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Iris
The most anterior portion of the uveal layer, separating the anterior chamber from the posterior. It consists of two layers - the stroma and the pigmented epithelium. Color of the iris depends on the amount of melanin in the stroma on reflection from the pigmented epithelium.
Relation(s)
- voir aussi au terme générique : [Descripteurs (mots clés)] Pôle antérieur du bulbe oculaire
- voir aussi au terme générique : [Descripteurs (mots clés)] Uvée
- voir aussi au terme spécifique : [Descripteurs (mots clés)] Pupille
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Case Report : Sequelae of Bilateral Iris Pigment Epithelial Cysts Masquerading as Primary Pigmentary Glaucoma / Sandra Nelle Harpster in OVS : Optometry & Vision Science, vol. 96, 01 (Janvier 2019)
[article]
in OVS : Optometry & Vision Science > vol. 96, 01 (Janvier 2019)
Titre : Case Report : Sequelae of Bilateral Iris Pigment Epithelial Cysts Masquerading as Primary Pigmentary Glaucoma Type de document : article de périodique Auteurs : Sandra Nelle Harpster ; Juliane Grace Flettner ; Andrew Mick Année de publication : 2019 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Glaucome
[Thésaurus Mesh]Iris
[Thésaurus Mesh]Présentations de cas
[Thésaurus HELB]:Optique:kystes épithéliaux
[Thésaurus HELB]:Paramédical:syndrome de dispersion pigmentaireMots-clés : glaucome pigmentaire primaire glaucome pigmentaire secondaire avancé Résumé : SIGNIFICANCE Patients with pigment dispersion syndrome are frequently encountered in clinical practice. Iris abnormalities and the absence of key features of pigment dispersion syndrome can guide the discovery of secondary causes of pigmentary glaucoma, such as peripheral iris pigment epithelial cysts.
PURPOSE The purpose of this study was to describe a patient initially diagnosed as having primary pigmentary glaucoma found to have multiple bilateral peripheral iris pigment epithelial cysts causing pigment liberation, focal angle closure, and advanced secondary glaucoma.
CASE REPORT A 64-year-old man presented for follow-up after a recent diagnosis of primary pigmentary glaucoma in the left eye. Clinical examination revealed transillumination defects of both irides and a heavily pigmented trabecular meshwork. A midperipheral bulge of the iris was appreciated in the superior temporal quadrant of the left eye. Gonioscopic evaluation showed that the bulge focally obstructed the angle. Anterior segment optical coherence tomography demonstrated a normal iris insertion of both eyes, with the exception of a steepened approach superotemporally in the left eye. Ultrasound biomicroscopy revealed bilateral small- to medium-sized peripheral iris pigment epithelial cysts and confirmed a large cyst superotemporally in the left iris.
CONCLUSIONS This case describes a patient with advanced secondary pigmentary glaucoma from iris pigment epithelial cysts. The mechanisms of glaucoma are likely twofold: (1) pigment liberation from the cysts contacting the lens zonules and, to a lesser extent, (2) focal angle closure at the site of the large peripheral cyst. The key features of pigmentary glaucoma, namely, posterior bowing of the iris, may not be present in secondary pigment dispersion. This case highlights the importance of careful evaluation of the iris and angle in making a correct diagnosis. The choice of topical agent to control intraocular pressure while not increasing the size of these cysts is also an important consideration.Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Case Report: Significant Complications of Cosmetic Iris Implantation / Jeremy B. Hatcher in OVS : Optometry & Vision Science, vol. 98, 08 (Aout 2021)
[article]
in OVS : Optometry & Vision Science > vol. 98, 08 (Aout 2021)
Titre : Case Report: Significant Complications of Cosmetic Iris Implantation Type de document : article de périodique Auteurs : Jeremy B. Hatcher ; Alexander De Castro-Abeger ; Joshua L. Robinson ; Christine Shieh Année de publication : 2021 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]:P:Prothèses et implants:Prothèses et implants / effets indésirables
[Thésaurus Mesh]Cécité
[Thésaurus Mesh]Cosmétiques
[Thésaurus Mesh]Iris
[Thésaurus Mesh]Prothèses et implants
[Thésaurus HELB]:Optique:iris artificielRésumé : SIGNIFICANCE: The complications of cosmetic iris implantation may result in irreversible vision loss. Patients who obtain these implants against general medical consensus may present to providers when sequelae develop. In symptomatic patients, providers must recognize the imminent risk to vision and mitigate further ocular damage. PURPOSE: This is an observational clinical case report of a patient with significant, progressive, vision-threatening ocular pathology from prior cosmetic iris implantation, despite medical and surgical efforts to preserve vision. CASE REPORT: A 35-year-old HIV-positive man with a history of cosmetic iris implants in India 16 months prior was referred to our center. He had a history of 4 months of steroid-refractory uveitis and secondary glaucoma, with IOP measurements of more than 50 mmHg in the outpatient setting. Slit-lamp examination revealed ciliary flush, pannus formation, corneal edema, and keratic precipitates. Optical coherence tomography suggested possible retinal nerve fiber layer loss in the left eye. He was diagnosed with uveitis and glaucoma, and after a short course of IOP-lowering medication, the implants were removed sequentially. Post-operatively, his course was complicated by IOP elevation, cataract development, and corneal decompensation. This led to bilateral Ahmed tube placement, Descemet's stripping endothelial keratoplasty of the right eye, and pending cataract surgery because of now-dense bilateral cataracts. CONCLUSIONS: This case emphasizes the vision-threatening dangers of cosmetic iris implantation. It also demonstrates that sequelae may persist and develop despite implant removal and anticipatory management. Providers managing similar patients should carefully monitor for disease progression and maintain a low threshold for referral and/or decisive surgical intervention. Note de contenu :
Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Diagnostic and treatment of diseases affecting the anterior chamber (lens, iris, ciliary body and pupil) / Louise O’Toole in OPTOMETRY TODAY, vol.47, 19 (Octobre 2007)
[article]
in OPTOMETRY TODAY > vol.47, 19 (Octobre 2007)
Titre : Diagnostic and treatment of diseases affecting the anterior chamber (lens, iris, ciliary body and pupil) Type de document : article de périodique Auteurs : Louise O’Toole, Auteur Descripteurs (mots clés) : [Thésaurus Mesh]Chambre antérieure du bulbe oculaire
[Thésaurus Mesh]Corps ciliaire
[Thésaurus Mesh]Infections de l'oeil
[Thésaurus Mesh]Iris
[Thésaurus Mesh]PupillePermalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité Périodique Erasme - périodiques Périodiques Disponible Irisprint contact lenses : an overview from the eye clinic basel / Ralf Beuschel in Global contact, 79 (Mai-Aout 2018)
[article]
in Global contact > 79 (Mai-Aout 2018) . - p.36-39
Titre : Irisprint contact lenses : an overview from the eye clinic basel Type de document : article de périodique Auteurs : Ralf Beuschel ; Margarita Todorova Année de publication : 2018 Article en page(s) : p.36-39 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Iris
[Thésaurus Mesh]Lentilles de contactMots-clés : contact lenses Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité G Périodique Erasme - périodiques Périodiques Disponible G Périodique Erasme - périodiques Périodiques Disponible