Comparison of Rebound Tonometer and Goldmann Handheld Applanation Tonometer in Congenital Glaucoma

Martinez-de-la-Casa, José M.; García‐Feijoó, Julián; Saenz-Frances, Federico; Vizzeri, Gianmarco; Fernandez-Vidal, Ana; Méndez-Hernández, Carmen; García–Sánchez, J.

doi:10.1097/ijg.0b013e31816f760c

Cited by 58 publications

(47 citation statements)

References 18 publications

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“…Проблема исследования офтальмотонуса у детей с врождённой глаукомой также широко обсуждается, однако, главным образом, в за-рубежной литературе [21,24,30,38,47]. Так, M.R.…”

Section: Doi: 1017816/ov9323-31unclassified

“…Martinez-de-la-Casa et al (2009), срав-нив тонометры Icare и Перкинса у пациентов с врождённой глаукомой, подтвердили, что Icare завышает результаты измерения также и отно-сительно тонометра Перкинса. Авторы отметили положительную корреляцию между результатом определения ВГД и ЦТР и не наблюдали зави-симости между радиусом кривизны роговицы и длиной переднезадней оси глазного яблока [38]. M.L.…”

Section: Doi: 1017816/ov9323-31unclassified

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Features of measurement of intraocular pressure in children

Tugeeva

Эльдаровна²,

Brzheskiy

et al. 2016

Ophthalmology Reports

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This review discusses the results of various studies conducted in recent years on the comparison of modern methods of measuring intraocular pressure (IOP) in children: pneumotonometry, Maklakov applanation tonometry, and tonometry using Perkins tonometer, Goldmann tonometer, Icare tonometer, Ocular Response Analyzer, TonoPen handheld tonometer, transpalpebral tonometer TIOP01, or a dynamic contour Pascal tonometer. This study discusses the advantages and disadvantages of different methods of measurement of IOP in children, including the evaluation of patients with fibrous lens capsules that might affect the measurement of IOP and an analysis of the characteristics of evaluation of IOP in children with congenital glaucoma.

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Section: Doi: 1017816/ov9323-31unclassified

Features of measurement of intraocular pressure in children

Tugeeva

Эльдаровна²,

Brzheskiy

et al. 2016

Ophthalmology Reports

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Section: Dear Editormentioning

confidence: 99%

“…What was the inter-observer and intra-observer agreement in their measurements? Most importantly, the order in which RT and GAT were performed is not mentioned, and it is not described whether or not the examiner measured IOP with GAT once or if a repeated measurement was made and a mean calculated, as is preferred by several authors [2,3].Rebound tomometry (RT) has been found to overestimate IOP compared to GAT when RT is used first but not when used immediately after GAT [4]. This difference may have significant implications in the study by Sinha et al: if RT was consistently used after repeated GAT measurements, then this could account for, at least in part, the large limits of agreement found between the two methods in the higher range of intraocular pressures.…”

mentioning

confidence: 99%

IOP measurement: importance of methodology

2015

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We read with interest the article by Sinha et al. regarding IOP agreement between I-care TA01 rebound tonometer and the Goldmann applanation tonometry (GAT) in eyes with and without glaucoma [1]. The authors conclude that the two methods cannot be used interchangeably due to large limits of agreement.There is, however, a significant point to make regarding methodology in this study. The authors do not describe exactly how IOP measurements were made: Did both independent masked and experienced ophthalmologists measure IOP with both instruments? What was the inter-observer and intra-observer agreement in their measurements? Most importantly, the order in which RT and GAT were performed is not mentioned, and it is not described whether or not the examiner measured IOP with GAT once or if a repeated measurement was made and a mean calculated, as is preferred by several authors [2,3].Rebound tomometry (RT) has been found to overestimate IOP compared to GAT when RT is used first but not when used immediately after GAT [4]. This difference may have significant implications in the study by Sinha et al.: if RT was consistently used after repeated GAT measurements, then this could account for, at least in part, the large limits of agreement found between the two methods in the higher range of intraocular pressures.

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“…It has a similar reliability to a Tono-Pen, with a tendency to overestimate IOP in known or suspected glaucoma cases compared with applanation tonometry. [18][19][20][21][22][23][24] Ideally, the eyes should be in the primary position and motionless as pressure readings may be altered by eye movements. Avoid measuring the IOP when using a lid speculum or when the baby is crying or squeezing his or her lids, as all of these may falsely elevate the IOP.…”

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confidence: 99%

Pediatric glaucoma: current perspectives

Marchini¹,

Toscani²,

Chemello³

2014

PHMT

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"Childhood glaucoma" is a heterogeneous group of severe pediatric conditions often associated with significant visual loss and characterized by elevated intraocular pressure (IOP) and optic-disk cupping. Successful IOP control is crucial but challenging and most often achieved surgically, with medical therapy playing a supportive role. There are many classifications of childhood glaucoma, but they can simply be divided into primary, in which a developmental abnormality of the anterior chamber angle only exists, and secondary, in which aqueous outflow is reduced due to independent mechanisms that secondarily impair the function of the filtration angle. The worldwide prevalence of childhood blindness ranges from 0.03% in high-income countries to 0.12% in undeveloped countries. The majority of cases do not have an identified genetic mutation and, where the mutation is known, the genes often account for only a small proportion of cases. Several pathogenetic mechanisms are known to contribute to the development of childhood glaucoma. Whatever the cause, it results in a reduced aqueous outflow at the level of the trabecular meshwork. Age of onset and magnitude of the elevated IOP largely determine the clinical manifestation the high variability of clinical manifestations. Glaucoma from any cause in a neonate and infant is characterized by the classic triad of epiphora, photophobia, and blepharospasm, and could be associated with eye enlargement (buphthalmos) and Haab striae. The eye examination, usually performed under general anesthesia, includes: tonometry, anterior-segment examination, gonioscopy, corneal diameter and axial length measurement, dilated fundoscopy with optic-nerve-head evaluation. Medical therapy, considering the high frequency of side effects, is generally used as temporizing IOP-lowering treatment before surgery or as adjuvant treatment postoperatively in case of partially successful procedures for refractory glaucomas. Surgery is the nodal point of the management of refractory childhood glaucoma, so it is crucial to opt for a forward-looking strategy to reach the target IOP and minimize the visual loss.

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Comparison of Rebound Tonometer and Goldmann Handheld Applanation Tonometer in Congenital Glaucoma

Abstract: The RBT overestimates the IOP compared with the Perkins tonometer in patients with congenital glaucoma. Differences in readings between the 2 tonometers become larger as the CCT increases.

Cited by 58 publications

References 18 publications

Features of measurement of intraocular pressure in children

Features of measurement of intraocular pressure in children

IOP measurement: importance of methodology

Pediatric glaucoma: current perspectives

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