Lens Opacities Classification System III: cataract grading variability between junior and senior staff at a Singapore hospital. 2008

Anna C Tan, and Seng Chee Loon, and Harold Choi, and Lennard Thean
Ophthalmology Department, National University Hospital, Singapore, Singapore. anna.tan.c.s@singhealth.com.sg

OBJECTIVE To test the reliability of the Lens Opacities Classification System III (LOCS III) cataract grading between observers at different levels of ophthalmology experience. METHODS Ophthalmology Department, National University Hospital, Singapore, Singapore. METHODS In this comparative study, a non-ophthalmology trainee, a basic ophthalmology trainee, and an ophthalmology consultant graded cataracts in 28 patients preoperatively. The observers had a meeting to discuss their interpretations of the LOCS III manual to standardize the grading system and then graded 37 additional patients. RESULTS There was a statistically significant increase in inter-observer agreement in all 3 LOCS III categories after standardization of the LOCS III system. The kappa values after standardization fell in the moderate (0.41 to 0.60) to substantial (0.61 to 0.80) range. There was no statistically significant relationship between the observer's experience and the kappa values. CONCLUSIONS There was an increase in inter-observer agreement in all categories after standardization between operators.

UI MeSH Term Description Entries
D007907 Lens Nucleus, Crystalline The core of the crystalline lens, surrounded by the cortex. Crystalline Lens Nucleus,Nucleus, Crystalline Lens
D008505 Medical Staff, Hospital Professional medical personnel approved to provide care to patients in a hospital. Attending Physicians, Hospital,Hospital Medical Staff,Physicians, Junior,Registrars, Hospital,Attending Physician, Hospital,Hospital Attending Physician,Hospital Attending Physicians,Hospital Medical Staffs,Medical Staffs, Hospital,Hospital Registrar,Hospital Registrars,Junior Physician,Junior Physicians,Physician, Junior,Registrar, Hospital,Staff, Hospital Medical,Staffs, Hospital Medical
D009885 Ophthalmology A surgical specialty concerned with the structure and function of the eye and the medical and surgical treatment of its defects and diseases. Ocular Surgery,Ocular Surgeries,Surgery, Ocular
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
D002983 Clinical Competence The capability to perform acceptably those duties directly related to patient care. Clinical Skills,Competence, Clinical,Clinical Competency,Clinical Skill,Competency, Clinical,Skill, Clinical,Skills, Clinical,Clinical Competencies,Competencies, Clinical
D006785 Hospitals, University Hospitals maintained by a university for the teaching of medical students, postgraduate training programs, and clinical research. University Hospitals
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012846 Singapore Country of islands in Southeastern Asia, islands between Malaysia and Indonesia. The capital is Singapore.
D015203 Reproducibility of Results The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results. Reliability and Validity,Reliability of Result,Reproducibility Of Result,Reproducibility of Finding,Validity of Result,Validity of Results,Face Validity,Reliability (Epidemiology),Reliability of Results,Reproducibility of Findings,Test-Retest Reliability,Validity (Epidemiology),Finding Reproducibilities,Finding Reproducibility,Of Result, Reproducibility,Of Results, Reproducibility,Reliabilities, Test-Retest,Reliability, Test-Retest,Result Reliabilities,Result Reliability,Result Validities,Result Validity,Result, Reproducibility Of,Results, Reproducibility Of,Test Retest Reliability,Validity and Reliability,Validity, Face
D015588 Observer Variation The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material). Bias, Observer,Interobserver Variation,Intraobserver Variation,Observer Bias,Inter-Observer Variability,Inter-Observer Variation,Interobserver Variability,Intra-Observer Variability,Intra-Observer Variation,Intraobserver Variability,Inter Observer Variability,Inter Observer Variation,Inter-Observer Variabilities,Inter-Observer Variations,Interobserver Variabilities,Interobserver Variations,Intra Observer Variability,Intra Observer Variation,Intra-Observer Variabilities,Intra-Observer Variations,Intraobserver Variabilities,Intraobserver Variations,Observer Variations,Variabilities, Inter-Observer,Variabilities, Interobserver,Variabilities, Intra-Observer,Variabilities, Intraobserver,Variability, Inter-Observer,Variability, Interobserver,Variability, Intra-Observer,Variability, Intraobserver,Variation, Inter-Observer,Variation, Interobserver,Variation, Intra-Observer,Variation, Intraobserver,Variation, Observer,Variations, Inter-Observer,Variations, Interobserver,Variations, Intra-Observer,Variations, Intraobserver,Variations, Observer

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