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https://www.readbyqxmd.com/read/28933972/visual-acuity-and-macular-and-peripapillary-thickness-in-high-myopia
#1
Solmaz Abdolrahimzadeh, Francesco Parisi, Andrea Maria Plateroti, Federica Evangelista, Vito Fenicia, Gianluca Scuderi, Santi Maria Recupero
PURPOSE: To investigate best corrected visual acuity (BCVA), and choroidal and retinal thickness values between high myopes without myopic maculopathy and emmetropes. MATERIALS AND METHODS: Case control study where 53 myopes with axial length (AL) above 26 mm without myopic maculopathy and 53 age-matched emmetropes with AL between 21.50 and 24.50 were included as controls. Complete ophthalmological examination and biometry were performed. Choroidal and individual retinal layer thickness maps using spectral domain optical coherence tomography were obtained in the macular and peripapillary area with enhanced depth imaging...
September 21, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28932335/cataract-surgery-in-patients-with-keratoconus-pearls-and-pitfalls
#2
F Aiello, Q J Nasser, C Nucci, R I Angunawela, Z Gatzioufas, V Maurino
BACKGROUND: Keratoconus (KC) is a common ectatic disorder resulting in progressive corneal thinning and irregular astigmatism. It has been observed that patients affected by KC are more likely to develop lens opacities earlier compared to non-keratoconic patients. OBJECTIVE: Intraocular lens (IOL) selection and refractive outcome prediction are among a number of factors that can make cataract surgery in keratoconic patients challenging. Accurate biometry is often difficult to obtain due to unreliable K measurements and lack of dedicated biometric formulae...
2017: Open Ophthalmology Journal
https://www.readbyqxmd.com/read/28926826/a-low-cerebroplacental-ratio-at-20-24-weeks-of-gestation-can-predict-reduced-fetal-size-later-in-pregnancy-or-at-birth
#3
Edgar Hernandez-Andrade, Eli Maymon, Offer Erez, Homam Saker, Suchaya Luewan, Maynor Garcia, Hyunyoung Ahn, Adi L Tarca, Bogdan Done, Steven J Korzeniewski, Sonia S Hassan, Roberto Romero
AIM: To determine whether Doppler evaluation at 20-24 weeks of gestation can predict reduced fetal size later in pregnancy or at birth. METHODS: Fetal biometry and Doppler velocimetry were performed in 2,986 women with a singleton pregnancy at 20-24 weeks of gestation. Predictive performances of the umbilical artery pulsatility index (UA-PI) or the mean uterine artery pulsatility index (UtA-PI) >95th percentile, middle cerebral artery pulsatility index, or cerebroplacental ratio (CPR) <5th percentile for early small for gestational age (SGA; <34 weeks of gestation), late SGA (≥34 weeks of gestation), or SGA at birth (birthweight <10th percentile) were analyzed...
September 20, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28917399/variability-in-angle-%C3%AE%C2%BA-and-its-influence-on%C3%A2-higher-order-aberrations-in%C3%A2-pseudophakic-eyes
#4
Annette Harrer, Nino Hirnschall, Juan Tabernero, Pablo Artal, Petra Draschl, Sophie Maedel, Oliver Findl
PURPOSE: To observe the variability in angle κ in pseudophakic patients and assess its correlation with optical biometry measurements and higher-order aberrations (HOAs). SETTING: Hanusch Hospital, Vienna, Austria. DESIGN: Prospective case series. METHODS: This study included patients who had cataract surgery 3 months to 1 year before study recruitment. In all cases, Purkinje meter images were taken. In addition, partial coherence interferometry measurement (IOLMaster) of the axial intraocular lens (IOL) position was performed...
August 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28905827/refractive-and-ocular-biometric-profile-of-children-with-a-history-of-laser-treatment-for-retinopathy-of-prematurity
#5
Savleen Kaur, Jaspreet Sukhija, Deeksha Katoch, Mansi Sharma, Ramanuj Samanta, Mangat R Dogra
PURPOSE: Indian children belong to a diverse socioeconomic strata with retinopathy of prematurity (ROP) developing in mature, higher birth weight babies as well. The purpose of our study is to analyze the long-term status of refractive errors and its relationship with ocular biometry in children with ROP who were laser treated at a tertiary center in North India. METHODS: Cross sectional study. Children (<16 years) enrolled from January 2014 to December 2014 with a history of laser treatment for ROP and examined for refractive and biometric status...
September 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28905823/refractive-outcomes-of-intraoperative-wavefront-aberrometry-versus-optical-biometry-alone-for-intraocular-lens-power-calculation
#6
Zina Zhang, Logan William Thomas, Szu-Yen Leu, Steven Carter, Sumit Garg
PURPOSE: To compare the outcomes of intraoperative wavefront aberrometry versus optical biometry alone for intraocular lens (IOL) power calculation in eyes undergoing cataract surgery with monofocal IOL implantation. METHODS: Preoperative data were obtained with the IOLMaster. Intraoperative aphakic measurements and IOL power calculations were obtained in some patients with the optiwave refractive analysis (ORA) system. Analysis was performed to determine the accuracy of monofocal IOL power prediction and postoperative manifest refraction at 1 month of the ORA versus IOLMaster...
September 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28900109/region-specific-differential-corneal-and-scleral-mrna-expressions-of-mmp2-timp2-and-tgfb2-in-highly-myopic-astigmatic-chicks
#7
Lisa Yan-Yan Xi, Shea Ping Yip, Sze Wan Shan, Jody Summers-Rada, Chea-Su Kee
Myopia and astigmatism, two common refractive errors frequently co-exist, are affecting vision at all working distances in the affected populations worldwide. Eyeballs having these refractive errors are known to exhibit abnormal eye shape at the anterior and posterior eye segments, but whether the outer coats of these abnormal eyeballs, cornea anteriorly and sclera posteriorly, are regulated by region-specific molecular mechanism remains unclear. Here we presented the changes in mRNA expression levels of three genes (MMP2, TIMP2, and TGFB2), all known to participate in extracellular matrix organization, at five regions of the cornea and sclera in chickens developing high myopia and astigmatism induced by form deprivation...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28891727/methodology-of-the-zoc-bhvi-high-myopia-cohort-study-the-onset-and-progression-of-myopic-pathologies-and-associated-risk-factors-in-highly-myopic-chinese
#8
Yanxian Chen, Ou Xiao, Xinxing Guo, Decai Wang, Padmaja Sankaridurg, Ian Morgan, Mingguang He
PURPOSE: The increasing prevalence of high myopia and its associated pathologies has raised challenges to ophthalmic services. This project aims to explore the onset and progression of myopic pathologies in highly myopic eyes through a prospective research cohort established in South China. METHODS: Patients with high myopia (sphere ≤ -6.00 D) visiting the optometric clinic of Zhongshan Ophthalmic Center (ZOC) were invited to participate in the baseline examinations and follow-up visit over a 10-year period...
September 11, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28887137/effects-of-a-high-level-of-illumination-before-sleep-at-night-on-chorioretinal-thickness-and-ocular-biometry
#9
Jaemoon Ahn, Soh-Eun Ahn, Kyung-Sook Yang, Seong-Woo Kim, Jaeryung Oh
The choroid is affected by many factors. One of the factors, change in illumination has been suggested to influence choroidal thickness. However, the effects of bright light before sleep at night on the human eye are not well established. The purpose of this study was to investigate the effects of a high level of illumination in the evening on ocular measurements. Twenty-seven men with myopia spent seven consecutive nights in the sleep laboratory. During the first two nights, subjects were exposed to light at 150 lux between 20:00 and midnight...
September 5, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28861350/refractive-errors-and-biometry-of-primary-angle-closure-disease-in-a-mixed-malaysian-population
#10
Jelinar Mohamed-Noor, Dhaniah Abd-Salam
AIM: To assess the refractive status, anterior chamber depth (ACD) and axial length (AL) of patients with primary angle-closure disease (PACD). METHODS: Retrospective cohort. Data was collected from charts of all PACD patients treated from April 2013 to December 2015. Analysis was done on 137 patient charts with complete biometric data. Patient demographics, PACD type, refractive status (spherical equivalent), ACD and AL were studied. RESULTS: The median age of 137 subjects [53 with primary angle-closure suspects (PACS), 27 with primary angle-closure (PAC) and 57 with primary angle-closure glaucoma (PACG)] was 68y (range 21-88y)...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28860140/lens-power-in-iranian-schoolchildren-a-population-based-study
#11
Hassan Hashemi, Reza Pakzad, Rafael Iribarren, Mehdi Khabazkhoob, Mohammad Hassan Emamian, Akbar Fotouhi
AIMS: To evaluate lens power (LP) in schoolchildren aged 6-12 years. METHODS: This cross-sectional study was conducted in Shahroud, northeast Iran. The students were selected through random cluster sampling and underwent the measurements of biometry, uncorrected and corrected visual acuity, non-cycloplegic and cycloplegic refraction. The LP was calculated using the Bennett formula. RESULTS: Of 6624 invited children, 5620 (84.8%) participated in the study and data of 4870 children were finally analysed...
August 31, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28858045/corneal-hysteresis-is-reduced-in-obstructive-sleep-apnea-syndrome
#12
Suchitra Nadarajah, Amir Samsudin, Norlina Ramli, Chong Tin Tan, Zahari Mimiwati
SIGNIFICANCE: To our knowledge, this is the first time a study looking at the association between corneal hysteresis (CH) and obstructive sleep apnea syndrome (OSAS) severity has been reported. We provide evidence that CH is lower in OSAS and speculate on the possible causes. PURPOSE: The present study aims to look at the association between CH and severity of OSAS, and whether CH could be another link between OSAS and the development of glaucoma. METHODS: This was a cross-sectional, observational study at the University Malaya Medical Centre, Kuala Lumpur...
August 25, 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28855546/the-effect-of-topical-administration-of-cyclopentolate-on-ocular-biometry-an-analysis-for-mouse-and-human-models
#13
Furong Huang, Shenghai Huang, Ruozhong Xie, Yanan Yang, Jiaofeng Yan, Xiaowen Cao, Chunlan Zhang, Feng Zhou, Meixiao Shen, Jia Qu, Xiangtian Zhou
Mydriasis with muscarinic antagonists have been used routinely prior to retinal examination and sometimes prior to refractive measurements of the mouse eye. However, biometric changes during topical administration of muscarinic antagonists have not been fully investigated in mice and humans. We found that the mouse eyes treated with cyclopentolate developed a hyperopia with a reduction in both the vitreous chamber depth and axial length. In humans, prior to the cyclopentolate treatment, a 6D accommodative stimulus produced a myopic shift with a reduced anterior chamber depth, choroidal thickness and anterior lens radius of curvature and an increase in lens thickness...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28854269/six-year-changes-in-refraction-and-related-ocular-biometric-factors-in-an-adult-chinese-population
#14
Xiaotong Han, Xinxing Guo, Pei Ying Lee, Ian G Morgan, Mingguang He
PURPOSE: To investigate longitudinal changes in refraction and biometry in Chinese adults. DESIGN: Population-based prospective cohort study. METHODS: 1817 subjects aged ≥ 35 years were randomly recruited from Yuexiu district, Guangzhou, China in 2008. Of which 1595 (87.8%) were reexamined in 2010 and 1427 (78.5%) were reexamined in 2014. Non-cycloplegic automated refraction and visual acuity test were performed at baseline and the 6-year follow-up examination for all participants...
2017: PloS One
https://www.readbyqxmd.com/read/28852585/implications-of-nutritional-stress-as-nestling-or-fledgling-on-subsequent-attractiveness-and-fecundity-in-zebra-finches-taeniopygia-guttata
#15
Mariam Honarmand, E Tobias Krause, Marc Naguib
The conditions an organism experiences during early development can have profound and long lasting effects on its subsequent behavior, attractiveness, and life history decisions. Most previous studies have exposed individuals to different conditions throughout development until nutritional independence. Yet under natural conditions, individuals may experience limitations for much shorter periods due to transient environmental fluctuations. Here, we used zebra finches (Taeniopygia guttata) in captivity to determine if conditions experienced during distinctly different early developmental phases contribute differently to male and female attractiveness and subsequent reproduction...
2017: PeerJ
https://www.readbyqxmd.com/read/28834818/agreement-of-corneal-diameter-measurements-obtained-by-a-swept-source-biometer-and-a-scheimpflug-based-topographer
#16
Ramin Salouti, Mohammad Hossein Nowroozzadeh, Zahra Tajbakhsh, Mansoureh Bagheri, Maryam Ghoreyshi, Monir Azizzadeh, Mohammad Reza Razeghinejad
PURPOSE: To assess the agreement between a swept-source optical biometry device (IOLMaster 700) and a Scheimpflug-based topography device (Pentacam HR) in measuring the corneal diameter. METHODS: A total of 100 eyes from 100 cataract surgery candidates were enrolled. The white-to-white (WTW) distance measurements provided by both devices were recorded and analyzed. A paired t test was performed to compare the mean values of the WTW distance between the IOLMaster 700 and Pentacam HR...
August 22, 2017: Cornea
https://www.readbyqxmd.com/read/28808644/the-comparative-study-of-refractive-index-variations-between-haigis-srk-t-and-hoffer-q-formulas-used-for-preoperative-biometry-calculation-in-patients-with-the-axial-length-25-mm
#17
Hasan Razmjoo, Hosein Atarzadeh, Neda Kargar, Mohammad Behfarnia, Kobra Nasrollahi, Ali Kamali
BACKGROUND: To compare refractive index variation between Hoffer-Q, Haigis and SRK/T formulas used for preoperative biometry calculation in patients with axial length >25 mm, undergoing cataract surgery. MATERIALS AND METHODS: This is a randomized clinical trial study was performed on 54 eyes of 54 patients with ages of 40-70 years old and axial length >25 mm classified into three groups that their IOL POWER were calculated by Haigis, SRK/T and Hoffer-Q formulas before undergoing cataract surgery...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28802114/embryonic-and-fetal-morphology-in-the-lowland-paca-cuniculus-paca-a-precocial-hystricomorph-rodent
#18
Hani Rocha El Bizri, Frederico Ozanan Barros Monteiro, Rafael Dos Santos de Andrade, João Valsecchi, Diva Anelie de Araújo Guimarães, Pedro Mayor
In mammals, the embryonic and fetal development of a species has evolved to maximize neonatal survival. In this study, we use a sample of 132 embryos/fetuses of wild lowland paca (Cuniculus paca), obtained over a period of 15 years through collaborative methods with local hunters in the Amazon to describe the intrauterine development of external and internal morphology of this Neotropical rodent. We also compare the newborn survival strategy in this species with other rodents. The crown-rump length (CRL) ranged between 0...
August 3, 2017: Theriogenology
https://www.readbyqxmd.com/read/28782146/cerebroplacental-ratio-in-reduced-fetal-movements-evidence-for-worsening-fetal-hypoxemia
#19
Julia Binder, Caitriona Monaghan, Baskaran Thilaganathan, José Morales-Roselló, Asma Khalil
OBJECTIVE: To investigate the fetal cerebroplacental ratio (CPR) in women presenting with reduced fetal movements (RFM). METHODS: This is a retrospective cohort study conducted over a 7-year period at a Fetal Medicine Unit at a tertiary referral centre. 4500 singleton pregnancies presenting with RFM after 36 weeks' gestation and 1527 control pregnancies at a similar gestation without RFM were analysed. Fetal biometry and Doppler parameters were recorded and converted into centiles and multiples of the median (MoM)...
August 7, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28780781/multifocal-intraocular-lenses-and-extended-depth-of-focus-intraocular-lenses
#20
Detlev R H Breyer, Hakan Kaymak, Timon Ax, Florian T A Kretz, Gerd U Auffarth, Philipp R Hagen
Presbyopia and cataract patients' desire for increased spectacle independence after surgery is one of the main drivers for the development of multifocal intraocular lenses (MIOLs) and extended depth of focus (EDOF) intraocular lenses (IOLs). As education, biometry, diagnostics, surgical techniques, and MIOL/EDOF IOL designs have improved over the past decade, an increasing number of cataract surgeons have become cataract-refractive surgeons to help address this need. There is not 1 single MIOL/EDOF IOL, however, that suits all patients' needs...
July 2017: Asia-Pacific Journal of Ophthalmology
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