Central Corneal Thickness Measurement in Clinical Practice

Shildkrot, Yevgeniy; Liebmann, Jeffrey M.; Fabijańczyk, Bartosz; Tello, Celso; Ritch, Robert

doi:10.1097/01.ijg.0000176929.83734.b4

Cited by 19 publications

(21 citation statements)

References 35 publications

(46 reference statements)

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“…However, accuracy of US pachymeters was studied before, and considerable differences in measurements from the same corneas by several US pachymeters from different manufacturers were reported. 31,32 The absence of tear film, the refractive index of the cornea, and US velocity in the cornea may also affect the results. The different operating principles of these two devices may also play a role in this inconsistency.…”

Section: Discussionmentioning

confidence: 98%

The Reliability of Central Corneal Thickness Measurements by Ultrasound and by Orbscan System in Schoolchildren

Başmak

Şahin

Yıldırım

2006

Current Eye Research

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Section: Discussionmentioning

confidence: 98%

The Reliability of Central Corneal Thickness Measurements by Ultrasound and by Orbscan System in Schoolchildren

Başmak

Şahin

Yıldırım

2006

Current Eye Research

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“…29 Shildkrot et al emphasized the importance of having more than one measurement of CCT for glaucoma patients and recommended repeating not only CCT measurements but also other follow-up parameters. 30 These recent findings increased the importance of CCT, making it of paramount importance to study different nationalities' normative values for CCT. With the appreciation of the significance of CCT, elucidating other factors potentially influencing CCT measurements has gained more attention.…”

Section: Discussionmentioning

confidence: 98%

Factors Influencing Central Corneal Thickness in a Turkish Population

Altinok

Şen

Yazıcı

et al. 2007

Current Eye Research

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There are studies showing the variation of CCT values among different nations and ethnicities. There is no agreement about the relationship between age, IOP, Kh-Kv, spherical equivalence of refractive error, systemic disorders, menopause and CCT. In our study CCT was correlated with Kh-Kv and IOP in correlation analysis but in multivariate regression analysis only Kv appeared to influence corneal thickness.

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“…This was for logistical reasons in such a large screening exercise with much data to collect from each individual. Some studies have shown significant variability in CCT measured by ultrasound pachymetry on different occasions, [31][32][33] although others have found a high degree of reproducibility. 34,35 Finally, we cannot be sure that those considered not to have diabetes would all be deemed negative by strict criteria as it was impractical to perform glucose tolerance tests on all subjects.…”

Section: Discussionmentioning

confidence: 99%

The relationship between central corneal thickness and the optic disc in an elderly population: the Bridlington Eye Assessment Project

Hawker

Edmunds

Vernon

et al. 2007

Eye

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Purpose To determine population-based normative CCT data for elderly white subjects, with and without diabetes, and to explore the relationship between CCT and IOP and HRT2 measurements in such subjects with normal visual fields. Methods All eligible subjects were consecutive in a population screened for eye disease. CCT was measured by ultrasound pachymetry, and the optic disc was morphometrically defined using Heidelberg retinal tomography (HRT2). Inclusion criteria were: (1) normal visual field on suprathreshold testing and (2) corrected logMAR acuity of at least 0.3 in both eyes. Subjects with significant corneal pathology, previous corneal surgery, or known history of glaucoma or treatment for raised intraocular pressure were excluded. One eye was randomly selected from each subject for analysis. Results In all, 983 eyes of 983 subjects were included with 690 HRT images deemed acceptable for the analysis. The mean age (414 men and 569 women) was 73.3 years (minimum 65 years). Mean (SD) CCT was 544.1 (36.5) lm, with a normally distributed range of 429-633 lm. There was no significant difference in CCT between men and women (mean CCT 546.1 and 542.7 lm, respectively, P ¼ 0.15, Student's t-test), though CCT was correlated weakly and negatively with age (Pearson's r ¼ À0.063, P ¼ 0.047). Diabetic patients (n ¼ 103) had a greater mean CCT than non-diabetic patients (551.9 and 543.0 lm respectively, P ¼ 0.02). No significant correlation was found between any global optic disc parameter and CCT in the 690 eyes analysed. Conclusion Elderly white eyes with normal fields have CCTs that are normally distributed, with those from diabetic persons having greater CCTs. No clear evidence of a relationship between CCT and HRT2 optic disc parameters used in glaucoma diagnosis was found.

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Central Corneal Thickness Measurement in Clinical Practice

Cited by 19 publications

References 35 publications

The Reliability of Central Corneal Thickness Measurements by Ultrasound and by Orbscan System in Schoolchildren

The Reliability of Central Corneal Thickness Measurements by Ultrasound and by Orbscan System in Schoolchildren

Factors Influencing Central Corneal Thickness in a Turkish Population

The relationship between central corneal thickness and the optic disc in an elderly population: the Bridlington Eye Assessment Project

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