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dc.contributor.authorPrata, Tiago dos Santos [UNIFESP]
dc.contributor.authorLima, V. C. [UNIFESP]
dc.contributor.authorMoraes, C. G. Vasconcelos de
dc.contributor.authorGuedes, L. M. [UNIFESP]
dc.contributor.authorMagalhaes, F. P. [UNIFESP]
dc.contributor.authorTeixeira, S. H. [UNIFESP]
dc.contributor.authorRitch, R.
dc.contributor.authorParanhos, A. [UNIFESP]
dc.identifier.citationEye. London: Nature Publishing Group, v. 25, n. 2, p. 201-207, 2011.
dc.description.abstractPurpose To investigate factors associated with changes in optic nerve head (ONH) topography after acute intraocular pressure (IOP) reduction in patients with primary open-angle glaucoma (POAG).Methods Untreated POAG patients (IOP >21 mm Hg) were prospectively enrolled. Systemic and ocular information were collected, including central corneal thickness (CCT) and corneal hysteresis (CH). All patients underwent confocal scanning laser ophthalmoscopy and tonometry (Goldmann) before and 1 h after pharmacological IOP reduction. the mean of three measurements was considered for analysis. Changes in each ONH topographic parameter were assessed (one eye was randomly selected), and those that changed significantly were correlated with patient's systemic and ocular characteristics.Results A total of 42 patients were included (mean age, 66.7 +/- 11.8 years). After a mean IOP reduction of 47.3 +/- 11.9%, significant changes were observed in cup area and volume, and in rim area and volume (P < 0.01), but not in mean cup depth (P = 0.80). Multiple regression analysis (controlling for baseline IOP and magnitude of IOP reduction) showed that CH (r(2) = 0.17, P < 0.01) and diabetes diagnosis (r(2) >= 0.21, P < 0.01) were negatively correlated with the magnitude of changes in ONH parameters, whereas the cup-to-disc ratio was positively correlated (r(2) = 0.30, P < 0.01). Age, race, disc area, and CCT were not significant (P >= 0.12). Including all significant factors in a multivariable model, only the presence of diabetes remained significantly associated with all ONH parameters evaluated (P < 0.01).Conclusions Different systemic and ocular factors, such as diabetes, CH, and the relative size of the cup, seem to be associated with the magnitude of changes in ONH topography after acute IOP reduction in POAG patients. These associations partially explain the ONH changes observed in these patients and suggest that other factors are possibly implicated in an individual susceptibility to IOP. Eye (2011) 25, 201-207; doi:10.1038/eye.2010.179; published online 3 December 2010en
dc.publisherNature Publishing Group
dc.rightsAcesso aberto
dc.subjectintraocular pressureen
dc.subjectoptic nerve headen
dc.subjectcorneal biomechanicsen
dc.titleFactors associated with topographic changes of the optic nerve head induced by acute intraocular pressure reduction in glaucoma patientsen
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionNew York Eye & Ear Infirm
dc.contributor.institutionNew York Med Coll
dc.description.affiliationUniversidade Federal de São Paulo, Dept Ophthalmol, BR-820 São Paulo, Brazil
dc.description.affiliationNew York Eye & Ear Infirm, Einhorn Clin Res Ctr, New York, NY 10003 USA
dc.description.affiliationNew York Med Coll, Valhalla, NY 10595 USA
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Ophthalmol, BR-820 São Paulo, Brazil
dc.description.sourceWeb of Science
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