Plateau iris

Diniz-Filho, Alberto; Cronemberger, Sebastião; Mérula, Rafael Vidal; Calixto, Nassim

doi:10.1590/s0004-27492008000500029

Cited by 9 publications

(9 citation statements)

References 21 publications

(34 reference statements)

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“…The exclusion criteria were: (1) secondary angle closure, such as iris neovascularization, lens intumescence, or subluxation and uveitis; (2) plateau iris configuration, which is defined as an immediate anterior bend of the iris in the far periphery of the iris and a flat, unbowed iris extending towards the pupil from that sharp peripheral bend by gonioscopy [ 17 ]; (Plateau iris configuration was excluded because of its unique biometric structures different from other primary angle closures.) (3) previous laser or intraocular surgery; (4) patients with axial length < 19mm; (5) other eye disorders which could potentially affect biometric parameters such as macular degeneration and retinal detachment.…”

Section: Methodsmentioning

confidence: 99%

Differences between fellow eyes of acute and chronic primary angle closure (glaucoma): An ultrasound biomicroscopy quantitative study

Chen

et al. 2018

PLoS ONE

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PurposeTo compare various biometric parameters between fellow eyes of acute primary angle closure (glaucoma) [APAC(G)] and fellow eyes of chronic primary angle closure (glaucoma) [CPAC(G)].MethodsUltrasound biomicroscopy examinations were performed on 47 patients with unilateral APAC(G) and 41 patients with asymmetric CPAC(G) before laser peripheral iridotomy and pilocarpine treatment. Anterior chamber depth and width (ACD and ACW), lens vault (LV), iris curvature (IC), iris root distance (IRD), trabecular-ciliary process distance (TCPD), iris-ciliary process distance (ICPD), trabecular-ciliary angle (TCA), and other biometric parameters were compared between fellow eyes of APAC(G) and fellow eyes of CAPC(G).ResultsCompared with fellow eyes of CPAC(G), fellow eyes of APAC(G) had smaller ACD (P < 0.001), ACW (P = 0.007), TCPD (P = 0.016), ICPD (P = 0.008), and TCA (P = 0.006), as well as larger LV (P = 0.002), IC (P = 0.012), and IRD (P = 0.003). On multivariate logistic regression analyses, a 0.1 mm decrease in ACD (odds ratio [OR]: 0.705, 95%CI: 0.564–0.880, P = 0.002), ICPD (OR: 0.557, 95%CI: 0.335–0.925, P = 0.024), and a 0.1 mm increase in IRD (OR: 2.707, 95%CI: 1.025–7.149, P = 0.045), was significantly associated with occurrence of acute angle closures.ConclusionsFellow eyes of APAC(G) had smaller anterior segment dimensions, higher LV, more posterior iris insertion, greater IC, and more anteriorly rotated ciliary body compared with fellow eyes of CPAC(G). ACD, ICPD, and IRD were the three most important parameters that distinguish eyes predisposed to APAC(G) or CPAC(G).

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Section: Methodsmentioning

confidence: 99%

Differences between fellow eyes of acute and chronic primary angle closure (glaucoma): An ultrasound biomicroscopy quantitative study

Chen

et al. 2018

PLoS ONE

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“…Even if the slit lamp examination is normal at first glance, gonioscopy reveals a narrow angle and a double hump configuration of the iris [ 37 , 38 ]. Following diagnosis, treatment response is often poor: patients are usually non-responsive to laser peripheral iridotomy, even if the procedure is properly performed and the iridotomy is patent [ 37 , 39 ].…”

Section: Ubm and Plateau Iris Configurationmentioning

confidence: 99%

Ultrasound biomicroscopy in glaucoma assessment

Potop¹,

Coviltir²,

Schmitzer³

et al. 2021

rjo

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“…Pupillary block is involved in the vast majority of cases of angle closure. In plateau iris configuration, the ciliary body is anteriorly positioned resulting in the anterior displacement of the peripheral iris into the angle [26]. Plateau iris syndrome is characterized by either persistent angle closure or angle closure and elevated IOP in the presence of a patent iridotomy, thus excluding a primary pupil block mechanism.…”

Section: Classification and Subtypesmentioning

confidence: 99%

Medical Management of Glaucoma in the 21st Century from a Canadian Perspective

Harasymowycz

Birt

Gooi

et al. 2016

Journal of Ophthalmology

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Glaucoma is a medical term describing a group of progressive optic neuropathies characterized by degeneration of retinal ganglion cells and retinal nerve fibre layer and resulting in changes in the optic nerve head. Glaucoma is a leading cause of irreversible vision loss worldwide. With the aging population it is expected that the prevalence of glaucoma will continue to increase. Despite recent advances in imaging and visual field testing techniques that allow establishment of earlier diagnosis and treatment initiation, significant numbers of glaucoma patients are undiagnosed and present late in the course of their disease. This can lead to irreversible vision loss, reduced quality of life, and a higher socioeconomic burden. Selection of therapeutic approaches for glaucoma should be based on careful ocular examination, patient medical history, presence of comorbidities, and awareness of concomitant systemic therapies. Therapy should also be individualized to patients' needs and preferences. Recent developments in this therapeutic field require revisiting treatment algorithms and integration of traditional and novel approaches in order to ensure optimal visual outcomes. This article provides an overview of recent developments and practice trends in the medical management of glaucoma in Canada. A discussion of the surgical management is beyond the scope of this paper.

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Plateau iris

Cited by 9 publications

References 21 publications

Differences between fellow eyes of acute and chronic primary angle closure (glaucoma): An ultrasound biomicroscopy quantitative study

Differences between fellow eyes of acute and chronic primary angle closure (glaucoma): An ultrasound biomicroscopy quantitative study

Ultrasound biomicroscopy in glaucoma assessment

Medical Management of Glaucoma in the 21st Century from a Canadian Perspective

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