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https://www.readbyqxmd.com/read/29677364/long-anterior-lens-zonules-and-intraocular-pressure
#1
Daniel K Roberts, Tricia L Newman, Mary Flynn Roberts, Bruce A Teitelbaum, Janis E Winters
Purpose: To investigate the relation between intraocular pressure (IOP) and the idiopathic long anterior zonule (LAZ) trait. Methods: Patients presenting for primary eye care were examined for LAZ, identified as radially oriented zonular fibers with central extension >1.0 mm beyond the normal anterior lens insertion zone (estimated via slit lamp beam length). Ocular, systemic health, and lifestyle data were collected via comprehensive exam and questionnaire. Multivariate regression was used to assess the relationship between IOP (Goldmann) and LAZ...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29677108/plasmonic-optical-fiber-sensor-based-on-double-step-growth-of-gold-nano-islands
#2
José M M M de Almeida, Helena Vasconcelos, Pedro A S Jorge, Luis Coelho
It is presented the fabrication and characterization of optical fiber sensors for refractive index measurement based on localized surface plasmon resonance (LSPR) with gold nano-islands obtained by single and by repeated thermal dewetting of gold thin films. Thin films of gold deposited on silica (SiO₂) substrates and produced by different experimental conditions were analyzed by Scanning Electron Microscope/Dispersive X-ray Spectroscopy (SEM/EDS) and optical means, allowing identifying and characterizing the formation of nano-islands...
April 20, 2018: Sensors
https://www.readbyqxmd.com/read/29676405/reply-to-comment-on-ocular-manifestations-of-sickle-cell-disease-and-genetic-susceptibility-for-refractive-errors
#3
COMMENT
Palak Shukla, Henu Verma, Santosh Patel, P K Patra, L V K S Bhaskar
No abstract text is available yet for this article.
January 2018: Taiwan Journal of Ophthalmology
https://www.readbyqxmd.com/read/29676308/correlation-between-dry-eye-and-refractive-error-in-saudi-young-adults-using-noninvasive-keratograph-4
#4
Rania M Fahmy, Amal Aldarwesh
Purpose: The purpose is to study the correlation between dry eye and refractive errors in young adults using noninvasive Keratograph. Methods: In this cross sectional study, a total of 126 participants in the age range of 19-25 years and who were free of ocular surface disease, were recruited from King Saud University Campus. Refraction was defined by the spherical equivalent (SE) as the following: 49 emmetropic eyes (±0.50 SE), 48 myopic eyes (≤-0.75 SE and above), and 31 hyperopic eyes (>+0...
May 2018: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29676306/spectacle-prescription-in-children-understanding-practical-approach-of-indian-ophthalmologists
#5
Sumit Monga, Paaraj Dave
Purpose: The aim of this study is to survey the management approach, regarding spectacle prescription in children, among Indian ophthalmologists. Methods: A web-based, anonymous questionnaire (multiple choice questions dealing with practical aspects of pediatric refraction), was sent to available database of Indian ophthalmologists. The survey responses (depicted in %) were compared using the amount of pediatric clientele in one's practice (Group A: <25%, Group B: 25% or more)...
May 2018: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29675390/childhood-glaucoma-profile-in-dakahelia-egypt-a-retrospective-study
#6
Tharwat H Mokbel, Eman M El Hefney, Sherein M Hagras, Ahmed A ALNagdy, Amani E Badawi, Manal A Kasem, Shereen M El Shaer
AIM: To analyze childhood glaucoma regarding its demographics, presentations, different causes and surgical modalities used among patients in Dakahelia and to apply the Childhood Glaucoma Research Network (CGRN) classification retrospectively to evaluate its convenience. METHODS: A retrospective study in which the medical files of all glaucoma patients <16 years old presented to Mansoura Ophthalmic Center, Mansoura University from 2014 to 2017, were retrieved and analyzed...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29675388/consistent-comparison-of-angle-kappa-adjustment-between-oculyzer-and-topolyzer-vario-topography-guided-lasik-for-myopia-by-ex500-excimer-laser
#7
Ming-Shen Sun, Li Zhang, Ning Guo, Yan-Zheng Song, Feng-Ju Zhang
AIM: To evaluate and compare the uniformity of angle Kappa adjustment between Oculyzer and Topolyzer Vario topography guided ablation of laser in situ keratomileusis (LASIK) by EX500 excimer laser for myopia. METHODS: Totally 145 cases (290 consecutive eyes )with myopia received LASIK with a target of emmetropia. The ablation for 86 cases (172 eyes) was guided manually based on Oculyzer topography (study group), while the ablation for 59 cases (118 eyes) was guided automatically by Topolyzer Vario topography (control group)...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29675387/comparison-of-optical-quality-after-implantable-collamer-lens-implantation-and-wavefront-guided-laser-in-situ-keratomileusis
#8
Hong-Ting Liu, Zhou Zhou, Wu-Qiang Luo, Wen-Jing He, Owhofasa Agbedia, Jiang-Xia Wang, Jian-Zhong Huang, Xin Gao, Min Kong, Min Li, Li Li
AIM: To compare the optical quality after implantation of implantable collamer lens (ICL) and wavefront-guided laser in situ keratomileusis (WG-LASIK). METHODS: The study included 40 eyes of 22 patients with myopia who accepted ICL implantation and 40 eyes of 20 patients with myopia who received WG-LASIK. Before surgery and three months after surgery, the objective scattering index (OSI), the values of modulation transfer function (MTF) cutoff frequency, Strehl ratio, and the Optical Quality Analysis System (OQAS) values (OVs) were accessed...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29675379/photorefractive-keratectomy-after-cataract-surgery-in-uncommon-cases-long-term-results
#9
Anna Maria Roszkowska, Mario Urso, Giuseppe Alberto Signorino, Leopoldo Spadea, Pasquale Aragona
AIM: To evaluate the efficacy and safety of the excimer laser correction of the residual refractive errors after cataract extraction with intraocular lens (IOL) implantation in uncommon cases. METHODS: Totally 24 patients with high residual refractive error after cataract surgery with IOL implantation were examined. Twenty-two patients had a history of phacoemulsification and IOL implantation, and two had extra-capsular cataract extraction with IOL implantation...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29675347/anisometropia-and-refractive-status-in-children-with-unilateral-congenital-nasolacrimal-duct-obstruction
#10
Adnan Aslam Saleem, Sorath Noorani Siddiqui, Umair Wakeel, Muhammad Asif
OBJECTIVE: The objective of the study was to evaluate the refractive status and thereby assess anisometropia in children with unilateral congenital nasolacrimal duct obstruction (CNLDO). STUDY DESIGN: This study design was a descriptive cross-sectional study. PLACE AND DURATION: this study was conducted at the Department of Pediatric Ophthalmology and Strabismology, Al-Shifa Trust Eye Hospital, Rawalpindi; from August 2013 to July 2014. METHODOLOGY: This study assessed consecutive children with unilateral CNLDO...
January 2018: Taiwan Journal of Ophthalmology
https://www.readbyqxmd.com/read/29675297/minimally-invasive-multimode-optical-fiber-microendoscope-for-deep-brain-fluorescence-imaging
#11
Shay Ohayon, Antonio Caravaca-Aguirre, Rafael Piestun, James J DiCarlo
A major open challenge in neuroscience is the ability to measure and perturb neural activity in vivo from well defined neural sub-populations at cellular resolution anywhere in the brain. However, limitations posed by scattering and absorption prohibit non-invasive multi-photon approaches for deep (>2mm) structures, while gradient refractive index (GRIN) endoscopes are relatively thick and can cause significant damage upon insertion. Here, we present a novel micro-endoscope design to image neural activity at arbitrary depths via an ultra-thin multi-mode optical fiber (MMF) probe that has 5-10X thinner diameter than commercially available micro-endoscopes...
April 1, 2018: Biomedical Optics Express
https://www.readbyqxmd.com/read/29675296/ultrahigh-resolution-retinal-imaging-by-visible-light-oct-with-longitudinal-achromatization
#12
Shau Poh Chong, Tingwei Zhang, Aaron Kho, Marcel T Bernucci, Alfredo Dubra, Vivek J Srinivasan
Chromatic aberrations are an important design consideration in high resolution, high bandwidth, refractive imaging systems that use visible light. Here, we present a fiber-based spectral/Fourier domain, visible light OCT ophthalmoscope corrected for the average longitudinal chromatic aberration (LCA) of the human eye. Analysis of complex speckles from in vivo retinal images showed that achromatization resulted in a speckle autocorrelation function that was ~20% narrower in the axial direction, but unchanged in the transverse direction...
April 1, 2018: Biomedical Optics Express
https://www.readbyqxmd.com/read/29675275/effect-of-altered-retinal-cones-opsins-on-refractive-development-under-monochromatic-lights-in-guinea-pigs
#13
Leilei Zou, Xiaoyu Zhu, Rui Liu, Fei Ma, Manrong Yu, Hong Liu, Jinhui Dai
Purpose: To analyze the changes of refraction and metabolism of the retinal cones under monochromatic lights in guinea pigs. Methods: Sixty guinea pigs were randomly divided into a short-wavelength light (SL) group, a middle-wavelength light (ML) group, and a white light (WL) group. Refraction and axial length were measured before and after 10-week illumination. The densities of S-cones and M-cones were determined by retinal cone immunocytochemistry, and the expressions of S-opsins and M-opsins were determined by real-time PCR and Western blot...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29675272/topical-osmoprotectant-for-the-management-of-postrefractive-surgery-induced-dry-eye-symptoms-a-randomised-controlled-double-blind-trial
#14
R M Hazarbassanov, N G T Queiroz-Hazarbassanov, J N Barros, J A P Gomes
Background: Dry eye disease (DED) is one of the most common complications following refractive surgery. Purpose: Evaluate the efficacy of an osmoprotective eye drop (Optive®) for the management of induced DED in refractive surgery patients. Design: Double-masked randomised controlled trial. Methods: Twenty-two refractive surgery patients oriented to apply FreshTears (FT; n = 13) or Optive (Op; n = 9), topically, QID, for 3 months...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29674843/intraoperative-complications-of-refractive-small-incision-lenticule-extraction-in-the-early-learning-curve
#15
Abdelmonem M Hamed, Shereef M Abdelwahab, Tarek T Soliman
Purpose: To study the intraoperative complications of refractive small incision lenticule extraction (ReSMILE push-up technique), and to record the mean intraoperative duration time of all surgeries for the refractive surgeon in his early learning curve. Setting: Ebsar Eye Center, Benha, Egypt. Design: A prospective, single-center, cohort clinical study. Methods: This prospective, single-center, cohort clinical study was done on patients with myopia and myopic astigmatism, who were enrolled for SMILE surgeries...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29674278/cassia-grandis-fruit-extract-reduces-the-blood-glucose-level-in-alloxan-induced-diabetic-rats
#16
Ariadna Lafourcade Prada, Jesús Rafael Rodríguez Amado, Hady Keita, Edgar Puente Zapata, Helison Carvalho, Emersom Silva Lima, Tatiane Pereira de Sousa, José Carlos Tavares Carvalho
INTRODUCTION: Cassia grandis Lf fruits are ethnobotanically used for digestive disorders, anemia, and for reducing blood glucose. However, there are no studies about the antidiabetic activity nor the oral toxicity of the plant fruit-extracts. This paper aims to evaluate the hypoglycemic effect of C. grandis fruits extract in vivo, and assess the acute oral toxicity, and sub-acute oral toxicity. The antioxidant activity and the α-glycosidase inhibitor effect were also evaluated. METHODS: The extract was obtained by maceration of the fruit pulp with 70% hydroalcoholic solution (1:2, m:v)...
April 16, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29674070/surface-plasmon-resonance-sensing-with-adjustable-sensitivity-based-on-a-flexible-liquid-core-coupling-unit
#17
Jiying Xu, Yi Chen
The signal amplification methods of surface plasmon resonance (SPR) are mainly with sample selectivity. Herein proposed is a liquid core coupling SPR sensing method with adjustable sensitivity and universal applicability. A liquid core coupling unit and based on which a wavelength interrogation SPR sensor have been designed and constructed, in which a conventional chip could be used with an ingenious design and the sensitivity can be adjusted by changing the liquid core refractive index. The experimental data revealed that the sensitivity can be enhanced for 7...
July 1, 2018: Talanta
https://www.readbyqxmd.com/read/29673628/-descemet-s-membrane-endothelial-keratoplasty-indication-surgical-technic-postoperative-management-and-review-of-literature
#18
REVIEW
V Kocaba, O Damour, C Auxenfans, C Burillon
Endothelial keratoplasty is currently the preferred method for the treatment of endothelial dysfunctions and dystrophies. Descemet Membrane Endothelial Keratoplasty (DMEK), described by Gerrit Melles in 2006, is performed by selectively replacing the damaged endothelium with a healthy counterpart. It leads to a faster visual recovery and better refractive outcomes with a limited risk of rejection compared to Descemet's Stripping Automated Endothelial Keratosplasty (DSAEK), which includes a thin stromal layer...
April 17, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29673260/glaucoma-progression-and-its-relationship-with-corrected-and-uncorrected-intraocular-pressure-in-eyes-with-history-of-refractive-corneal-surgery
#19
Junki Kwon, Kyung Rim Sung, Jaehyuck Jo, Sung Ho Yang
PURPOSE: To investigate glaucoma progression and its relationship with corrected and uncorrected intraocular pressure (IOP) in patients with a history of refractive corneal surgery (RCS). METHODS: Total 56 eyes of 56 primary open-angle glaucoma patients who had a history of RCS were included. Mean keratometry and central corneal thickness were measured at the time of glaucoma diagnosis. Three IOP measurements, i.e., uncorrected IOP (UC IOP) and corrected IOP calculated by applying the Kohlhaas (CK IOP) and Ehlers (CE IOP) formulas, were used...
April 20, 2018: Current Eye Research
https://www.readbyqxmd.com/read/29673220/ultrasensitive-mach-zehnder-interferometric-temperature-sensor-based-on-liquid-filled-d-shaped-fiber-cavity
#20
Hui Zhang, Shecheng Gao, Yunhan Luo, Zhenshi Chen, Songsong Xiong, Lei Wan, Xincheng Huang, Bingsen Huang, Yuanhua Feng, Miao He, Weiping Liu, Zhe Chen, Zhaohui Li
A liquid-filled D-shaped fiber (DF) cavity serving as an in-fiber Mach&ndash;Zehnder interferometer (MZI) has been proposed and experimentally demonstrated for temperature sensing with ultrahigh sensitivity. The miniature MZI is constructed by splicing a segment of DF between two single-mode fibers (SMFs) to form a microcavity (MC) for filling and replacement of various refractive index (RI) liquids. By adjusting the effective RI difference between the DF and MC (the two interference arms), experimental and calculated results indicate that the interference spectra show different degrees of temperature dependence...
April 17, 2018: Sensors
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