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Yanin Suwan, Sunpong Jiamsawad, Wasu Supakontanasan, Chaiwat Teekhasaenee
BACKGROUND: To evaluate the mechanisms of acute angle-closure (AAC) other than the pupillary block using ultrasound biomicroscopy DESIGN: Retrospective chart review. PARTICIPANTS: All patients who were diagnosed with AAC in Ramathibodi Hospital, Bangkok, Thailand, between June 2011 and February 2015 were enrolled. METHODS: 72 patients who were diagnosed with AAC underwent a detailed ocular examination. The diagnosed mechanism of AAC was confirmed by UBM and ocular biometry...
October 22, 2016: Clinical & Experimental Ophthalmology
Manuel Garza-Leon, Hugo A Fuentes-de la Fuente, Ana V García-Treviño
PURPOSE: The purpose of the study was to assess the reproducibility of ocular biometry using the IOLMaster-700 in a healthy population. METHODS: This is a prospective, cross-sectional, observational reproducibility study. Ocular biometry was performed three times on each of 45 studied eyes. Flattest meridian (Kf) and the steepest meridian (Ks), central corneal thickness, axial length, anterior chamber depth, aqueous depth, lens thickness, and white-to-white distances were recorded...
October 21, 2016: International Ophthalmology
Xiaohong Liu, Hehua Ye, Qi Zhang, Xuan Cai, Wenjing Yu, Siyi Yu, Tianyu Wang, Wuyi Lu, Xiang Li, Peiquan Zhao
BACKGROUND: Myopia subjects usually have long axial lengths and are predisposed to deep anterior chamber depths and open angles. Jiangning eye study is a randomized, population based study in Shanghai to determine whether myopia has an effect on the prevalence of occludable angles. METHODS: A total of 2478 residents aged 50 years and over were randomly selected, and 2044 (82.5%) individuals of them participated in ophthalmic examinations between November 2012 and February 2013...
2016: PloS One
Nir Sorkin, Amir Rosenblatt, Irina S Barequet
PURPOSE: To compare measurements of axial length (AL), anterior chamber depth (ACD), keratometry (K), and the refractive predictability of the Aladdin and IOLMaster biometry devices in cataract surgery patients. METHODS: A retrospective observational study of eyes undergoing cataract surgery. Data were retrieved on AL, ACD, and K measurements obtained by the Aladdin and the IOLMaster. Furthermore, the postoperative refractive prediction errors were compared between the devices...
October 12, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Emilio A Herrera, Francisca Cifuentes-Zúñiga, Esteban Figueroa, Cristian Villanueva, Cherie Hernández, René Alegría, Viviana Arroyo, Estefania Peñaloza, Marcelo Farías, Ricardo Uauy, Paola Casanello, Bernardo J Krause
In humans, intrauterine growth restriction (IUGR) is associated with vascular dysfunction, oxidative stress and signs of endothelial programming in umbilical vessels. We aimed to determine the effects of maternal antioxidant treatment with N-acetyl cysteine (NAC) on fetal endothelial function and eNOS programming in IUGR guinea pigs. IUGR was induced by implanting ameroid constrictors on uterine arteries of pregnant guinea pigs at mid gestation, receiving half of the sows NAC in the drinking water (from day 34 until term)...
October 14, 2016: Journal of Physiology
Xiao-Hua Wu, Kang-Wei Qian, Guo-Zhong Xu, Yun-Yun Li, Yuan-Yuan Ma, Furong Huang, Yan-Qing Wang, Xiangtian Zhou, Jia Qu, Xiong-Li Yang, Yong-Mei Zhong, Shi-Jun Weng
Purpose: Although retinal dopamine (DA) has been long implicated in myopia development, current studies demonstrate that retinal DA levels are unaltered in C57BL/6 mice with form-deprivation myopia. This work was undertaken to explore whether and how refractive development is perturbed in this mouse strain when retinal DA levels are reduced by 6-hydroxydopamine (6-OHDA) administration. Methods: On two successive days, 6-OHDA was injected into the vitreous of P18 mice...
October 1, 2016: Investigative Ophthalmology & Visual Science
Seok Hyun Bae, Shin Hee Kang, Chi Shian Feng, Joohyun Park, Jae Hoon Jeong, Kayoung Yi
PURPOSE: To investigate optic nerve head size and retinal nerve fiber layer (RNFL) thickness according to refractive status and axial length. METHODS: In a cross-sectional study, 252 eyes of 252 healthy volunteers underwent ocular biometry measurement as well as optic nerve head and RNFL imaging by spectral-domain optical coherence tomography. Correlation and linear regression analyses were performed for all subjects. The magnification effect was adjusted by the modified axial length method...
October 2016: Korean Journal of Ophthalmology: KJO
Kenneth J Hoffer, Giacomo Savini
PURPOSE: To investigate agreement between the ocular biometry measurements provided by a newer optical biometer, the AL-Scan (Nidek Co, Ltd., Gamagori, Japan) and those provided by the IOLMaster 500 (Carl Zeiss Meditec, Jena Germany), which are both based on partial coherence interferometry. METHODS: Axial length, corneal power, and anterior chamber depth (corneal epithelium to lens) were measured in 86 eyes of 86 patients scheduled for cataract surgery using both biometers...
October 1, 2016: Journal of Refractive Surgery
Gavin P Guy, Hua Z Ling, Mirian Machuca, Liona C Poon, Kypros H Nicolaides
OBJECTIVE: To evaluate the relationship between maternal cardiovascular parameters and neonatal birthweight and examine the potential value of these parameters in improving the prediction of small for gestational age (SGA) and large for gestational age (LGA) neonates provided by maternal characteristics and medical history. METHODS: In 2,835 singleton pregnancies maternal characteristics and medical history were recorded and maternal cardiovascular parameters were measured...
October 5, 2016: Ultrasound in Obstetrics & Gynecology
Owen J Arthurs, A Rega, F Guimiot, N Belarbi, J Rosenblatt, V Biran, M Elmaleh, G Sebag, M Alison
OBJECTIVES: Diffusion weighted magnetic resonance imaging (DWI) is a sensitive method to assess brain maturation or detect brain lesions, providing Apparent Diffusion Coefficient (ADC) values as a measure of water diffusion. Abnormal ADC values are seen in ischemic brain lesions, such as acute or chronic hypoxia. The aim of this study was to assess whether ADC values in the fetal brain were different in a group of fetuses exposed to severe vascular intrauterine growth restriction, compared to normal controls...
October 5, 2016: Ultrasound in Obstetrics & Gynecology
Pelin Özyol, Erhan Özyol, Ercan Baldemir
PURPOSE: Since age-related changes in lens elasticity and ciliary muscle contractility can affect how ocular parameters respond to cycloplegia, intraocular lens (IOL) power measurements calculated by formulas using anterior chamber depth (ACD), lens thickness (LT) or white-to-white (WtW) for effective lens position prediction can vary. In response, using swept-source optical biometry in pre-presbyopic and presbyopic eyes, we investigated changes in ocular parameters and IOL power calculations due to cycloplegia...
October 1, 2016: American Journal of Ophthalmology
William Johnson, Momodou K Darboe, Fatou Sosseh, Patrick Nshe, Andrew M Prentice, Sophie E Moore
Prenatal supplementation with protein-energy (PE) and/or multiple-micronutrients (MMNs) may improve fetal growth, but trials of lipid-based nutritional supplements (LNSs) have reported inconsistent results. We conducted a post-hoc analysis of non-primary outcomes in a trial in Gambia, with the aim to test the associations of LNS with fetal growth and explore how efficacy varies depending on nutritional status. The sample comprised 620 pregnant women in an individually randomized, partially blinded trial with four arms: (a) iron and folic acid (FeFol) tablet (usual care, referent group), (b) MMN tablet, (c) PE LNS, and (d) PE + MMN LNS...
October 2, 2016: Maternal & Child Nutrition
Mohammad Pakravan, Azam Alvani, Hamed Esfandiari, Elham Ghahari, Mehdi Yaseri
Trabeculectomy is the most common surgical procedure for the management of glaucoma, which may significantly influence ocular biometry. Axial length and anterior chamber depth tend to decrease, while crystalline lens and choroidal thickness increase post-operatively. An increase in with-the-rule astigmatism is also observed after the procedure. Such biometric changes affect intraocular lens power calculation even years after the procedure. Non-contact biometric methods and postponing cataract surgery after trabeculectomy could reduce calculation errors associated with surgically induced alterations in ocular biometrics...
September 29, 2016: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
Oliver L Yeh, Karine D Bojikian, Mark A Slabaugh, Philip P Chen
PURPOSE: To examine refractive outcomes after phacoemulsification in eyes with prior trabeculectomy. DESIGN: Retrospective observational case-control study METHODS:: Comparison of eyes of glaucoma patients undergoing cataract surgery after trabeculectomy (study group) with a matched group with medically controlled glaucoma (control group). Laser interferometry was used to obtain ocular biometry. We measured the difference between the expected and actual postoperative refraction using third-generation and fourth-generation intraocular lens (IOL) prediction formulae (Haigis, Holladay 2, Hoffer Q, and SRK-T)...
September 21, 2016: Journal of Glaucoma
G Ambroise Grandjean, M Chamagne, G Hossu, E Perdriolle-Galet, O Morel
No abstract text is available yet for this article.
September 2016: Ultrasound in Obstetrics & Gynecology
J Zhang
No abstract text is available yet for this article.
September 2016: BJOG: An International Journal of Obstetrics and Gynaecology
Yky Cheng, T Y Leung, Tth Lao, Y M Chan, D S Sahota
OBJECTIVE: To assess the impact of adopting the INTERGROWTH-21(st) biometry standards in a Chinese population. DESIGN: Retrospective cohort study. SETTING: A teaching hospital in Hong Kong. POPULATION: A total of 10 527 Chinese women with a singleton pregnancy having a second- or third-trimester fetal anomaly or growth scan between January 2009 and June 2014. METHODS: Z-scores were derived for fetal abdominal circumference (AC), head circumference (HC), and femur length (FL) using the INTERGROWTH-21(st) and Chinese biometry standards...
September 2016: BJOG: An International Journal of Obstetrics and Gynaecology
Sujata Subbiah, Philip A Thomas, C A Nelson Jesudasan
PURPOSE: To compare data on anatomical and biometric parameters, and their combination, obtained by using ultrasound biomicroscopy (UBM) and A-scan in eyes with phacomorphic glaucoma (PG) and eyes with mature cataract and to determine differences that may predispose to development of PG. METHODS: Eighty patients (80 eyes) were enrolled in this cross-sectional study. Anterior chamber parameters, namely anterior chamber depth (ACD), angle-opening distance (AOD), iris-lens contact distance (ILCD), and trabecular-ciliary process distance (TCPD), among other parameters, were assessed by UBM (35 MHz), while axial length (AL) and lenticular thickness (LT) were determined by A-scan biometry...
September 13, 2016: International Ophthalmology
Sarat Abolore Badmus, Ayotunde Idowu Ajaiyeoba, Bernice Oluwakemi Adegbehingbe, Oluwatoyin Helen Onakpoya, Adenike Odunmorayo Adeoye
PURPOSE: The study aimed at determining the associations between ocular biometry and anthropometric measurements in a Nigerian adult population. SUBJECTS AND METHODS: Participants were healthy members of staff and students of Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife. The height and weight were measured, and the body mass index (BMI) was calculated. Ocular axial length (AL), anterior chamber depth (ACD), keratometric readings (K) and corneal radius of curvature were measured with the IOL Master...
July 2016: Nigerian Postgraduate Medical Journal
Azam Alvani, Mohammad Pakravan, Hamed Esfandiari, Sare Safi, Mehdi Yaseri, Parastou Pakravan
This review article aimed to evaluate ocular biometric changes after trabeculectomy. The PubMed database was searched using the keywords "axial length" (AL), "anterior chamber depth" (ACD), "corneal astigmatism," "corneal topography" and "trabeculectomy." The extracted studies were categorized based on the evaluated parameters and the biometry method (contact and non-contact). Comparable studies with respect to their sample size were combined for statistical analysis. Twenty-five studies including 690 individuals which met the inclusion criteria were selected...
July 2016: Journal of Ophthalmic & Vision Research
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