Distribution of Central Corneal Thickness and Intraocular Pressure in a Large Population of Turkish School Children

Şakalar, Yıldırım Bayezit; Keklíkçí, Uğur; Ünlü, Kaan; Alakuş, Mehmet Fuat; Yıldırım, Mehmet; Dag, Umut

doi:10.3109/09286586.2011.649227

Cited by 21 publications

(18 citation statements)

References 40 publications

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“…Mean IOP of youth aged from birth to 17 years old measured in different methods was12.0–19.3 mmHg in Europe, Turkey, India, Malaysia, China and other areas [6], [10], [11], [15], [18], [24], [25], [26]. The IOP using NCT in white subjects aged 5–15 years old is around 16 mmHg [27], [28], and similar IOP was observed in Chinese population [26].…”

Section: Discussionmentioning

confidence: 79%

“…While Bradfield [14] reported CCT increases from 1 to 11 years old, while the rate of increase steadily decreases, with year-to-year differences steadily decreasing and reaching a plateau after age 11. Sakalar [15] found CCT reaches adult values around 14 years old. However, others CCT measurements showed no age-related change in healthy children of Czech, Chinese and some other countries [10], [12], [16], [17].…”

Section: Discussionmentioning

confidence: 96%

“…Some scholars suggested there is no significant relationship between CCT and gender [10], [17], while other reports regarded CCT is thicker in boys than that of girls [12], [15], [18], [19]. Tong [18] reported CCT is thicker about 6.4 µm in boys than girls.…”

Section: Discussionmentioning

confidence: 99%

“…Some reports showed that IOP was significantly higher in girls than in boys [15], while other studies suggested gender were not associated with IOP [16]. The relationship of children between IOP and age is controversial.…”

Section: Discussionmentioning

confidence: 99%

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Correlation Analysis between Central Corneal Thickness and Intraocular Pressure in Juveniles in Northern China: The Jinan City Eye Study

et al. 2014

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PurposeTo determine the distributions and relation of central corneal thickness (CCT) and intraocular pressure (IOP) by NT-530P in Chinese juveniles, and the effect of gender, age, height, weight and refractive errors on the CTT and IOP.MethodsCCT and IOP of 982 eyes in 514 juveniles aged from 7 to 18 years were measured with NT-530P. Multi-linear regression and ANOVA analysis were used to analyze the relation of CCT and IOP, and the effect of gender, age, height, weight, refractive condition on CCT and IOP respectively.ResultsThe mean CCT and IOP were 554.19±35.46 µm and 15.31±2.57 mmHg. There were significant correlations between the CCT and IOP values. Linear regression analysis revealed a positive correlation between CCT and IOP (r = 0.44, P<0.05). Linear regression equation: IOP = −2.35+0.032CCT, which means the IOP will increase 0.32 mm Hg for every 10-µm increase in CCT. The mean of Corrected IOP (CIOP) was 15.32±2.38 mmHg and had no relation with CCT. There was a negative correlation between refraction degree and CCT (P<0.05), but no correlation between refraction degree and IOP. Multi-linear regression model revealed that the height, weight, age and gender have no effect on the distribution of CCT and IOP respectively.ConclusionsThere is a 0.32 mmHg increase in IOP for every 10-µm increase in CCT. The height, weight, age and gender has no effect on the distribution of CCT and IOP. CCT will become thinner with myopia diopters increases in juveniles. The measurement of CCT is helpful in evaluating the actual IOP correctly.

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Section: Discussionmentioning

confidence: 79%

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Correlation Analysis between Central Corneal Thickness and Intraocular Pressure in Juveniles in Northern China: The Jinan City Eye Study

et al. 2014

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“…Elflein et al (2014) considered that corneal thickness was associated with gender and men had slightly thicker central corneal thickness than women in all age decades (Strobbe et al, 2014;Hoffmann et al, 2013;Sakalar et al, 2012); nevertheless, Gros-Otero et al (2011) considered that corneal thickness was independent of gender. Vijaya et al (2010) considered that corneal thickness in various age groups had no obvious difference (Hoffmann et al, 2013;Linke et al, 2013); while Galgauskas et al (2013) suggested that it was related with age that, the elderly and women, expected to have thinner corneas than others and it is useful to repeat measurement of central corneal thickness (Thapa et al, 2012;Filipecka et al, 2013).…”

Section: Influence Factors Of Corneal Thicknessmentioning

confidence: 99%

Overview of Influence Factors on Corneal Thickness Measurement

Xiao¹,

Wang²,

Liu³

et al. 2015

American Journal of Biochemistry and Biotechnology

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Abstract:Corneal thickness is an important parameter of the structure of an eyeball. Prior to cornea refractive surgery, the measurement of corneal thickness has been given general importance. With the development of measuring instruments, the measurement of corneal thickness is safer, more accurate and more comfortable. In this study, common clinical measuring methods and their influencing factors are discussed.

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Correlation Between Intraocular Pressure and Central Corneal Thickness in Persian Children

et al. 2016

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IntroductionThis study aimed to determine intraocular pressure (IOP) and central corneal thickness (CCT) measurements in healthy Persian children to find clinical reference values in this ethnicity. Additionally, we examined the possible relationship between these measurements.MethodsThis cross-sectional study included 262 eyes of 131 Persian primary school children between 6 and 13 years of age. All eyes were healthy and had no anterior or posterior segment abnormalities, corneal disease, or evidence of glaucoma. Specular microscopy was used to measure CCT and both noncontact tonometry (NCT) and Goldmann applanation tonometer (GAT) were used to measure IOP. Correlations between IOP measurements were also examined.ResultsMean CCT was 513.47 ± 34.51 μm in the right eye (OD) and 513.93 ± 33.88 μm in the left eye (OS). The CCT was not significantly different between older (10–13 years) and younger (6–9 years) patients. Mean IOP measured with GAT was 13.86 ± 2.13 mmHg OD and 13.72 ± 2.04 mmHg OS and mean IOP measured with NCT was 15.26 ± 2.38 mmHg OD and 15.11 ± 2.18 mmHg OS. The IOP and CCT measured with GAT were weakly correlated (OD: r = 0.141, P = 0.114; OS: r = 0.236, P = 0.007). However, IOP and CCT measured with NCT (OD: r = 0.487, P = 0.000; OS: r = 0.456, P = 0.000) were moderately correlated. Our outcomes demonstrated that for 100 μm increase in CCT, IOP measured with GAT and NCT increased by 0.8 and 3.3 mmHg, respectively, in OD and by 1.4 and 2.9 mmHg in OS. Based on intraclass correlation coefficients, IOP measurements made with GAT and NCT were in fair agreement in OD and in good agreement in OS.ConclusionThe IOP and CCT in healthy Persian school children (6–13 years old) were positively correlated. Our findings revealed that corneal thickness is thinner in Persian children than in most other racial groups.FundingThis study has been funded by deputy dean in research of School of Medicine and deputy vice chancellor of Shiraz University of Medical Sciences, Shiraz, Iran.

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Distribution of Central Corneal Thickness and Intraocular Pressure in a Large Population of Turkish School Children

Cited by 21 publications

References 40 publications

Correlation Analysis between Central Corneal Thickness and Intraocular Pressure in Juveniles in Northern China: The Jinan City Eye Study

Correlation Analysis between Central Corneal Thickness and Intraocular Pressure in Juveniles in Northern China: The Jinan City Eye Study

Overview of Influence Factors on Corneal Thickness Measurement

Correlation Between Intraocular Pressure and Central Corneal Thickness in Persian Children

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