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Biometry

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https://www.readbyqxmd.com/read/28107389/effect-of-axial-eye-length-on-retinal-vessel-parameters-in-6-to-12-year-old-malay-girls
#1
Evelyn Li Min Tai, Ling-Jun Li, Wan Hitam Wan-Hazabbah, Tien-Yin Wong, Ismail Shatriah
PURPOSE: Retinal vessel analysis is affected by both systemic and ocular factors. Malays are the major ethnicity in South East Asia. Data on the retinal microvasculature in Malays is limited, especially among children. We aim to evaluate the influence of ocular biometry on retinal vessel parameters in young Malay girls. METHODS: This was a cross-sectional, hospital-based study involving 86 Malay girls aged 6 to 12 years old in Hospital Universiti Sains Malaysia from 2015-2016...
2017: PloS One
https://www.readbyqxmd.com/read/28107088/the-national-eye-survey-of-trinidad-and-tobago-nestt-rationale-objectives-and-methodology
#2
Tasanee Braithwaite, Neville Q Verlander, Debra Bartholomew, Petra Bridgemohan, Kevin McNally, Allana Roach, Subash Sharma, Deo Singh, Konrad Pesudovs, Surujpal Teelucksingh, Christine Carrington, Samuel Ramsewak, Rupert Bourne
PURPOSE: This paper describes the rationale, study design and procedures of the National Eye Survey of Trinidad and Tobago (NESTT). The main objective of this survey is to obtain prevalence estimates of vision impairment and blindness for planning and policy development. METHODS: A population-based, cross-sectional survey was undertaken using random multistage cluster sampling, with probability-proportionate-to-size methods. Eligible participants aged 5 years and older were sampled from the non-institutional population in each of 120 cluster segments...
January 20, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28096618/evaluation-of-sperm-recovered-after-slaughter-from-cauda-epididymides-of-red-sokoto-bucks
#3
A H Abu, A I Kisani, T Ahemen
AIM: Viable spermatozoa could be recovered from the cauda epididymides for the purpose of preservation of genetic material of male animals with desirable traits and for use in reproductive biotechnology. The aim of this study was to determine the effect of storage time on testicular and epididymal biometry, sperm reserves and epididymal sperm characteristics of red Sokoto bucks post mortem. MATERIALS AND METHODS: Testes-epididymides were collected immediately after slaughter of mature red Sokoto bucks and transported in ice chest to the laboratory...
December 2016: Veterinary World
https://www.readbyqxmd.com/read/28079791/a-possible-new-approach-in-the-prediction-of-late-gestational-hypertension-the-role-of-the-fetal-aortic-intima-media-thickness
#4
Silvia Visentin, Ambrogio P Londero, Martina Camerin, Enrico Grisan, Erich Cosmi
The aim was to determine the predictive role of combined screening for late-onset gestational hypertension by fetal ultrasound measurements, third trimester uterine arteries (UtAs) Doppler imaging, and maternal history. This prospective study on singleton pregnancies was conducted at the tertiary center of Maternal and Fetal Medicine of the University of Padua during the period between January 2012 and December 2014. Ultrasound examination (fetal biometry, fetal wellbeing, maternal Doppler study, fetal abdominal aorta intima-media thickness [aIMT], and fetal kidney volumes), clinical data (mother age, prepregnancy body mass index [BMI], and parity), and pregnancy outcomes were collected...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28068394/prediction-of-small-for-gestational-age-infants-in-healthy-nulliparous-women-using-clinical-and-ultrasound-risk-factors-combined-with-early-pregnancy-biomarkers
#5
Lesley M E McCowan, John M D Thompson, Rennae S Taylor, Philip N Baker, Robyn A North, Lucilla Poston, Claire T Roberts, Nigel A B Simpson, James J Walker, Jenny Myers, Louise C Kenny
OBJECTIVE: Most small for gestational age pregnancies are unrecognised before birth, resulting in substantial avoidable perinatal mortality and morbidity. Our objective was to develop multivariable prediction models for small for gestational age combining clinical risk factors and biomarkers at 15±1 weeks' with ultrasound parameters at 20±1 weeks' gestation. METHODS: Data from 5606 participants in the Screening for Pregnancy Endpoints (SCOPE) cohort study were divided into Training (n = 3735) and Validation datasets (n = 1871)...
2017: PloS One
https://www.readbyqxmd.com/read/28063550/d%C3%A3-termination-de-l-%C3%A3-ge-gestationnel-par-%C3%A3-chographie
#6
Kimberly Butt, Ken Lim
OBJECTIF: Aider les cliniciens à attribuer un âge gestationnel en fonction des résultats de la biométrie échographique. ISSUES: Déterminer si la datation par échographie offre une évaluation plus précise de l'âge gestationnel que la datation en fonction des dernières règles avec ou sans recours à l'échographie. Offrir, aux praticiens et aux chercheurs du domaine des soins de maternité, des lignes directrices factuelles en matière d'attribution de l'âge gestationnel...
December 2016: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28063263/three-dimensional-ultrasound-first-trimester-fetal-volume-measurement-and-its-relation-to-pregnancy-outcome
#7
Haitham A Torky, Asem A Moussa, Ali M Ahmad, Osama Dief, Manar A Eldesoouky, Ahmed S El-Gayed
AIM OF WORK: To determine whether fetal volume (FV) measured by three-dimensional (3D) ultrasound was able to detect fetuses at risk of low birth weight (primary outcome) and/or preterm labor (secondary outcome). METHODS: One hundred pregnant women carrying a singleton living pregnancy who were sure of dates, and had a dating scan, with gestational age between 11 weeks and 13 weeks+6 days coming for routine first trimester nuchal translucency (NT) were examined by both two-dimensional (2D) and 3D ultrasound (Vocal System) for crown-rump length (CRL) and FV then followed up regularly every 4 weeks until 28 weeks then biweekly until 36 weeks then weekly until delivery both clinically and by ultrasound biometry...
January 7, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28052317/prenatal-prediction-of-significant-intertwin-birth-weight-discordance-using-standard-second-and-third-trimester-sonographic-parameters
#8
Mark P Hehir, Fionnuala M Breathnach, Jennifer L Hogan, Fionnuala M McAuliffe, Michael P Geary, Sean Daly, John Higgins, Alyson Hunter, John J Morrison, Gerard Burke, Rhona Mahony, Patrick Dicker, Elizabeth Tully, Fergal D Malone
INTRODUCTION: To evaluate standard ultrasound-derived fetal biometric parameters in the prediction of clinically significant intertwin birthweight discordance defined as ≥18%. MATERIAL AND METHODS: This was a secondary analysis of a prospective cohort study of 1,028 unselected twin pairs recruited over a two year period. Dichorionic twins underwent two-weekly ultrasonographic surveillance from 24 weeks' gestation, with surveillance of monochorionic twins two-weekly from 16 weeks...
January 4, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28007110/femtosecond-laser-assisted-cataract-surgery-versus-standard-phacoemulsification-cataract-surgery-study-from-the-european-registry-of-quality-outcomes-for-cataract-and-refractive-surgery
#9
Sonia Manning, Peter Barry, Ype Henry, Paul Rosen, Ulf Stenevi, David Young, Mats Lundström
PURPOSE: To compare the visual, refractive, and adverse outcomes of femtosecond laser-assisted cataract surgery and conventional phacoemulsification cataract surgery. SETTING: Cataract surgery clinics in 9 European countries and Australia (femtosecond-assisted) and 18 European countries and Australia (conventional). DESIGN: Multicenter case-control study. METHODS: Eyes having femtosecond laser-assisted cataract surgery were matched to eyes from the European Registry of Quality Outcomes for Cataract and Refractive Surgery phacoemulsification cataract surgery database for preoperative corrected distance visual acuity (CDVA), age, and preoperative risk factors...
December 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28003784/pros-and-cons-of-immediately-sequential-bilateral-cataract-surgery-isbcs
#10
REVIEW
Andrzej Grzybowski, Weronika Wasinska-Borowiec, Charles Claoué
Immediately sequential bilateral cataract surgery (ISBCS) is currently a "hot topic" in ophthalmology. There are well-documented advantages in terms of quicker visual rehabilitation and reduced costs. The risk of bilateral simultaneous endophthalmitis and bilateral blindness is now recognized to be minuscule with the advent of intracameral antibiotics and modern management of endophthalmitis. Refractive surprises are rare for normal eyes and with the use of optical biometry. Where a general anesthetic is indicated for cataract surgery, the risk of death from a second anesthetic is much higher than the risk of blindness...
October 2016: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/28002851/prenatal-ultrasonographic-diagnosis-of-cataract-in-utero-manifestations-of-cryptic-disease
#11
Eran Ashwal, Asaf Achiron, Yinon Gilboa, Michal Berkenstadt, Mordecai Rosner, Reuven Achiron
Purpose To report and review our experience with antenatal evaluation for fetuses diagnosed with congenital cataract. Materials and Methods We retrospectively identified pregnancies diagnosed with fetal cataract during antenatal ultrasound. Evaluation of fetal eyes included intraocular anatomy and biometry. Data on fetal malformations, serology and fetal karyotype were collected. Results 8 cases, identified over the course of 10 years, were reviewed. Week 15 was the mean time for diagnosis (range 11 - 34)...
December 21, 2016: Ultraschall in der Medizin
https://www.readbyqxmd.com/read/27993483/lens-power-axial-length-to-corneal-radius-ratio-and-association-with-diabetic-retinopathy-in-the-adult-population-with%C3%A2-type-2-diabetes
#12
Jiangnan He, Xian Xu, Jianfeng Zhu, Bijun Zhu, Bo Zhang, Lina Lu, Xiangui He, Xuelin Bai, Xun Xu, Haidong Zou
PURPOSE: To calculate crystalline lens power and to determine the relationship between ocular biometry and diabetic retinopathy (DR) in an adult population with type 2 diabetes mellitus (T2DM). DESIGN: Cross-sectional, population-based study. PARTICIPANTS: Patients with T2DM from the Beixinjing community, Changning district, Shanghai. METHODS: Random clustering sampling was used to identify adults with T2DM in the Beixinjing community...
December 16, 2016: Ophthalmology
https://www.readbyqxmd.com/read/27992967/role-of-fetal-mri-in-the-evaluation-of-isolated-and-non-isolated-corpus-callosum-dysgenesis-results-of-a-cross-sectional-study
#13
Lucia Manganaro, Silvia Bernardo, Corrado De Vito, Amanda Antonelli, Enrica Marchionni, Valeria Vinci, Matteo Saldari, Letizia Di Meglio, Antonella Giancotti, Evelina Silvestri, Carlo Catalano, Antonio Pizzuti
PURPOSE: To characterize isolated and non-isolated forms of Corpus Callosum Dysgenesis (CCD) at Fetal MRI and to identify early predictors of associated anomalies. METHODS: We retrospectively analyzed 104 fetuses with CCD undergoing MRI between 2006 and 2016. Corpus Callosum (CC), cavum septi pellucidi, biometry, presence of ventriculomegaly, gyration anomalies, cranio-encephalic abnormalities and body malformations were evaluated. Results of genetic tests were also recorded...
December 19, 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27990622/refractive-outcome-of-combined-phacoemulsification-and-endoscopic-cyclophotocoagulation
#14
S Kang, S Luk, H Han, M F Cordeiro, F Ahmed, P Bloom, L Crawley
PURPOSE: To compare the refractive outcome of eyes that underwent phacoemulsification combined with endoscopic cyclophotocoagulation (phaco-ECP) with the eyes that underwent phacoemulsification alone. METHODS: A retrospective case series review of 103 consecutive eyes that underwent phaco-ECP and 62 eyes that underwent phacoemulsification between January 2006 and August 2012 was conducted. Post-operative refractive outcomes were obtained by subjective refraction or autorefraction...
December 19, 2016: International Ophthalmology
https://www.readbyqxmd.com/read/27977014/biometry-of-the-corpus-callosum-assessed-by-3d-ultrasound-and-its-correlation-to-neurodevelopmental-outcome-in-very-low-birth-weight-infants
#15
K Klebermass-Schrehof, S Aumüller, K Goeral, K Vergesslich-Rothschild, R Fuiko, S Brandstetter, A Berger, B Jilma, N Haiden
OBJECTIVE: Several studies have shown a relation between the size of corpus callosum (CC) and outcome in preterm infants. Three-dimensional ultrasound (3D-US) offers new perspectives in cerebral imaging. To establish reference values for biometry of the CC in very low birth weight infants and to correlate these measurements to neurodevelopmental outcome at 5 years of age. STUDY DESIGN: Forty-three preterm infants with a gestational age <32 weeks were included...
December 15, 2016: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/27960581/distribution-of-ocular-component-measures-and-refraction-in-brazilian-school-children
#16
Rodrigo Pessoa Cavalcanti Lira, Carlos Eduardo Leite Arieta, Thaís Helena Moreira Passos, Diana Maziero, Gustavo Lima do Valle Astur, Ítalo Fernandes do Espírito Santo, Ana Cláudia Bertolani, Luis Fernando Pozzi, Rosane Silvestre de Castro, Álvaro Antônio Bandeira Ferraz
PURPOSE: To describe ocular component values and refraction in 6-17-year-old school children in Campinas, Brazil. METHODS: To obtain a representative sample, a total of 1100 6-17-year-old public school students in Campinas, Brazil, were randomly selected and divided into groups according to median ages 6 years (range 5-7 years), 10 years (range 9-11 years), 14 years (range 13-15 years), and 17 years (range 16-18 years). Cycloplegic autorefraction and ocular biometry were performed on each child...
February 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/27956289/pterygium-size-and-effect-on-intraocular-lens-power-calculation
#17
Mustafa Koc, Mehmet Murat Uzel, Emre Aydemir, Fuat Yavrum, Pinar Kosekahya, Pelin Yılmazbaş
PURPOSE: To evaluate the effects of pterygium on biometry measurements and the relationship between these effects and pterygium size. SETTING: Ulucanlar Eye Hospital, Ankara, Turkey. DESIGN: Prospective comparative study. METHODS: Patients who had unilateral primary pterygium excision were included in the study group. Anterior segment photographed images were taken of eyes with pterygia to calculate the pterygium length and area using the ImageJ program...
November 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/27939559/posterior-vault-distance-of-ciliary-sulcus-implanted-three-piece-intraocular-lenses-according-to-ciliary-sulcus-diameter
#18
Youngsub Eom, Ho Sik Hwang, Jin Young Hwang, Jong Suk Song, Hyo Myung Kim
PURPOSE: To investigate the correlation among preoperative biometry data, postoperative ciliary sulcus diameter, posterior vault distance, and effective lens position of ciliary sulcus-implanted intraocular lenses (IOLs). DESIGN: Retrospective interventional case series METHODS: Twenty-six eyes of 26 patients who underwent phacoemulsification with implantation of a ZA9003 IOL (Abbott Medical Optics Inc., Santa Ana, CA, USA) in the ciliary sulcus. We analyzed correlations among preoperative biometry data and ultrasound biomicroscopy measurements, ciliary sulcus diameter, posterior vault distance, and effective lens position...
December 6, 2016: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/27921094/fetal-cerebellar-vermis-circumference-measured-by-2-dimensional-ultrasound-scan-reference-range-feasibility-and-reproducibility
#19
M Spinelli, C Sica, L D Meglio, D Bolla, L Raio, D Surbek
Purpose: To provide 2-dimensional ultrasonographic (2D-US) normograms of cerebellar vermis biometry, as well as to evaluate the feasibility and the reproducibility of these measurements in clinical practice. Materials and Methods: A prospective cross-sectional study of 328 normal singleton pregnancies between 18 and 33 weeks of gestation. Measurements of the fetal cerebellar vermis circumference (VC) in the mid-sagittal plane were performed by both a senior and a junior operator using 2D-US. VC as a function of gestational age (GA) was expressed by regression equations...
November 2016: Ultrasound International Open
https://www.readbyqxmd.com/read/27900852/association-of-ultrasound-based-measures-of-fetal-body-composition-with-newborn-adiposity
#20
S Ikenoue, F Waffarn, K Sumiyoshi, M Ohashi, C Ikenoue, C Buss, D L Gillen, H N Simhan, S Entringer, P D Wadhwa
BACKGROUND: Newborns exhibit substantial variation in gestational age-adjusted and sex-adjusted fat mass proportion. The antecedent characteristics of fetal body composition that are associated with newborn fat mass proportion are poorly understood. OBJECTIVE: The aim of this study was to determine whether a composite measure of fetal fat mass is prospectively associated with newborn adiposity. METHODS: In a longitudinal study of 109 low-risk pregnancies, fetal ultrasonography was performed at approximately 12, 20 and 30 weeks gestation...
November 29, 2016: Pediatric Obesity
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