Comparison of Anterior Chamber Depth Measurements using Orbscan II and IOLMaster

Ib, Frisch; Rabsilber, TM; Becker, KA; Reuland, AJ; Auffarth, Gerd U.

doi:10.1177/112067210701700308

Cited by 17 publications

(9 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this study, the first and second measurements also showed good reproducibility. Previous research has shown that the variability of ACD values measured with the Orbscan II or the IOLMaster (Carl Zeiss Meditec AG, Jena, Germany) were below clinically relevant levels (Frisch et al. 2007).…”

Section: Discussionmentioning

confidence: 99%

Anterior chamber depth and iridocorneal angle in healthy White subjects: effects of age, gender and refraction

Rüfer

Schröder

Klettner

et al. 2010

Acta Ophthalmologica

View full text Add to dashboard Cite

ABSTRACT.Purpose: Prior to phakic intraocular lens implantation, it is important to obtain precise knowledge of the anterior chamber depth (ACD). Accurate topographic evaluation of the iridocorneal angle is helpful in estimating risk for angle-closure glaucoma. This study investigated the use of the Orbscan II system to measure ACD and the iridocorneal angle in healthy subjects and assessed the influences of age, gender and spherical equivalent on these parameters. Methods: The Orbscan II system was used to determine the ACD and iridocorneal angle in eight different positions in 390 healthy White subjects with a mean age of 41 ± 16 years (range 10-80 years). The sample included 242 male and 148 female subjects. The influences of age, gender and spherical equivalent were assessed using multiple regression analysis. Results: Mean ACD was 2.87 ± 0.04 mm in male subjects and 2.81 ± 0.37 mm in female subjects. The explanatory variables relevant to the ACD were age (partial regression coefficient B = ) 0.0115, p < 0.0001), spherical equivalent (B = ) 0.0562, p < 0.0001) and gender (B = 0.0996, p = 0.0036). The mean iridocorneal angle (MIA) was 30.7 ± 2.0°in male and 31.6 ± 2.1°in female subjects. The variables relevant to the MIA were gender (B = ) 0.865, p < 0.0001), age (B = ) 0.017, p = 0.0007) and spherical equivalent (B = ) 0.121, p = 0.001). The superior iridocorneal angle displayed the strongest negative correlation with age, whereas the temporal angle exhibited the least correlation with age. Conclusions: The decline in ACD appears to be linear with age, amounting to a mean of 0.58 mm over 50 years. This may become clinically relevant in the use of phakic intraocular lenses. In addition, the angle is more severely constricted in the superior quadrant than in the temporal quadrant.

show abstract

Section: Discussionmentioning

confidence: 99%

Anterior chamber depth and iridocorneal angle in healthy White subjects: effects of age, gender and refraction

Rüfer

Schröder

Klettner

et al. 2010

Acta Ophthalmologica

View full text Add to dashboard Cite

show abstract

“…Lavanya et al compared the IOLMaster with the Visante (Carl Zeiss Meditec AG) anterior segment optical coherence tomography and found deeper anterior chamber measurements 13. Other devices used to measure ACD include corneal topography machines such as the Orbscan (Bausch & Lomb Ltd, Rochester, New York, USA) or the Scheimpflug-based analysing systems Pentacam and Galilei (Ziemer, Opthalmic Systems AG, Port, Switzerland) 14 15. Modified and improved ultrasound technologies are also recommended, although their accuracy is still very much dependent on the skills of a trained examiner 16.…”

Section: Discussionmentioning

confidence: 99%

Accuracy of a new partial coherence interferometry analyser for biometric measurements

Holzer

Mamusa²,

Auffarth³

2009

British Journal of Ophthalmology

152

View full text Add to dashboard Cite

show abstract

“…Nowadays, there are many non‐contact methods to measure anterior chamber distances. The principle of measurement is based on partial coherence interferometry (PCI), Scheimpflug imaging, scanning‐slit tomography and optical coherence tomography (OCT) . There have been numerous studies assessing the agreement among these devices to measure ACD and WTW, especially those that assessed the interchangeability among the OCT and other non‐contact devices .…”

mentioning

confidence: 99%

“…There have been numerous studies assessing the agreement among these devices to measure ACD and WTW, especially those that assessed the interchangeability among the OCT and other non‐contact devices . The agreement among the Pentacam HR, IOLMaster, Orbscan II is less extensive . Unfortunately, no studies assessing the agreement among contact and non‐contact devices are available when they come to measure WTW.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Interchangeability among five devices that measure anterior eye distances

Domínguez‐Vicent

Pérez-Vives

Ferrer-Blasco

et al. 2015

Clinical and Experimental Optometry

View full text Add to dashboard Cite

Purpose The aim was to study the interchangeability of various devices that measure anterior chamber depth (ACD) and white‐to‐white (WTW) distance. Methods Eighty right eyes of eighty patients aged 20 to 40 years were included. Their spherical equivalent ranged from ‐4.25 to +1.00 dioptres. Each eye's ACD and the WTW distance were measured using the following devices: a Castroviejo surgical calliper, CA‐200F Corneal Analyser, Orbscan II, Pentacam HR and IOLMaster 500. Results The Pentacam HR measured significantly greater ACD (p < 0.01) than the other two devices, whereas IOLMaster 500 and Orbscan II yielded comparable (p > 0.01) distances. Nonetheless, in every device comparison, the mean difference was within clinically acceptable limits. The device comparison showed that for WTW distance measurements IOLMaster 500 yields the greatest value (p < 0.01), whereas CA‐200F Corneal Analyser yields the smallest one (p < 0.01). Conclusion Pentacam HR, Orbscan II and IOLMaster 500 can be used interchangeably to measure ACD, whereas Orbscan II, IOLMaster 500, Castroviejo surgical calliper and CA‐200F Corneal Analyser cannot be considered interchangeable, when it comes to measuring WTW distance.

show abstract

Comparison of Anterior Chamber Depth Measurements using Orbscan II and IOLMaster

Abstract: Regarding clinical application, both systems seem to be equally good and interchangeable in clinical practice in terms of ACD evaluation.

Cited by 17 publications

References 30 publications

Anterior chamber depth and iridocorneal angle in healthy White subjects: effects of age, gender and refraction

Anterior chamber depth and iridocorneal angle in healthy White subjects: effects of age, gender and refraction

Accuracy of a new partial coherence interferometry analyser for biometric measurements

Interchangeability among five devices that measure anterior eye distances

Contact Info

Product

Resources

About