Comparison of central corneal thickness estimated by an ultrasonic pachymeter and non-contact specular microscopy

Çevik, Sadık Görkem; Duman, Rahmi; Çevik, Mediha Tok; Kıvanç, Sertaç Argun; Budak, Berna Akova; Perente, İrfan; Duman, Rahmi

doi:10.5935/0004-2749.20160089

Cited by 8 publications

(7 citation statements)

References 18 publications

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“…Our results showed that the overall CCT measurements provided by Pentacam, PCI, and SM were highly ndings showing that the closest agreement was between the Pentacam and PCI measurements, whereas SM had the poorest agreement with the other three measuring methods. It is consistent with reports for phakic adults showing that SM-measured CCTs are lower than those obtained using UP (9), Pentacam (13) or PCI (15). SM in adult studies was found to have a poor agreement with the other CCTmeasuring methods since it frequently underestimates CCT (16).…”

Section: Discussionsupporting

confidence: 87%

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Central corneal thickness measurements in phakic, pseudophakic, and aphakic children with ultrasound pachymetry and different non-contact devices

Farvardin

Shamsi

Norouzpour

et al. 2021

Preprint

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Aims: Evidence for choosing a satisfactory device for central corneal thickness (CCT) measurement in children particularly pseudophakic and aphakic ones is insufficient. The aim of this study is to compare four differently-measured CCTs obtained using ultrasound pachymetry (UP), Pentacam, partial coherence interferometry (PCI), and specular microscopy (SM) in phakic, pseudophakic, and aphakic children and assess the agreement between the six pairs of the methods. Methods: Children with history of cataract surgery at age six or younger and phakic children were recruited into this study. CCT was measured using UP (Optikon 2000, Rome, Italy), Pentacam (Oculus Inc, Wetzlar, Germany), PCI (IOLMaster 700, Carl Zeiss Meditec AG, Jena, Germany), and SM (Topcon SP-3000P; Topcon Corporation, Japan).Results: One-hundred two eyes (53 phakic, 29 pseudophakic, and 20 aphakic eyes) were included. The mean ages (±SD) of phakic, pseudophakic, and aphakic cases were 9.75 (±3.3), 9.9 (±2.3), and 8.2 (±2.8) years respectively. The mean CCTs (±SE) for phakic children using Pentacam, PCI, UP, and SM were 549.7 (±5.0), 546.5 (±4.5), 565.9 (±5.5), and 506.2 (±4.4) mm respectively, for pseudophakic cases were 570.1 (±6.4), 565.0 (±6.1), 571.9 (±6.3), and 524.3 (±6.3) mm respectively, and for aphakic participants were 635.3 (±14.2), 635.4 (±14.5), 649.0 (±13.5), and 589.1 (±13.3) mm respectively. Conclusion: Compared to Pentacam and PCI, SM underestimated CCT particularly in phakic and pseudophakic children, whereas UP slightly overestimated CCT especially in phakic and aphakic children. Furthermore, Pentacam and PCI had the closest agreement. By contrast, SM had the poorest agreement with the other three methods.

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Section: Discussionsupporting

confidence: 87%

“…Its CCT measurements in adults have been comparable with those of UP (8). SM has also been used as a noncontact technique, but it frequently underestimates CCT in adults compared to UP (9). PCI has been recently used for CCT measurement, and it could also be an alternative multifunctional technique to measure CCT.…”

Section: Introductionmentioning

confidence: 99%

Central corneal thickness measurements in phakic, pseudophakic, and aphakic children with ultrasound pachymetry and different non-contact devices

Farvardin

Shamsi

Norouzpour

et al. 2021

Preprint

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“…This study compares central corneal pachymetry values obtained with several non-invasive devices. There are multiple previous publications that analyses the correlation between different devices (10)(11)(12)(13)(14).…”

Section: Discussionmentioning

confidence: 99%

Study of central corneal thickness using non-contact techniques: Specular microscopy (Nidek CEM-530), corneal tomography (Pentacam HR), and optical coherence tomography (Cirrus HD-OCT 5000) in healthy adult patients

González-Rodríguez¹,

Blázquez²,

Fernández-Cuenca³

2018

Cienc. Tecnol. Salud Vis. Ocul.

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Objective: To study and compare the value of central corneal thickness in a healthy adult population, using different non-contact techniques from daily clinical practice. Method: This work examines and compares the pachymetric measurements of 71 eyes of 36 healthy adult patients. Corneal thickness was evaluated using three non-contact instruments: a CEM-530 specular microscope (Nidek), Pentacam HR corneal tomography (Oculus), and Cirrus HD-OCT 5000 optical coherence tomography (Carl Zeiss Meditec). Tests were performed consecutively by a single observer in the same session and under the same environmental conditions. Results: The results obtained using the three devices are interchangeable, given that no statistically signiﬁcant difference was observed among them. The study did not ﬁnd statistically signiﬁcant difference with respect to gender either. Conclusion: These three non-contact methods for the measurement of corneal central pachymetry are a reliable alternative to ultrasonic contact pachymetry.

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Section: Introductionmentioning

confidence: 92%

Central corneal thickness measurements in phakic, pseudophakic, and aphakic children with ultrasound pachymetry and different non-contact devices

et al. 2021

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Aims: Evidence for choosing a satisfactory device for central corneal thickness (CCT) measurement in children particularly pseudophakic and aphakic ones is insu cient. The aim of this study is to compare four differently-measured CCTs obtained using ultrasound pachymetry (UP), Pentacam, partial coherence interferometry (PCI), and specular microscopy (SM) in phakic, pseudophakic, and aphakic children and assess the agreement between the six pairs of the methods.Methods: Children with history of cataract surgery at age six or younger and phakic children were recruited into this study. CCT was measured using UP (Optikon 2000, Rome, Italy), Pentacam (Oculus Inc, Wetzlar, Germany), PCI (IOLMaster 700, Carl Zeiss Meditec AG, Jena, Germany), and SM (Topcon SP-3000P; Topcon Corporation, Japan).Results: One-hundred two eyes (53 phakic, 29 pseudophakic, and 20 aphakic eyes) were included. The mean ages (±SD) of phakic, pseudophakic, and aphakic cases were 9.

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Comparison of central corneal thickness estimated by an ultrasonic pachymeter and non-contact specular microscopy

Cited by 8 publications

References 18 publications

Central corneal thickness measurements in phakic, pseudophakic, and aphakic children with ultrasound pachymetry and different non-contact devices

Central corneal thickness measurements in phakic, pseudophakic, and aphakic children with ultrasound pachymetry and different non-contact devices

Study of central corneal thickness using non-contact techniques: Specular microscopy (Nidek CEM-530), corneal tomography (Pentacam HR), and optical coherence tomography (Cirrus HD-OCT 5000) in healthy adult patients

Central corneal thickness measurements in phakic, pseudophakic, and aphakic children with ultrasound pachymetry and different non-contact devices

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