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

International Journal of Ophthalmology(English edition) 2023年第12期16卷 2095-2104页

作者： Sara Sardari Akbar Fotouhi Ebrahim Jafarzadehpur Mehdi Khabazkhoob Research and Technology Deputy Tehran University of Medical SciencesTehran ***Iran Noor Ophthalmology Research Center Noor Eye HospitalTehran ***Iran Department of Epidemiology and Biostatistics School of Public HealthTehran University of Medical SciencesTehran ***Iran Noor Research Center for Ophthalmic Epidemiology Noor Eye HospitalTehran ***Iran Department of Basic Sciences School of Nursing and MidwiferyShahid Beheshti University of Medical SciencesTehran ***Iran

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 ***: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 *** people aged 60y and above were invited to participate in the *** 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 *** participants underwent an ocular biometry using the Pentacam AXL and IOL Master ***: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,*** 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 *** 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,*** 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,***:The Pentacam AXL has excellent agreement with the gold standard,IOL Master 500 in measuring axial *** eyes with cataracts,the difference between the two devices is more *** the increasing of axial length,the difference between the

关键词： ocular biometry optical biometer Pentacam AXL

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Comparison of a new optical biometer and a standard biometer in cataract patients

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Eye and Vision 2016年第1期3卷 283-288页

作者： Pipat Kongsap Department of Ophthalmology Prapokklao HospitalChanthaburi 22000Thailand

Background:Cataract surgery is the most common surgical procedure in *** data and accurate intraocular lens(IOL)calculations are very important in achieving the desired refractive *** aim of this study was to compare measurements using a new optical low coherence reflectometry(OLCR)biometer(OA-2000)and the gold standard partial coherence interferometry(PCI)optical biometer(IOLMaster 500).Methods:Ocular biometry of cataract patients were measured by the OA-2000 and IOLMaster 500 to compare keratometry(K),axial length(AL),anterior chamber depth(ACD),white-to-white(WTW)diameter,and IOL power using the SRK/T ***:One hundred and two eyes of 68 cataract patients were evaluated with the two optical *** mean values of the AL,K,ACD,and WTW differed very little(OCLR biometer,23.12 mm,44.50 diopters(D),3.06,and 11.64 mm,respectively;PCI biometer,23.18 mm,44.6 D,3.15,and 11.86 mm,respectively),but the differences were significant(all,p≤0.05).The AL,K,and ACD showed excellent correlations(r=0.999,0.980,and 0.824,respectively;all pbiometer showed very a strong agreement with the standard PCI optical biometer for almost all ocular biometry measurements,except for the WTW *** registration:TCTR20160614003;date 06/09/2016;‘retrospectively registered’.

关键词： Intraocular lens power calculation Partial coherence interferometry optical low coherence reflectometer optical biometer Cataract surgery

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