Preoperative iris configuration and intraocular pressure after cataract surgery

Pradhan, Shilpi; Leffler, Christopher T.; Wilkes, Martin; Mahmood, Muneera A.

doi:10.1016/j.jcrs.2011.07.033

Cited by 14 publications

(32 citation statements)

References 19 publications

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“…We did not find any association between angle, lens and anterior segment parameters with postoperative IOP change. The lack of an association between postoperative IOP and preoperative anterior segment angle width and ACD, both in this study and in previous studies on open angle eyes, suggests that mechanisms of IOP reduction other than macroscopic angle closure may be at play 17 33 34 39. This is especially true in PXS eyes in which microscopic TM changes and clogging may be implicated in the development of IOP rise.…”

Section: Discussioncontrasting

confidence: 57%

“…When the IOP is close to episcleral venous pressure, IOP cannot decrease further as there is little resistance to aqueous outflow. In different studies, preoperative IOP value can predict 20%17 to 40%8 9 of the variation in postoperative IOP. In a study by Shingleton et al 8 on 882 eyes with PXS, higher preoperative IOP was associated with a greater reduction in IOP.…”

Section: Discussionmentioning

confidence: 99%

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Predictors of intraocular pressure change after phacoemulsification in patients with pseudoexfoliation syndrome

et al. 2016

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Section: Discussioncontrasting

confidence: 57%

Section: Discussionmentioning

confidence: 99%

Predictors of intraocular pressure change after phacoemulsification in patients with pseudoexfoliation syndrome

et al. 2016

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“…Although these indexes are neither validated nor globally implemented, they might be helpful when making decisions regarding which surgical procedure to perform, whether a simple lens extraction would suffice to control the IOP or a more invasive (yet more effective) procedure would be necessary. Finally, many other biometric factors have been proposed as independent predictors of post-operative IOP - anterior chamber area, anterior chamber width, lens thickness - but their usefulness warrants further investigation [20,24,25]. …”

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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“…Accurate identification of which patients will experience an IOP-lowering response could influence surgical decision-making, for instance determining when a cataract surgery alone would lower IOP adequately, or whether a concurrent glaucoma procedure is indicated [2, 14, 15]. Eyes with highest preoperative IOP have the greatest reduction in IOP in the long term [11].…”

Section: Introductionmentioning

confidence: 99%

“…Eyes with highest preoperative IOP have the greatest reduction in IOP in the long term [11]. Whereas multiple studies have evaluated the effect of biometric properties on IOP reduction following phacoemulsification surgery [1–8, 16], few have evaluated the role of modifiable intraoperative factors [2, 17, 18], such as the influence of phacoemulsification energy, on the long-term reduction of IOP.…”

Section: Introductionmentioning

confidence: 99%

Effect of intraoperative factors on IOP reduction after phacoemulsification

2016

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The purpose of the study was to determine the independent predictors of long-term intraocular pressure (IOP) reduction after cataract surgery with phacoemulsification. This is a retrospective review of uncomplicated cataract surgeries from 2006 to 2008 at the Baltimore VA Medical Center with longitudinal follow-up. Demographic, clinical, biometric, and intraoperative variables including phacoemulsification parameters were recorded. Univariate and multivariate linear regression were used to analyze the relationship between these variables and postoperative IOP, which was the outcome variable. Analysis was performed in 115 eyes of 115 patients who underwent uncomplicated phacoemulsification during the study period. There was an average postoperative IOP reduction through 12, 24, and 36 months of −1.7 ± 3.1, −1.5 ± 3.8, and −1.3 ± 2.6 mmHg, respectively. Higher preoperative IOP (P < 0.001), a more anterior relative lens position (P < 0.05), and longer phaco time (P < 0.05) were significantly associated with greater postoperative decrease in IOP using univariate analysis. Using multivariate analysis, preoperative IOP (P <0.001), and phaco time (P = 0.038) were associated with greater postoperative IOP reduction through 24 months. Phaco time is independently associated with IOP reduction after adjusting for age and preoperative IOP. Higher preoperative IOP is associated with a greater IOP-lowering effect after phacoemulsification.

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Preoperative iris configuration and intraocular pressure after cataract surgery

Cited by 14 publications

References 19 publications

Predictors of intraocular pressure change after phacoemulsification in patients with pseudoexfoliation syndrome

Predictors of intraocular pressure change after phacoemulsification in patients with pseudoexfoliation syndrome

Cataract Surgery and Intraocular Pressure

Effect of intraoperative factors on IOP reduction after phacoemulsification

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