Agreements’profile of Scheimpflug-based optical biometer with gold standard partial coherence interferometry  

作　　者：Sara Sardari Akbar Fotouhi Ebrahim Jafarzadehpur Mehdi Khabazkhoob 

机构地区：[1]Research and Technology Deputy,Tehran University of Medical Sciences,Tehran 1417653761,Iran [2]Noor Ophthalmology Research Center,Noor Eye Hospital,Tehran 1968653111,Iran [3]Department of Epidemiology and Biostatistics,School of Public Health,Tehran University of Medical Sciences,Tehran 1417653761,Iran [4]Noor Research Center for Ophthalmic Epidemiology,Noor Eye Hospital,Tehran 1968653111,Iran [5]Department of Basic Sciences,School of Nursing and Midwifery,Shahid Beheshti University of Medical Sciences,Tehran 1968653111,Iran

出　　处：《International Journal of Ophthalmology(English edition)》2023年第12期2095-2104,共10页国际眼科杂志（英文版）

基　　金：Supported by the Deputy of Research and Technology of Tehran University of Medical Sciences as a PhD Thesis.

摘　　要：AIM:To determine the agreement of ocular biometric indices including axial length,keratometric readings,anterior chamber depth,and horizontal corneal diameter between the Pentacam AXL and IOL Master 500.METHODS:The study was a large cross-sectional population-based study(Tehran Geriatric Eye Study)conducted from Jan 2019 to Jan 2020.A total of 160 clusters were randomly selected proportional to size(each cluster contained 20 individuals)from 22 strata of Tehran city.All people aged 60y and above were invited to participate in the study.For all participants,preliminary ocular examinations were performed including the measurement of uncorrected and best-corrected visual acuity,objective and subjective refraction,anterior and posterior segment examinations.All participants underwent an ocular biometry using the Pentacam AXL and IOL Master 500.RESULTS:The 95%limits of agreement(LoA)between the two devices were-0.13 to 0.19,-0.15 to 0.17,and-0.13 to 0.19 in normal,pseudophakic,and cataractous eyes,respectively.With increasing the axial length,the difference between the two devices significantly increased in all three groups of normal,pseudophakic,and cataractous eyes(P<0.001).The 95% LoAs between the two devices regarding the mean keratometry shows that the best LoAs were seen in cataractous(-0.33 to 0.81)and followed by normal eyes(-0.36 to 0.86)and the pseudophakic eyes(-0.48 to 0.90)had the widest LoA.The 95% LoAs for horizontal corneal diameter measurements were-0.08 to 0.86,-0.03 to 0.83,and-0.07 to 0.87 in normal,pseudophakic,and cataractous eyes,respectively.The 95% LoAs of anterior chamber depth measurements between the two devices was-0.39 to 0.19 and-0.37 to 0.13 in normal eyes and cataractous,respectively.CONCLUSION:The Pentacam AXL has excellent agreement with the gold standard,IOL Master 500 in measuring axial length.In eyes with cataracts,the difference between the two devices is more scattered.With the increasing of axial length,the difference between the two devices increased,which should be considered

关 键 词：ocular biometry optical biometer Pentacam AXL 

分 类 号：R739.7[医药卫生—肿瘤]