Anterior chamber depth measurement using Pentacam and Biograph in children

ABSTRACT

Clinical relevance

Accurate measurement of the anterior chamber depth is very important. There is no report regarding the agreement between rotating Scheimpflug imaging (Pentacam HR) and biograph (Lenstar LS 900) in children. This study therefore explores the agreement between Pentacam and Biograph in measuring anterior chamber depth in children.

Background

This study aims to determine the agreement between Pentacam and Biograph in measuring anterior chamber depth in children.

Methods

The participants were students living in urban and rural areas of Shahroud, Iran, selected through cluster sampling. The students were transported to the examination site to undergo imaging and optometric tests. Pentacam imaging was then conducted, and biograph was used to measure biometric components. In this report, the anterior chamber depth was calculated from the corneal endothelium.

Results

Of 6624 students selected randomly, 5620 participated in the study. After applying the exclusion criteria, 4882 eyes were included in the final analysis. The mean anterior chamber depth measured by the Pentacam (3.09 ± 0.26 mm) was higher than that of biograph (3.04 ± 0.24 mm) (p < 0.001). The 95% limit of agreement (LOA) between the two devices was −0.19 to 0.09 mm. The variation of the difference between the two devices decreased, LOA became narrower, and the correlation coefficient of the devices increased with ageing. The highest intraclass correlation coefficient was seen among myopic (0.974) participants. The 95% LOA was −0.20 to 0.12 mm in hyperopic, −0.17 to 0.07 mm in myopic and −0.19 to 0.09 mm in emmetropic participants.

Conclusion

The Pentacam and Biograph can be used interchangeably for measuring the anterior chamber depth in children.

KEYWORDS:

• Anterior chamber depth
• Agreement
• Pentacam
• Lenstar
• Iran

Acknowledgements

Shahroud schoolchildren eye cohort study was supported by the Noor Ophthalmology Research Center and Shahroud University of Medical Sciences (grant numbers: 9329 and 960351).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the Shahroud University of Medical Sciences [9329,960351].