauschandLombIncorporated,美国),对接程序后,囊切开术的参数,手动调整碎片和切口。虹膜牵开器固定在晶状体前囊的边缘,以在超声乳化手术期间为囊袋提供稳定性。植入囊袋张力环和人工晶状体(IOL)。使用改进的滑结技术进行虹膜修复。为此,使用直针上的10.0Prolene,并在眼外打结,在结膜上。最后,作为预防措施,我们进行了前路玻璃体切除术.
    尽管与传统手术相比,FLACS技术存在争议,它似乎在复杂的病例中有益,如与虹膜和晶状体缺损相关的白内障,因为它允许修改不同的参数,以促进和确保手术安全。另一方面,所描述的虹膜修复技术有助于操作虹膜缝线。此外,诸如使用囊膜张力环和瞳孔成形术等补充技术有助于使IOL居中并稳定。为了减轻虹膜缺损引起的症状,获得更好的视觉质量。
    UNASSIGNED: To describe the use of FLACS (Femtosecond-Laser-Assisted Cataract Surgery) and pupiloplasty technique employed in a cataract surgery associated with iris-lens-zonule coloboma, as well as to report the advantages that FLACS can provide in this type of complicated surgery.
    UNASSIGNED: During FLACS (Victus® - TECHNOLAS, Bausch and Lomb Incorporated, USA), after the docking procedure, the parameters of capsulotomy, fragmentation and incisions were manually adjusted. Iris retractors were anchored to the edge of the anterior lens capsule to provide stability to the bag during phacoemulsification maneuvers, and a capsular tension ring and intraocular lens (IOL) were implanted. Iris repair was approached using a modification of the slip-knot technique. For this purpose, a 10.0 Prolene on a straight needle was used and knotted extraocularly, over the conjunctiva. Finally, an anterior vitrectomy was performed as a precaution.
    UNASSIGNED: In spite of the existing controversy regarding FLACS technology compared to conventional surgery, it seems to be beneficial in complicated cases such as cataracts associated with iris and lens coloboma, since it allows the modification of different parameters that facilitate and ensure surgery safety. On the other hand, the iris repair technique described facilitates manipulation of the iris sutures. In addition, complementary techniques such as the use of a capsular tension ring and pupiloplasty help to center and stabilize the IOL, and to reduce the symptoms derived from iris coloboma, obtaining a better visual quality.
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  • 文章类型: Journal Article
    马凡氏综合征(MFS)是一种常染色体显性遗传性结缔组织疾病,具有原纤维蛋白1基因缺陷。最常见的眼部表现是超颞叶方向的晶状体半脱位,占总病例的50%-85%。文献中已经描述了晶状体缺损与MFS的关联,但是晶状体缺损与扁桃体异位并存是一个罕见的特征。这里,我们描述了3例MFS,包括1例双侧晶状体缺损伴外翻:病例1-39岁男性,右眼下颞叶晶状体半脱位,左眼超颞叶晶状体半脱位伴开角型青光眼和高度近视,病例2-15岁儿童双侧鼻上晶状体半脱位伴晶状体缺损,病例3-一名56岁女性,双侧晶状体缺损。案例1和案例2具有清晰的镜片,具有良好的屈光矫正;因此,他们用隐形眼镜进行了光学修复,而病例3被建议进行白内障手术。区分晶状体缺损和更常见的实体是很重要的,扁桃体作为前者通常保持稳定,而后者可能需要手术干预。
    Marfan\'s syndrome (MFS) is an autosomal dominant connective tissue disorder with defect in the fibrillin-1 gene. The most common ocular manifestation is subluxated lens in the superotemporal direction, accounting for 50%-85% of total cases. The association of lens coloboma with MFS has been described in literature, but the coexistence of lens coloboma with ectopia lentis is a rare feature. Here, we describe three cases of MFS including a case of bilateral lens coloboma with ectopia lentis: case 1 - a 39-year-old male with inferotemporal lens subluxation in the right eye and superotemporal lens subluxation in the left eye with open-angle glaucoma and high myopia, case 2 - a 15-year-old child with bilateral superonasal lens subluxation with lens coloboma, and case 3 - a 56-year-old female with bilateral lens coloboma. Case 1 and case 2 had clear lenses with good refractive correction; hence, they were optically rehabilitated with contact lenses, whereas case 3 was advised for cataract surgery. It is important to distinguish the lens coloboma from a more common entity, ectopia lentis as former usually remains stable while the latter might need a surgical intervention.
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  • 文章类型: Case Reports
    一个十岁的男孩被转诊,抱怨视力模糊和眼睛偏离。在检查中,右眼斜视,左眼的最佳矫正视力为6/60Snellen敏锐度和6/6Snellen敏锐度。右眼裂隙灯生物显微镜显示9点位置有白内障。双眼前段和后段的其余部分均正常。因此,诊断为单侧晶状体缺损伴弱视。
    A ten-year-old male child was referred with complaints of blurring of vision and deviation of the eye. On examination, the right eye has an esodeviation squint with a best corrected visual acuity of 6/60 Snellen\'s acuity and 6/6 Snellen\'s acuity in the left eye. Slit-lamp biomicroscope of the right eye showed coloboma at the 9 o\'clock position with cataract. The rest of the anterior and posterior segments was normal in both eyes. Thus, a diagnosis of unilateral lens coloboma with amblyopia was made.
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  • 文章类型: Case Reports
    先天性风疹综合征(CRS)通常会影响所有眼部结构,无论是孤立还是组合。CRS中典型的眼部并发症包括白内障,微角膜,小眼症,青光眼,眼球震颤,和视网膜病变。我们报告了一个4岁女孩的病例,她表现为双侧完全白内障并伴有感觉性眼球震颤,瞳孔扩张不良,虹膜发育不全,右眼高度轴性近视(RE),左眼视网膜脱离(LE)。系统评估显示小头症伴有相关的动脉导管未闭(PDA)和轻度肺动脉高压(PAH)。基于这些发现,患儿被诊断为临床确诊的CRS.这个孩子接受了右眼白内障手术。术中,注意到涉及晶状体颞赤道的晶状体缺损以及高度镶嵌的眼底。白内障手术后两周,儿童的最佳矫正视力(BCVA)为6/24。然而,手术四周后,这个孩子的右眼出现了完全的孔源性视网膜脱离,为此,进行了带内激光和硅油填塞的平坦部玻璃体切除术。四周后,孩子右眼的BCVA为6/36,一直维持到最后一次随访4个月.晶状体缺损可能是孤立的,也可能与脉络膜视网膜缺损有关。我们是先天性风疹综合征患者中第一例与高度近视和双侧白内障相关的单侧非典型晶状体缺损。先前尚未报道高度近视的晶状体瘤与CRS的眼关联。我们的案例突出表明,在患有单侧或双侧先天性白内障的CRS儿童中,在对这些病例进行白内障手术时,应牢记双豆状结瘤作为共存关联的可能性。
    Congenital rubella syndrome (CRS) may affect all ocular structures in general, either in isolation or in combination. Typical ocular complications in CRS include cataracts, microcornea, microphthalmia, glaucoma, nystagmus, and retinopathy. We report a case of a four-year-old girl who presented with bilateral total cataracts with sensory nystagmus, a poorly dilating pupil, iris hypoplasia, high axial myopia in the right eye (RE), and a retinal detachment in the left eye (LE). The systemic evaluation revealed microcephaly with an associated patent ductus arteriosus (PDA) and mild pulmonary arterial hypertension (PAH). Based on these findings, the child was diagnosed with clinically confirmed CRS. The child was taken up for right-eye cataract surgery. Intra-operatively, a lens coloboma involving the temporal equator of the lens along with a highly tessellated fundus was noted. Two weeks post-cataract surgery, the child had a best corrected visual acuity (BCVA) of 6/24. However, four weeks after the surgery, the child developed total rhegmatogenous retinal detachment in the right eye, for which pars plana vitrectomy with endolaser and silicon oil tamponade was done. Four weeks later, the child\'s BCVA in the right eye was 6/36, which was maintained until the last follow-up of four months. Lens coloboma may be isolated or may occur in association with chorioretinal coloboma. Ours is the first case of unilateral atypical lens coloboma associated with high myopia and bilateral cataracts in a patient with congenital rubella syndrome. Lens colobomas with high myopia have not been reported previously as ocular associations of CRS. Our case highlights that in children with CRS presenting with unilateral or bilateral congenital cataracts, the possibility of lenticular coloboma as a coexistent association should be kept in mind while taking these cases for cataract surgery.
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  • 文章类型: Case Reports
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  • 文章类型: Case Reports
    Lens colobomas extending more than 4 clock hours and causing visual impairment require lens extraction along with capsular support devices with scleral fixation for adequate centration of the capsular bag and for prevention of capsular fornix aspiration with inadvertent extension of zonular dialysis intraoperatively. In this case series, we describe a technique for the management of isolated lens colobomas involving 4-5 clock hours by clear lens extraction and intraocular lens implantation using a combination of a capsular tension ring with a capsular tension segment (CTS) for the centration and stability of the capsular bag. Hoffman\'s corneoscleral pocket and half-bow sliding knot technique were used for scleral fixation of the CTS.
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  • 文章类型: Case Reports
    BACKGROUND: Marfan syndrome (MS), a connective tissue disorder that affects ocular, skeletal, and cardiovascular systems, is caused by heterozygous pathogenic variants in FBN1. To date, over 1800 different pathogenic variants have been reported.
    METHODS: In the present study, FBN1 sequence analysis was performed in a family and two unrelated patients with MS.
    RESULTS: Three novel pathogenic variants were detected. Two of these variants [c.6610T>C; p.(Cys2204Arg) and c.1956T>G; p.(Cys652Trp)], which affect a cysteine residue, were associated with MS with ectopia lentis, whereas the mutation causing a premature stop codon [c.2506delA; p.(Ser836ValfsX10)] leads to a classical MS of a milder phenotype.
    CONCLUSIONS: We anticipate that the three novel pathogenic variants identified in this study will provide further support for the clinical relevance of variants in the large FBN1 gene.
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  • 文章类型: Case Reports
    A rare case of bilateral ectopia lentis with isolated lens coloboma in Marfan syndrome is reported. A 21-year-old female presented with decreased vision in both eyes. Her unaided visual acuity was 20/200 and 20/400 in the right and left eye, respectively, improving to 20/40 with -4.5 DS/-3.0 DC x 10° correction in the right eye and 20/80 with -10.0 DS/-6.5 Dc x10° correction in the left eye. On slit lamp examination under mydriasis, both eyes revealed ectopia lentis with lens coloboma and stretched zonules. Fundus examination revealed pigmentary changes at the fovea. On systemic evaluation, she was diagnosed with Marfan syndrome. She was prescribed a refractive correction in form of a contact lens and kept under observation.
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  • 文章类型: Case Reports
    OBJECTIVE: The aim of this study is to describe the management of cataract and refractory glaucoma in a case of congenital aniridia (AN)-1.
    METHODS: In an 18-year-old female patient affected by congenital AN, bilateral coloboma of the zonula and lens, cataract and glaucoma, pars plana vitrectomy, cataract extraction and subsequent transcorneal ciliary body argon laser photocoagulation were performed.
    RESULTS: Five years after laser treatment, the best-corrected visual acuity was 20/50 and the intraocular pressure was stable at 18 mm Hg with topical pharmacological management consisting of timolol 0.5% and latanoprost 0.005%.
    CONCLUSIONS: From our experience, transcorneal ciliary body photocoagulation after cataract extraction and vitrectomy could be a useful technique to manage high ocular pressure in eyes affected by congenital AN.
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  • 文章类型: Case Reports
    A lens coloboma is not a true coloboma; it is just a zonular absence that causes a defect in the lens equator and hence a more spherical lens. It can be isolated or in association with iris, choroid or retinal colobomas. Typically the defect is present at the site of the embryonic fissure, but it can be present elsewhere. This congenital defect can cause amblyopia, especially when it is associated with cataract. We describe a case of a 39-year-old male with an atypical coloboma that was managed successfully with phacoemulsification, capsular tension ring and intraocular lens implantation. Scheimpflug image analysis and full ophthalmological assessment were performed. Scheimpflug images demonstrated a notching of the lens equator and an absence of zonulae. During the surgical procedure an ophthalmic viscosurgical device was used to tamponade the vitreous, and after continuous curvilinear capsulorhexis the capsular tension ring was inserted to allow the surgeon to perform a safe phacoemulsification.
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