Correlations between different tonometries and ocular biometric parameters in patients with primary congenital glaucoma

Mendes, Marcio Henrique; Betinjane, Alberto Jorge; Quiroga, Veronica Andrea

doi:10.1590/s0004-27492013000600007

Cited by 10 publications

(7 citation statements)

References 19 publications

(10 reference statements)

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“…There are several studies regarding corneal thickness in children but comparative studies are very rare. In the reports, the range of corneal thickness changes from 529 to 564 µm and the average is likely 550 µm (Faramarzi et al 2010;Bradfield et al 2011;Fern et al 2012;Resende et al 2012;Sahin et al 2008;Coste et al 2008;Hussein et al 2004;Mendes et al 2011). In our study, central corneal thickness is 548 µm in the study group and 559 µm in the control group.…”

Section: Central Corneal Thicknesssupporting

confidence: 48%

Comparing biometry in normal eyes of children with unilateral cataract/corneal disease to age-matched controls

et al. 2016

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Section: Central Corneal Thicknesssupporting

confidence: 48%

Comparing biometry in normal eyes of children with unilateral cataract/corneal disease to age-matched controls

et al. 2016

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“…DCT measurements were required to have a quality value of Q1 or Q2. Goldmann Applanation Tonometry was performed using the AT 900 (Haag-Streit, Koeniz, Switzerland) [7,8,[11][12][13][14]. Before each measurement, topical anesthetic eye drops 0.5% topical The system presents images with sectional planes of 90 and 180 degrees, and the distribution of total measurement points distributed in several measurements from the apex of the cornea to its periphery, in grayscale.…”

Section: Intraocular Pressure Measurementsmentioning

confidence: 99%

“…DCT measurements were required to have a quality value of Q1 or Q2. Goldmann Applanation Tonometry was performed using the AT 900 (Haag-Streit, Koeniz, Switzerland) [7,8,[11][12][13][14]. Before each measurement, topical anesthetic eye drops 0.5% topical proparacaine hydrochloride (Anestalcon, Alcon Laboratories, Inc., Fort Worth, TX, USA) and fluorescein eye drops (Fluoresceina Sódica, Ophthalmos, SP, Brazil) were instilled in each eye.…”

Section: Intraocular Pressure Measurementsmentioning

confidence: 99%

“…Goldmann applanation tonometry (GAT) remains widely regarded as the gold standard method of IOP measurement [6,[11][12][13][14][15], but a range of newer devices are available including non-contact tonometry (NCT), rebound tonometry (RT) and dynamic contour tonometry (DCT) [6][7][8][9]11,[16][17][18][19][20][21][22][23][24][25][26][27][28]. NCT uses an air puff that deforms the cornea, with the advantage of not requiring anesthetic eye drops [8,21,26,29];…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Corneal Thickness, Densitometry and Curvature on Intraocular Pressure Measurements Obtained by Applanation, Rebound and Dynamic Contour Tonometry

Junior

Augusto²,

Gracitelli

et al. 2020

Vision

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Evaluate the effect of corneal thickness, densitometry and curvature on intraocular pressure (IOP) measurements obtained by Goldmann applanation tonometry (GAT), non-contact tonometry (NCT), rebound tonometry (RT), and dynamic contour tonometry (DCT). A cross-sectional prospective study involving 40 participants was performed. Corneal measurements were obtained using Pentacam (Oculus GMbH, Wetzlar, Germany), densitometry was measured at annuli of 0–2, 2–6, 6–10 and 10–12 mm. The relationship between corneal thickness (central, 4 and 6 mm), corneal astigmatism and corneal densitometry and IOP was examined. There was a significant relationship between corneal thickness (central, 4 and 6 mm) and GAT180, GAT90, RT, and NCT (P < 0.001 for all comparisons) but not for DCT. Higher corneal densitometry (6–10 mm and 10–12 mm zones) was associated with higher IOP from GAT180 and GAT90, and higher densitometry in the 6–10 mm zone correlated with higher IOP from NCT, however corneal densitometry increased with age. Accounting for age, the relationship between corneal densitometry and IOP measurements was not significant. In eyes with greater corneal astigmatism there was a greater difference between GAT90 and GAT180 measurements. IOP measurements may be affected by corneal thickness, densitometry and curvature. DCT was less affected by properties of the cornea compared to other devices.

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“… 6 In this regard, central corneal thickness (CCT) has also been demonstrated to be associated with the onset and progression of glaucoma. 7 Moreover, thicker or thinner central corneas may lead to either overestimation or underestimation of intraocular pressure (IOP), 8 , 9 which is the most important causal and treatable risk factor for glaucoma. Previous studies indicated that CCT profile affects Goldmann applanation tonometry–measured IOP.…”

Section: Introductionmentioning

confidence: 99%

Association of Diabetes With Central Corneal Thickness Among a Multiethnic Asian Population

et al. 2019

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Key Points Question Are diabetes status, random glucose, and hemoglobin A 1c associated with central corneal thickness (CCT) measurement? Findings In this cross-sectional study of 8846 multiethnic Asian adults, diabetes and glucose and hemoglobin A 1c levels were associated with thicker CCT; these associations were significant in the subgroup with diabetes but not in the subgroup without diabetes. A meta-analysis including 12 previous studies showed that CCT was 12.8 μm thicker in eyes of patients with diabetes. Meaning Findings from this study are important for CCT determination and may provide useful information on the interpretation of intraocular pressure in patients with diabetes.

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Correlations between different tonometries and ocular biometric parameters in patients with primary congenital glaucoma

Cited by 10 publications

References 19 publications

Comparing biometry in normal eyes of children with unilateral cataract/corneal disease to age-matched controls

Comparing biometry in normal eyes of children with unilateral cataract/corneal disease to age-matched controls

The Effect of Corneal Thickness, Densitometry and Curvature on Intraocular Pressure Measurements Obtained by Applanation, Rebound and Dynamic Contour Tonometry

Association of Diabetes With Central Corneal Thickness Among a Multiethnic Asian Population

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