Work

Comparison of the Optical Biometry Based on Swept‐Source Optical Coherence Tomography and Ultrasound‐Based Biometry Device in Patients With Mature Cataract

Year: 2025

Type: article

Abstract: Objectives: To compare the agreement and reliability values between an optical biometry based on swept‐source optical coherence tomography (OCT) (IOLMaster 700; Carl Zeiss, Germany) and an ocular ultrasound‐based biometry device (Nidek; US‐4000 Echoscan, Japan) for axial length (AL), anterior chamber depth (ACD), and lens thickness (LT) measurements. Methods: In this cross‐sectional study, 101 eyes of 101 consecutive patients with mature cataract underwent routine eye examinations. Then, ocular biometry measurements through optical biometry and contact ultrasound biometry were carried out. The intraclass correlation coefficient (ICC) for reliability and Bland–Altman plots for the agreement between the mean findings of the two devices were analyzed. Results: The mean age of patients was 61.6 ± 13.1 (range, 27–94) years. For AL, the mean differences were small (0.10 mm), but with a very strong correlation and excellent agreement ( r = 0.999, ICC = 0.999, p < 0.001) between the two devices. Similarly, for ACD, the correlation was very high with excellent reliability ( r = 0.958, ICC = 0.974, p < 0.001), though the ultrasound biometer reported a slightly deeper mean ACD (by 0.13 mm). For LT, the agreement and correlation were lower ( r = 0.508, ICC = 0.663, p < 0.001), with the optical biometer reporting a thicker mean LT (0.31 mm) than the ultrasound biometer. Conclusion: AL and ACD measurements from the optical biometry based on swept‐source OCT and ultrasound can be used interchangeably in patients with mature cataract. However, LT measurements from the two devices should not be considered interchangeable.

Source: International Journal of Clinical Practice

DOI: 10.1155/ijcp/5679146

Authors: Masoud Khorrami-Nejad, Mehdi Khodaparast, Ghaith Hussein Ali, Ali Majdi, Mahsa Ranjbar-Pazooki, Elham Azizi

Institutions: Farabi Hospital, Tehran University of Medical Sciences, Al-Mustaqbal University

Language: English

Topic: Intraocular Surgery and Lenses

Subfield: Ophthalmology

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $2,350