Ocular Biometric Parameters Associated With Intraocular Pressure Reduction After Cataract Surgery in Normal Eyes

Yang, Hyun; Lee, Junsung; Choi, Sang Kyung

doi:10.1016/j.ajo.2013.02.003

Cited by 90 publications

(79 citation statements)

References 21 publications

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“…Trabecular endothelial remodeling in response to ultrasonic stress, 27 prostaglandin release, 28 and increase in aqueous outflow by expansion of the trabecular meshwork 4 are some of the hypothetical mechanisms, but angle and ACD change induced by cataract removal has been shown to be the main mechanism of IOP change in OAs as well as NAs. 14 Huang et al 9 supported this hypothesis by showing that IOP reduction was associated with angle widening in both OA and NA eyes. It can be hypothesized that the main part of the IOP-lowering effect of cataract removal in normal eyes is implemented through the effect of the lens on angle anatomy in both OAs and NAs.…”

Section: Discussionsupporting

confidence: 50%

“…Similarly, these studies did not show any correlations between IOP reduction and AL in multivariate analysis. 9,14 The reason may be that AL is a surrogate for the narrowness of the angle.…”

Section: Discussionmentioning

confidence: 99%

“…9 However, few studies have examined the relationship between reduction in IOP and lens parameters. 14 The crystalline lens has a pivotal role in narrowing the angle by pushing the peripheral iris anteriorly. Although many of the anatomical factors such as axial length (AL) and anterior chamber width cannot be changed, the lens remains one of the few modifiable factors that can secondarily influence the anterior chamber and angle parameters and thus the IOP.…”

Section: Introductionmentioning

confidence: 99%

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Lens parameters as predictors of intraocular pressure changes after phacoemulsification

Moghimi

Abdi

Latifi

et al. 2015

Eye

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Purpose To evaluate intraocular pressure (IOP) change after cataract surgery in nonglaucomatous eyes with narrow and open angles (OAs) and its relation to novel lens parameters measured by anterior segment optical coherence tomography (AS-OCT). Setting University affiliated hospital, Farabi Eye Hospital, Tehran, Iran. Design Prospective interventional case series. Methods In this prospective study, 85 nonglaucomatous eyes underwent phacoemulsification and lens implantation. Thirty-nine eyes had OAs and 46 eyes had narrow angles (NAs). IOP and biometric parameters were measured by AS-OCT preoperatively and 3 months after surgery. Change in IOP and its relation to biometric parameters, including lens vault (LV), anterior vault (AV), defined as the sum of the LV and the ACD, and relative LV (rLV), defined as the ratio of the LV to the AV, were evaluated. The main outcome measure was degree of IOP change after phacoemulsification. Results Of the 85 patients included in the analysis, 35 were male and 50 were female with an overall mean age of 62.2 ± 8.9 years. The average IOP reduction was − 4.95 ± 2.26 mm Hg, from a preoperative mean of 17.12 ± 2.47 mm Hg, at 3 months after cataract surgery. The amount of IOP reduction was significantly greater in the NA compared with the OA group. In multivariate linear regression analysis, preoperative IOP and AV were significantly associated with IOP decrease (all ≤ 0.03). Conclusion Cataract surgery results in IOP reduction in both OA and NA eyes. The amount of IOP reduction is related to AV.

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Section: Discussionsupporting

confidence: 50%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lens parameters as predictors of intraocular pressure changes after phacoemulsification

Moghimi

Abdi

Latifi

et al. 2015

Eye

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“…For instance, an increase in anterior chamber depth (ACD), angle opening distance and anterior chamber area are to be expected [19,20,21]. These anatomical factors are particularly relevant in ACG, typically characterized by a narrow angle and a shallow anterior chamber that progressively decrease as the lens becomes thicker and more anteriorly positioned.…”

Section: Ocular Biometric Parametersmentioning

confidence: 99%

Cataract Surgery and Intraocular Pressure

Melância

Pinto²,

Marques-Neves

2015

Ophthalmic Res

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Cataract surgery is one of the most performed surgeries in the developed world. In addition to its significant impact on visual acuity, phacoemulsification has been hailed as a potential intraocular pressure (IOP)-lowering procedure. While current evidence suggests an overall significant and sustained decrease in IOP to exist after cataract surgery, the specific ocular characteristics that could help predict which patients are likely to benefit from this IOP-lowering effect remain unclear. This definition is important in glaucoma patients if this surgery is to be used in the treatment for this disease. Our review aims to summarize the literature on the subject, depicting possible mechanisms behind this IOP decrease, which type of patients are more likely to benefit from this surgery for IOP-lowering purposes and ultimately help optimizing disease management for the increasing number of patients with concomitant glaucoma and cataract.

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“…Nach der Entfernung der Linse treten selbst in Augen ohne Glaukom anatomische Veränderungen in der Vorderkammer ein, und viele biometrische Faktoren verändern sich. Zum Beispiel sind eine Zunahme der Vorderkammertiefe (VKT), -winkelöffnungs-strecke und -fläche zu erwarten [19][20][21]. Diese anatomischen Faktoren sind besonders relevant beim EWG, typischerweise durch einen verengten Winkel und eine flache Vorderkammer gekennzeichnet; sie sind umso geringer ausgeprägt, je dicker die Linse wird und je weiter nach anterior sie positioniert ist.…”

Section: Vorhersage Des Postoperativen Iodunclassified

Kataraktchirurgie und Augeninnendruck

Melância

Pinto²,

Marques-Neves

2017

Kompass Ophthalmol

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Die Kataraktoperation ist eine der am häufigsten durchgeführten Operationen in den Industrieländern. Neben ihrer signifikanten Auswirkung auf die Sehschärfe wird der Phakoemulsifikation auch eine potenzielle Intraokulardruck(IOD)-senkende Wirkung zugeschrieben. Während die aktuelle Evidenzlage auf eine insgesamt signifikante und anhaltende IOD-Senkung nach Kataraktoperationen hindeutet, ist noch unklar, welche spezifischen okulären Merkmale dazu beitragen könnten vorherzusagen, welche Patienten wahrscheinlich von diesem IOD-senkenden Effekt profitieren würden. Dies bei Glaukompatienten klar zu benennen ist jedoch wichtig, wenn die Kataraktoperation einen Platz in der Behandlung des Glaukoms erhalten soll. Die vorliegende Arbeit gibt einen Überblick über die Literatur zu diesem Thema und geht darauf ein, welche Mechanismen der IOD-Senkung zugrunde liegen und welche Patientengruppen mit höherer Wahrscheinlichkeit im Hinblick auf die IOD-Senkung von diesem Eingriff profitieren könnten, um so letztlich zur Optimierung der Versorgung der steigenden Zahl der Patienten beizutragen, bei denen gleichzeitig Glaukom und Katarakt vorliegen. Übersetzung aus Ophthalmic Res 2015;53:141-148 (DOI:10.1159/000377635)

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Ocular Biometric Parameters Associated With Intraocular Pressure Reduction After Cataract Surgery in Normal Eyes

Cited by 90 publications

References 21 publications

Lens parameters as predictors of intraocular pressure changes after phacoemulsification

Lens parameters as predictors of intraocular pressure changes after phacoemulsification

Cataract Surgery and Intraocular Pressure

Kataraktchirurgie und Augeninnendruck

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