Association between Rates of Visual Field Progression and Intraocular Pressure Measurements Obtained by Different Tonometers

Susanna, Bianca Nicolela; Ogata, Nara G.; Daga, Fábio B.; Susanna, Carolina N.; Diniz-Filho, Alberto; Medeiros, Felipe A.

doi:10.1016/j.ophtha.2018.07.031

Cited by 19 publications

(11 citation statements)

References 29 publications

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“…Second, it is possible that the Icare IC-100 model gives systematically lower IOP measurements than GAT which is the reference standard for measurement of IOP. This bias towards lower IOP readings with this Icare model has also been observed in two other recent studies 41 42. It was emphasised to all participants that an IOP below our referral threshold did not necessarily mean that they did not have glaucoma.…”

Section: Discussionsupporting

confidence: 82%

Feeling the pressure: a cross-sectional study exploring feasibility of a healthcare Pop-Up for intraocular pressure measurements in shopping centres in England

et al. 2019

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ObjectivesTo test the hypothesis that a shopping centre Pop-Up health check combining an intraocular pressure (IOP) check with a general health check (blood pressure (BP)) is more readily accepted by the general public than an IOP check only. We investigate public awareness of IOP compared with BP and the feasibility of measuring IOP in large numbers in a Pop-Up.DesignA cross-sectional study using a tailor-made healthcare Pop-Up.SettingThe ‘Feeling the Pressure’ Pop-Up was sited in eight regionally-different shopping centres in England.ParticipantsAdult members of the public in shopping centres.MethodsOn one day we measured IOP only and on another measured BP and IOP. IOP was measured by Icare IC100 tonometer (Helsinki, Finland). Potential participants were asked about their awareness of IOP and BP and when they last visited their optometrist.ResultsMore people attended the combined BP + IOP days (461; 60%; 95% CI 56% to 64%) than IOP-only days (307; 40%, 95% CI 37% to 43%) over 16 days of testing. We recorded IOP in 652 participants (median (IQR) age and IOP of 54 (42 to 68) years and 13 (11 to 15) mm Hg, respectively). Fewer people reported awareness about IOP (19%, 95% CI 16% to 23%) compared with BP (71%, 95% CI 66% to 75%). Of 768 participants, 60 (8%) reported no previous optometric eye examination and 185 (24%) reported >2 years since their most recent examination.ConclusionsMeasuring IOP in large numbers of the public via a shopping centre Pop-Up is feasible. Public engagement was greater when a BP check was offered alongside an IOP check, suggesting unfamiliar health checks can be promoted by aligning them with a more familiar check. Our findings hint at strategies for public health schemes that engage the public with their eye health.

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Section: Discussionsupporting

confidence: 82%

Feeling the pressure: a cross-sectional study exploring feasibility of a healthcare Pop-Up for intraocular pressure measurements in shopping centres in England

et al. 2019

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“…18,19 IOPcc is regarded as being better able to predict clinically relevant outcomes than conventional IOP measurement. 20…”

Section: Measurement Of Corneal Biomechanical Propertiesmentioning

confidence: 99%

Association of Corneal Hysteresis With Lamina Cribrosa Curvature in Primary Open Angle Glaucoma

Lee

Kim

Lee

et al. 2019

Invest. Ophthalmol. Vis. Sci.

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Citation: Lee KM, Kim T-W, Lee EJ, Girard MJA, Mari JM, Weinreb RN. Association of corneal hysteresis with lamina cribrosa curvature in primary open angle glaucoma. Invest Ophthalmol Vis Sci. 2019;60:4171-4177. https://doi.org/10.1167/iovs.19-27087 PURPOSE. To investigate whether corneal biomechanical properties are associated with the lamina cribrosa (LC) curvature in eyes with primary open angle glaucoma (POAG). METHODS.Corneal biomechanical properties and LC curvature were assessed in 65 treatmentnaïve POAG patients. Corneal biomechanical properties, including corneal hysteresis (CH), corneal resistance factor (CRF), and corneal-compensated intraocular pressure (IOPcc), were measured using an ocular response analyzer (ORA; Reichert Ophthalmic Instruments). LC curvature was assessed by measuring the LC curvature index (LCCI) on B-scan images obtained using spectral-domain optical coherence tomography (OCT). The LCCI was determined by measuring LC curve depth on the anterior LC surface and the width of the reference line. RESULTS.The LCCI was correlated with CH (P ¼ 0.001), CRF (P ¼ 0.012) and IOPcc (P ¼ 0.001) in the univariate analysis. To adjust multicollinearity, principal component analysis was performed, and multivariate regression analyses were conducted using one variable from each component. The larger LCCI was associated with larger IOPcc (P < 0.001), smaller CRF (P ¼ 0.001) and smaller CH (P < 0.001). CONCLUSIONS.Lower CH was associated with a more posteriorly curved LC in treatment naïve POAG patients. This finding may provide a basic explanation for the reported association between CH and an increased risk for glaucoma development and progression, and support a potential value of CH for risk assessment for glaucoma.

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“…Ultimately, the measure of IOP that best predicts who will get worse is the device most able to help us make the right decisions. A recent prospective observational study 22 and a large randomized controlled clinical trial 23 both showed that over two thirds of the variance in rates of visual field progression remained unexplained by IOP alone, making this a poor predictive feature used in isolation. However, both studies showed that the ORA derived IOPcc was superior to GAT in predicting rates of glaucoma progression.…”

mentioning

confidence: 99%

When gold standards change: time to move on from Goldmann tonometry?

et al. 2020

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Association between Rates of Visual Field Progression and Intraocular Pressure Measurements Obtained by Different Tonometers

Abstract: Mean ORA IOP was more predictive of rates of visual field loss than mean IOP obtained by GAT or RBT. By correcting for corneal-induced artifacts, IOPcc measurements may present significant advantages for predicting clinically relevant outcomes in patients with glaucoma.

Cited by 19 publications

References 29 publications

Feeling the pressure: a cross-sectional study exploring feasibility of a healthcare Pop-Up for intraocular pressure measurements in shopping centres in England

Feeling the pressure: a cross-sectional study exploring feasibility of a healthcare Pop-Up for intraocular pressure measurements in shopping centres in England

Association of Corneal Hysteresis With Lamina Cribrosa Curvature in Primary Open Angle Glaucoma

When gold standards change: time to move on from Goldmann tonometry?

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