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https://www.readbyqxmd.com/read/29163989/axial-length-and-ocular-development-of-premature-infants-without-rop
#1
Yi Zha, Guangdong Zhu, Jinfei Zhuang, Haihua Zheng, Jianqiu Cai, Wangqiang Feng
Purpose: To investigate the ocular parameters of premature infants without ROP at gestational age (GA) more than 28 weeks and their relationship with growth parameters. Methods: 76 preterm infants without ROP and 65 term infants were involved to undergo portable slit lamp, RetCam3, ultrasonic A-scan biometry, and cycloplegic streak examination at their 40 weeks' postconceptional ages (PCA). Ocular parameters of infants' right eye and growth parameters were used for analysis...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29161699/patterns-of-detection-of-fetal-posterior-fossa-anomalies-analysis-of-81-cases-in-the-second-half-of-gestation
#2
Stéphanie Friszer, Ferdinand Dhombres, Eléonore Blondiaux, Marie-Laure Moutard, Catherine Garel, Jean-Marie Jouannic
OBJECTIVE: To establish which characteristics of fetal ultrasound screening lead to the diagnosis of posterior fossa (PF) anomalies. METHODS: A total of 81 fetuses with PF anomalies diagnosed after dedicated neuroimaging between July 1, 2007, and January 1, 2013, were included. The ultrasound characteristics of the fetal cerebellum categorized according to an anatomical approach to the PF, associated fetal anomalies, gestational age at diagnosis, and the potential benefits from systematic measurement of the transverse cerebellar diameter (TCD) were analyzed...
November 21, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/29153660/fetal-size-and-growth-velocity-in-chronic-hypertension
#3
T Frusca, S Parolini, A Dall'Asta, W A Hassan, A Vitulo, A Gillett, D Pasupathy, C C Lees
OBJECTIVE: To investigate longitudinal fetal growth and growth velocity for commonly measured biometric parameters in women with chronic hypertension. METHODS: Two centre retrospective European study of women with chronic hypertension ascertained at pregnancy booking. Ultrasound measurements of head circumference (HC), abdominal circumference (AC) and femur length (FL) were used to derive longitudinal fetal growth charts derived using functional linear discriminant analysis (FLDA)...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29151682/anterior-segment-morphology-in-primary-angle-closure-glaucoma-using-ultrasound-biomicroscopy
#4
Tarannum Mansoori, Nagalla Balakrishna
Aim: To evaluate the configuration of the anterior chamber angle quantitatively and study the morphological changes in the eye with ultrasound biomicroscopy (UBM) in primary angle closure glaucoma (PACG) patients after laser peripheral iridotomy (LPI). Materials and methods: A total of 185 eyes of 185 PACG patients post-LPI and 126 eyes of 126 normal subjects were included in this prospective study. All subjects underwent complete ophthalmic evaluation, A-scan biometry, and UBM...
September 2017: Journal of Current Glaucoma Practice
https://www.readbyqxmd.com/read/29131913/unilateral-congenital-cataract-clinical-profile-and-presentation
#5
Sudarshan Khokhar, Cijin P Jose, Ramanjit Sihota, Neha Midha
PURPOSE: To study the clinical profile and presentation of children with unilateral cataract. METHODS: In this hospital-based, observational, cross-sectional study, patients 15 years of age or younger who presented with unilateral cataract were recruited. Cases of cataract secondary to causes such as trauma or uveitis were excluded. Age at detection and presentation, distance from the treatment center, presenting complaints, cataract morphology, and biometry were noted for each case...
November 11, 2017: Journal of Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/29131702/postoperative-refractive-errors-following-pediatric-cataract-extraction-with-intraocular-lens-implantation
#6
Maanasa Indaram, Deborah K VanderVeen
PURPOSE: Advances in surgical techniques allow implantation of intraocular lenses (IOL) with cataract extraction, even in young children. However, there are several challenges unique to the pediatric population that result in greater degrees of postoperative refractive error compared to adults. METHODS: Literature review of the techniques and outcomes of pediatric cataract surgery with IOL implantation. RESULTS: Pediatric cataract surgery is associated with several sources of postoperative refractive error...
November 13, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29108394/comparative-study-of-3-exophthalmometers-and-computed-tomographic-biometry
#7
Juliette Delmas, Jean-Marie Loustau, Sylvain Martin, Loïc Bourmault, Jean-Paul Adenis, Pierre-Yves Robert
PURPOSE: Accurate and reproducible exophthalmometry is mandatory to diagnose and follow-up orbital patients, especially in Graves disease. However, many variations are described among the different commercially available exophthalmometers. METHODS: Sixty patients, who underwent a cerebral computed tomography (CT) scan, were included. External prebicanthal segments (EPBCS) for right and left eyes (RE and LE), interorbital distance, and globe axial length were recorded by a first observer (O1), more experienced than a second (O2)...
November 2, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/29108135/regimens-of-ultrasound-surveillance-for-twin-pregnancies-for-improving-outcomes
#8
REVIEW
Jane G Woolcock, Rosalie M Grivell, Jodie M Dodd
BACKGROUND: Increased ultrasound surveillance of twin pregnancies has become accepted practice due to the higher risk of complications. There is no current consensus however as to the method and frequency of ultrasound monitoring that constitutes optimal care. OBJECTIVES: To systematically review the effects of different types and frequency of ultrasound surveillance for women with a twin pregnancy on neonatal, fetal and maternal outcomes. SEARCH METHODS: We searched Cochrane Pregnancy and Childbirth's Trials Register, ClinicalTrials...
November 7, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29094166/the-relationship-between-high-order-aberration-and-anterior-ocular-biometry-during-accommodation-in-young-healthy-adults
#9
Bilian Ke, Xinjie Mao, Hong Jiang, Jichang He, Che Liu, Min Li, Ying Yuan, Jianhua Wang
Purpose: This study investigated the anterior ocular anatomic origin of high-order aberration (HOA) components using optical coherence tomography and a Shack-Hartmann wavefront sensor. Methods: A customized system was built to simultaneously capture images of ocular wavefront aberrations and anterior ocular biometry. Relaxed, 2-diopter (D) and 4-D accommodative states were repeatedly measured in 30 young subjects. Custom software was used to correct optical distortions and measure biometric parameters from the images...
November 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29091634/ray-tracing-in-ellipsoidal-reflectors-for-optical-biometry-of-media
#10
M A Bezuglyi, N V Bezuglaya, I V Helich
In this paper, an analytical basis of ray tracing for optical biometry of media by ellipsoidal reflectors was developed. A ray-tracing algorithm was created, which involves determining the point of interaction of the incident beam with the ellipsoidal reflector, calculating the direction of the reflected beam, and determining the intersection point of the reflected ray with the second ellipsoid focal plane, taking into account the statistical weight of photons. For imaging in the optical biometry of media by ellipsoidal reflectors, the results of a real experiment and a Monte Carlo simulation for chicken muscle tissue samples of different thicknesses for the wavelength of 632...
October 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/29090047/accuracy-of-various-intraocular-lens-power-calculation-formulas-in-steep-corneas
#11
Amir Faramarzi, Ali Aghajani, Leila Ghiasian
PURPOSE: To compare the accuracy of four different intraocular lens (IOL) power calculation formulas for eyes with mean keratometry values greater than 46 diopters (D). METHODS: Forty five eyes from 45 patients who were candidates for senile cataract surgery with mean keratometry values greater than 46 D were included. Calculation of the IOL power was performed by the Lenstar. The implanted IOL in all cases was Acrysof SA60AT. The average absolute value of the differences between the actual and predicted spherical equivalent (SE) of the postoperative refractive error (mean absolute error: MAE) was calculated using 4 formulas (Haigis, Holladay 1, Hoffer Q, and SRK/T) with optical IOL constants from the User Group for Laser Interference Biometry constants...
October 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/29067532/biometric-evaluation-of-myopic-eyes-without-posterior-staphyloma-disproportionate-ocular-growth
#12
Sudarshan Khokhar, Brijesh Takkar, Esha Agarwal, Nripen Gaur, Raghav Ravani, Pradeep Venkatesh
PURPOSE: To evaluate changes in the anterior segment of myopic eyes and assess anterior biometry as a function of axial length (AL). DESIGN: Retrospective investigational study. PARTICIPANTS: Patients evaluated for phakic intraocular lens surgery at a tertiary eye care centre. METHODS: Patients with corrected visual acuity > 20/40 and AL > 24.5 mm were included in the study. Posterior staphyloma and maculopathy were ruled out in all the patients, and 176 eyes were included for analysis...
October 24, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/29060813/eeg-based-biometry-using-steady-state-visual-evoked-potentials
#13
Owen Falzon, Rosanne Zerafa, Tracey Camilleri, Kenneth P Camilleri
The use of brain signals for person recognition has in recent years attracted considerable interest because of the increased security and privacy these can offer when compared to conventional biometric measures. The main challenge lies in extracting features from the EEG signals that are sufficiently distinct across individuals while also being sufficiently consistent across multiple recording sessions. A range of EEG phenomena including eyes open and eyes closed activity, visual evoked potentials (VEPs) through image presentation, and other mental tasks have been studied for their use in biometry...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29043709/estimation-of-day-specific-probabilities-of-conception-during-natural-cycle-in-women-from-babylon
#14
Hanan Al-Taee, Ban J Edan
Background: Identifying predictors of the probabilities of conception related to the timing and frequency of intercourse in the menstrual cycle is essential for couples attempting pregnancy, users of natural family planning methods, and clinicians diagnosing for possible causes of infertility. The aim of this study is to estimate the days in which the likelihood of conception happened by using first trimester ultrasound fetal biometry in natural cycles and spontaneous pregnancy, and to explore some factors that may affect them...
January 2018: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/29033022/-fetal-biometry-it-is-time-for-change
#15
EDITORIAL
G Haddad
No abstract text is available yet for this article.
October 2017: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/29030147/-report-from-the-cfef-seminar-on-fetal-biometry-june-2017
#16
Collège Français d'échographie Fœtale Cfef
This article reports the conclusions and recommendations resulting from the seminar organized in Paris on June 15, 2017 by the scientific committee of the French College of Fetal Ultrasound (CFEF). The purpose of this meeting was to audit the practices in screening for SGA and IUGR fetuses in France and to discuss ways to improve ultrasound screening. A review of charts, references, standards and common practices was performed. The potential new biometric tools applicable in France were reviewed and analyzed...
October 10, 2017: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/29026765/screening-antenatal-anxiety-predicting-its-effect-on-fetal-growth
#17
Kaushik Sarkar, Goutam Das, Ranadip Chowdhury, Bhaskar Shahbabu, Ishita Sarkar, Santu Maiti, Aparajita Dasgupta
CONTEXT: Maternal anxiety has an association with low birth weight. However, studies are scarce to determine any association between maternal anxiety and fetal growth. AIMS: This study aims to determine the effect of maternal anxiety on fetal growth, measured by gestational age-dependent increase in fetal abdominal circumference (AC). The secondary objective is to determine the effect of maternal anxiety on other fetal parameters (biparietal diameter [BPD], head circumference [HC], femur length [FL])...
January 2017: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/28991611/effect-of-fixation-stability-during-biometry-measurements-on-refractive-prediction-accuracy-in-highly-myopic-eyes
#18
Xiangjia Zhu, Wenwen He, Yu Du, Yi Lu
PURPOSE: To assess the effect of preoperative biometry fixation stability on postoperative refractive errors in highly myopic cataractous eyes. SETTING: Eye and ENT Hospital of Fudan University, Shanghai, China. DESIGN: Prospective cohort study. METHODS: Eyes of highly myopic patients and emmetropic controls were included. Routine ophthalmologic examinations and measurement of fixation stability in the 63% and 95% bivariate contour ellipse areas (BCEAs) were conducted preoperatively...
September 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28990827/ural-eye-and-medical-study-description-of-study-design-and-methodology
#19
Mukharram Bikbov, Rinat R Fayzrakhmanov, Gyulli Kazakbaeva, Jost B Jonas
PURPOSE: Since there is a scarcity on population-based health information available for Russia, we conducted this project to assess the prevalence of major ocular and systemic disorders and their associated risk factors. METHODS: A population-based cross-sectional study (Ural Eye and Medical Study (UEMS)) was performed in Bashkortostan 1300 km east of Moscow. The sampling frame consisted of all inhabitants aged over 40 years and living in an urban study area in the capital city Ufa and a rural region at 65 km outside of Ufa...
October 9, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28978539/maternal-weight-gain-and-associations-with-longitudinal-fetal-growth-in-dichorionic-twin-pregnancies-a-prospective-cohort-study
#20
Stefanie N Hinkle, Mary L Hediger, Sungduk Kim, Paul S Albert, William Grobman, Roger B Newman, Deborah A Wing, Jagteshwar Grewal, Cuilin Zhang, Germaine M Buck Louis, Katherine L Grantz
Background: Maternal metabolic demands are much greater with twin gestations; however, there are no accepted recommendations for maternal weight gain in twin pregnancies.Objective: We assessed the association of maternal weight gain and fetal growth in dichorionic twins throughout pregnancy.Design: This was a prospective US cohort study (n = 143, 2012-2013) of dichorionic twin pregnancies with known birth outcomes followed from enrollment (11-13 wk) and for ≤6 research visits throughout gestation. Maternal prepregnancy weight was self-reported, and current weight was measured at each research visit and abstracted from prenatal records...
October 4, 2017: American Journal of Clinical Nutrition
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