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International Ophthalmology Clinics 2017
Review
Topics: Aberrometry; Biometry; Corneal Topography; Diagnostic Techniques, Ophthalmological; Humans; Interferometry; Light; Tomography, Optical Coherence
PubMed: 28590285
DOI: 10.1097/IIO.0000000000000175 -
Current Opinion in Ophthalmology Jan 2012Obtaining precise postoperative target refraction is of utmost importance in today's modern cataract and refractive surgery. Given the growing number of patients... (Review)
Review
PURPOSE OF REVIEW
Obtaining precise postoperative target refraction is of utmost importance in today's modern cataract and refractive surgery. Given the growing number of patients undergoing premium intraocular lens (IOL) implantations, patient expectation continues to rise. In order to meet heightened patient expectations, it is crucial to pay utmost attention to patient selection, accurate keratometry and biometry readings, as well as to the application of correct IOL power formula with optimized lens constants. This article reviews recent advances in the field of clinical biometry and IOL power calculations.
RECENT FINDINGS
Recently developed low-coherence reflectometry optical biometry is comparable to older ultrasonic biometric and keratometric techniques. In addition, the new IOLMaster software upgrade has improved reproducibility and enhanced signal acquisition. Further, the modern lens power formulas currently determine the effective lens position and the shape of the intraocular lens power prediction curve more accurately.
SUMMARY
In order to reach target refraction, precise biometric measurements are imperative. Understanding the strengths and limitations of the currently available biometry devices allows prevention of high variability and inaccuracy, ultimately determining the refractive outcomes.
Topics: Biometry; Cornea; Humans; Lenses, Intraocular
PubMed: 22081032
DOI: 10.1097/ICU.0b013e32834cd63e -
Studies in History and Philosophy of... Oct 2021Historiographical analyses of the development of genetics in the first decade of the 20th century have been to a great extent framed in the context of the...
Historiographical analyses of the development of genetics in the first decade of the 20th century have been to a great extent framed in the context of the Mendelian-Biometrician controversy. Much has been discussed on the nature, origin, development, and legacy of the controversy. However, such a framework is becoming less useful and fruitful. This paper challenges the traditional historiography framed by the Mendelian-Biometrician distinction. It argues that the Mendelian-Biometrician distinction fails to reflect the theoretical and methodological diversity in the controversy. It also argues that the Mendelian-Biometrician distinction is not helpful to make a full understanding of the development of genetics in the first decade of the twentieth century.
Topics: Biometry; Fruit; Genetics; History, 19th Century; History, 20th Century; Reading Frames
PubMed: 34455258
DOI: 10.1016/j.shpsa.2021.08.014 -
Developments in Ophthalmology 2002
Review
Topics: Biometry; Diagnostic Techniques, Ophthalmological; Eye; Humans; Interferometry; Light; Ultrasonics; Weights and Measures
PubMed: 12520608
DOI: 10.1159/000060791 -
Biometrics Sep 1948
Topics: Biometry
PubMed: 18098453
DOI: No ID Found -
Gynecologie, Obstetrique, Fertilite &... Oct 2017
Topics: Biometry; Fetal Weight; Fetus; France; Humans; Ultrasonography, Prenatal
PubMed: 29033022
DOI: 10.1016/j.gofs.2017.08.011 -
Archives of Ophthalmology (Chicago,... Dec 1987
Topics: Biometry; Humans; Lenses, Intraocular; Refractive Errors
PubMed: 3689182
DOI: 10.1001/archopht.1987.01060120024006 -
Methods of Information in Medicine 2014
Topics: Biometry; Epidemiology; Forecasting; Germany; Humans; Medical Informatics
PubMed: 25109423
DOI: 10.3414/ME14-10-0005 -
American Journal of Public Health Aug 2008
Topics: Biometry; Diffusion of Innovation; Epidemiologic Methods; Humans; Public Health Practice; Research Design
PubMed: 18612137
DOI: 10.2105/AJPH.2008.142802 -
Sensors (Basel, Switzerland) Aug 2021This paper presents the first photoplethysmographic (PPG) signal dynamic-based biometric authentication system with a Siamese convolutional neural network (CNN). Our...
This paper presents the first photoplethysmographic (PPG) signal dynamic-based biometric authentication system with a Siamese convolutional neural network (CNN). Our method extracts the PPG signal's biometric characteristics from its diffusive dynamics, characterized by geometric patterns in the (p,q)-planes specific to the 0-1 test. PPG signal diffusive dynamics are strongly dependent on the vascular bed's biostructure, unique to each individual. The dynamic characteristics of the PPG signal are more stable over time than its morphological features, particularly in the presence of psychosomatic conditions. Besides its robustness, our biometric method is anti-spoofing, given the complex nature of the blood network. Our proposal trains using a national research study database with 40 real-world PPG signals measured with commercial equipment. Biometric system results for input data, raw and preprocessed, are studied and compared with eight primary biometric methods related to PPG, achieving the best equal error rate (ERR) and processing times with a single attempt, among all of them.
Topics: Biometric Identification; Biometry; Databases, Factual; Diffusion; Neural Networks, Computer
PubMed: 34451105
DOI: 10.3390/s21165661