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[Comparison of swept source anterior segment optical coherence tomography and ultrasound biomicroscopy in measurement of anterior chamber depth and anterior chamber angle data in age-related cataract patients]. 2018

L Shen, and X N Wang, and D J Li, and Z Y Wang, and W Chen, and Q Zhao, and Y F Li, and R Cui, and W L Yang
Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Lab., Beijing 100730, China.

Objective: To explore the difference and agreement in the measurement of anterior chamber depth (ACD) and anterior chamber angle data in age-related cataract patients between swept source anterior segment optical coherence tomography (SS-AS-OCT) and ultrasound biomicroscopy (UBM). Methods: A prospective study. Forty-five eyes from 45 age-related cataract patients were selected at Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University from November to December 2016. There were 23 males and 22 females aged (51±19) years. SS-AS-OCT and UBM were used to measure the ACD, angle opening distance (AOD 500) and trabecular-iris angle (TIA 500). The paired samples t-test and Pearson linear correlation were used for statistical analysis, and the Bland-Altman analysis was used to evaluate the measurement consistency of the two tools. Results: The ACD measured by SS-AS-OCT and UBM was (2.750±0.544) mm and (2.775±0.531) mm, respectively, the difference was statistically significant (t=2.109, P=0.040), and the measurement results were positively correlated (r=0.989, P<0.001). In the nasal, temporal, upper and lower positions, the AOD 500 and TIA 500 values measured by SS-AS-OCT and UBM had a significant difference [AOD 500: (0.451±0.201) mm vs.(0.421±0.194) mm, (0.499±0.229) mm vs. (0.465±0.207) mm, (0.390±0.215) mm vs. (0.355±0.208) mm, (0.441±0.226) mm vs. (0.423±0.215) mm, t=4.262, 4.350, 5.355, 4.415; TIA 500: 39.587°±14.698°vs. 36.944°±13.790°, 42.149°±14.138°vs. 40.289°±13.041°, 36.482°±15.887°vs. 35.600°±15.215°, 38.504°±14.805°vs. 36.818°±14.931°, t=5.131, 4.658, 4.174, 5.731; all P<0.001] and a significant linear correlation (AOD 500: r=0.971, 0.975, 0.979, 0.973; TIA 500: r=0.972, 0.957, 0.956, 0.970; all P<0.001). The Bland-Altman method showed that the two modalities had comparable results for the ACD, AOD 500 and TIA 500 (2.22%-6.67% of the measured value outside the 95% consistency boundaries). Conclusion: SS-OCT and UBM show a good agreement in the measurement of ACD and anterior chamber angle data in age-related cataract patients, though there is difference between them in measurement results. (Chin J Ophthalmol, 2018, 54: 678-682).

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011446 Prospective Studies Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group. Prospective Study,Studies, Prospective,Study, Prospective
D002386 Cataract Partial or complete opacity on or in the lens or capsule of one or both eyes, impairing vision or causing blindness. The many kinds of cataract are classified by their morphology (size, shape, location) or etiology (cause and time of occurrence). (Dorland, 27th ed) Cataract, Membranous,Lens Opacities,Pseudoaphakia,Cataracts,Cataracts, Membranous,Lens Opacity,Membranous Cataract,Membranous Cataracts,Opacities, Lens,Opacity, Lens,Pseudoaphakias
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000867 Anterior Chamber The space in the eye, filled with aqueous humor, bounded anteriorly by the cornea and a small portion of the sclera and posteriorly by a small portion of the ciliary body, the iris, and that part of the crystalline lens which presents through the pupil. (Cline et al., Dictionary of Visual Science, 4th ed, p109) Anterior Chambers,Chamber, Anterior,Chambers, Anterior
D033401 Microscopy, Acoustic A scientific tool based on ULTRASONOGRAPHY and used not only for the observation of microstructure in metalwork but also in living tissue. In biomedical application, the acoustic propagation speed in normal and abnormal tissues can be quantified to distinguish their tissue elasticity and other properties. Acoustic Microscopy,Microscopy, Scanning Acoustic,Scanning Acoustic Microscopy,Ultrasonic Biomicroscopy,Ultrasonographic Biomicroscopy,Ultrasound Biomicroscopy,Acoustic Microscopies,Acoustic Microscopies, Scanning,Acoustic Microscopy, Scanning,Biomicroscopies, Ultrasonic,Biomicroscopies, Ultrasonographic,Biomicroscopies, Ultrasound,Biomicroscopy, Ultrasonic,Biomicroscopy, Ultrasonographic,Biomicroscopy, Ultrasound,Microscopies, Acoustic,Microscopies, Scanning Acoustic,Scanning Acoustic Microscopies,Ultrasonic Biomicroscopies,Ultrasonographic Biomicroscopies,Ultrasound Biomicroscopies

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