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https://www.readbyqxmd.com/read/27922068/changes-in-retinal-nerve-fiber-layer-thickness-after-multiple-injections-of-novel-vegf-decoy-receptor-conbercept-for-various-retinal-diseases
#1
Zhihua Zhang, Xiaolu Yang, Huiyi Jin, Yuan Qu, Yuan Zhang, Kun Liu, Xun Xu
Conbercept is a recombinant fusion protein with high affinity for all vascular endothelial growth factor isoforms and placental growth factor. The repeated intravitreal injection of conbercept may cause intraocular pressure (IOP) fluctuations and long-term suppression of neurotrophic cytokines, which could lead to retinal nerve fiber layer (RNFL) damage. This retrospective fellow-eye controlled study included 98 eyes of 49 patients. The changes in IOP and RNFL thickness as well as the correlation between RNFL changes and associated factors were evaluated...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27920717/cataract-surgery-with-a-new-fluidics-control-phacoemulsification-system-in-nanophthalmic-eyes
#2
John S M Chang, Jack C M Ng, Vincent K C Chan, Antony K P Law
PURPOSE: To report visual outcomes and complications after cataract surgery in nanophthalmic eyes with a phacoemulsification system using the active fluidics control strategy. METHODS: This is a retrospective case series. All eyes with an axial length of less than 20 mm that underwent cataract surgery or refractive lens exchange using the Centurion Vision System (Alcon Laboratories Inc.) in Hong Kong Sanatorium and Hospital were evaluated. The visual acuity and intraoperative and postoperative complications were reported...
September 2016: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/27920588/appraisal-of-bleb-using-trio-of-intraocular-pressure-morphology-on-slit-lamp-and-gonioscopy
#3
Shreya Thatte, Rimpi Rana, Neeraj Gaur
PURPOSE: The aim of this study was to assess bleb function using Wuerzburg bleb classification score (WBCS) for bleb morphology on slit lamp, intraocular pressure (IOP), and gonioscopy. METHODS: A total of randomly selected 30 eyes posttrabeculectomy were assessed for bleb function with the trio of bleb morphology, IOP, and gonioscopy. Bleb was assessed using the WBCS of 0-12 on slit lamp, IOP was assessed using applanation tonometry, and visualization of inner ostium and iridectomy were assessed using gonioscopy...
2016: Ophthalmology and Eye Diseases
https://www.readbyqxmd.com/read/27916026/role-of-cyclic-amp-in-the-eye-of-glaucoma
#4
Myoung Sup Shim, Keun-Young Kim, Won-Kyu Ju
Glaucoma is characterized by a slow and progressive degeneration of optic nerve, including retinal ganglion cell (RGC) axons in the optic nerve head (ONH), leading to visual impairment. Despite the high prevalence, the biological basis of glaucoma pathogenesis still is not yet fully understood, and the factors contributing to its progression are currently not well characterized. Intraocular pressure (IOP) is the only modifiable risk factor, and reduction of IOP is the standard treatment for glaucoma. However, lowering IOP itself is not always effective for preserving visual function in patients with primary open-angle glaucoma...
December 5, 2016: BMB Reports
https://www.readbyqxmd.com/read/27915382/high-intensity-focused-ultrasound-treatment-in-patients-with-refractory-glaucoma
#5
Giuseppe Giannaccare, A Vagge, C Gizzi, A Bagnis, S Sebastiani, C Del Noce, M Fresina, C E Traverso, E C Campos
PURPOSE: To assess the safety and efficacy of ultrasound coagulation of the ciliary body in refractory glaucoma. METHODS: This prospective multicenter interventional study was conducted in two Italian university-affiliated glaucoma centers: St. Orsola-Malpighi Teaching Hospital (Bologna, Italy) and University Eye Clinic of Genoa (Genoa, Italy). The main inclusion criterion was the diagnosis of glaucoma with a baseline intraocular pressure (IOP) ≥ 21 mmHg while on maximum topical and systemic medical hypotensive treatment...
December 3, 2016: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/27909833/verification-of-a-virtual-fields-method-to-extract-the-mechanical-properties-of-human-optic-nerve-head-tissues-in-vivo
#6
Liang Zhang, Sri Gowtham Thakku, Meghna R Beotra, Mani Baskaran, Tin Aung, James C H Goh, Nicholas G Strouthidis, Michael J A Girard
We aimed to verify a custom virtual fields method (VFM) to estimate the patient-specific biomechanical properties of human optic nerve head (ONH) tissues, given their full-field deformations induced by intraocular pressure (IOP). To verify the accuracy of VFM, we first generated 'artificial' ONH displacements from predetermined (known) ONH tissue biomechanical properties using finite element analysis. Using such deformations, if we are able to match back the known biomechanical properties, it would indicate that our VFM technique is accurate...
December 1, 2016: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/27907165/pre-and-postcycloplegic-refractions-in-children-and-adolescents
#7
Dan Zhu, Yan Wang, Xianrong Yang, Dayong Yang, Kai Guo, Yuanyuan Guo, Xinxia Jing, Chen-Wei Pan
PURPOSE: To determine the difference between cycloplegic and non-cycloplegic refractive error and its associated factors in Chinese children and adolescents with a high prevalence of myopia. METHODS: A school-based study including 1565 students aged 6 to 21 years was conducted in 2013 in Ejina, Inner Mongolia, China. Comprehensive eye examinations were performed. Pre-and postcycloplegic refractive error were measured using an auto-refractor. For cycloplegic refraction, one drop of topical 1...
2016: PloS One
https://www.readbyqxmd.com/read/27906948/cervical-interlaminar-epidural-injections-at-high-doses-do-not-increase-optic-nerve-sheath-diameter-on-a-long-term-basis
#8
Hyunzu Kim, Joo Hyeon O, Sung-Jun Hong, Keun Man Shin, JungChan Park, Sang Soo Kang
BACKGROUND: Cervical epidural injection (CEI) is widely performed on patients with pain originating from the cervical spine. Studies have shown a good relationship between the optic nerve sheath diameter (ONSD) and the intracranial pressure (ICP). OBJECTIVE: The aim of this study was to evaluate the changes in the ONSD as a non-invasive surrogate marker of ICP after CEI. STUDY DESIGN: Prospective observational study. SETTING: Hospital and ambulatory pain clinic...
November 2016: Pain Physician
https://www.readbyqxmd.com/read/27905004/ocular-disposition-of-%C3%A2-8-tetrahydrocannabinol-from-various-topical-ophthalmic-formulations
#9
Nagendra S Punyamurthula, Goutham R Adelli, Waseem Gul, Michael A Repka, Mahmoud A ElSohly, Soumyajit Majumdar
The purposes of this project are to enhance the trans-membrane penetration of Δ(8)-Tetrahydrocannabinol (Δ(8)-THC) and to study the effect of various lipid based systems in delivering the compound, non-invasively, to anterior and posterior ocular chambers. Solid lipid nanoparticles (SLNs), fast gelling films were manufactured using high pressure homogenization and melt cast techniques, respectively. The formulations were characterized for drug content, entrapment efficiency, particle size and subsequently evaluated in vitro for trans-corneal permeation...
November 30, 2016: AAPS PharmSciTech
https://www.readbyqxmd.com/read/27893566/validity-and-reliability-of-a-portable-balance-tracking-system-btracks-in-older-adults
#10
Susan S Levy, Katie J Thralls, Shiloah A Kviatkovsky
BACKGROUND AND PURPOSE: Falls are the leading cause of disability, injury, hospital admission, and injury-related death among older adults. Balance limitations have consistently been identified as predictors of falls and increased fall risk. Field measures of balance are limited by issues of subjectivity, ceiling effects, and low sensitivity to change. The gold standard for measuring balance is the force plate; however, its field use is untenable due to high cost and lack of portability...
November 23, 2016: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/27893548/pressureless-orbital-decompression-for-myopic-proptosis
#11
Saul N Rajak, Richard A McGovern, Dinesh Selva
Orbital decompression surgery increases the orbital volume. It has rarely been used for proptosis of the large highly myopic globe. However, external decompression surgery carries significant risks because of the large thin-walled globe. The authors report the first use of endoscopic medial wall orbital decompression surgery in this setting to obviate the risk of globe pressure.Endoscopic medial wall decompression brought about a 4 mm reduction of proptosis, correction of exotropia and elimination of retrobulbar ache providing good symmetry with the fellow eye...
November 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27891366/evaluation-of-the-central-corneal-thickness-with-anterior-segment-optical-coherence-tomogram-after-penetrating-keratoplasty
#12
Anuradha Raj, Renu Dhasmana, Harsh Bahadur, Ramesh Chander Nagpal
INTRODUCTION: Graft central thickness evaluates the graft quality which affects the outcome of Penetrating Keratoplasty (PK). It varies at different point of time after PK. Anterior Segment Optical Coherence Tomography (ASOCT) can measure graft's central thickness with quite high precision. AIM: The purpose of the study was to monitor the Central Corneal thickness (CCT) with ASOCT after PK and to evaluate its relationship with the pre-operative diagnosis. MATERIALS AND METHODS: This is an observational retrospective study where records of optical PK done in December 2012 and June 2015 were reviewed...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27873338/high-myopes-have-lower-normalised-corneal-tangent-moduli-less-stiff-corneas-than-low-myopes
#13
Ying Hon, Guo-Zhen Chen, Shu-Hao Lu, David C C Lam, Andrew K C Lam
PURPOSE: To compare corneal tangent moduli between low and high myopes. METHODS: Corneal hysteresis (CH) and corneal resistance factor (CRF) of 32 low and 32 high myopes were obtained using an Ocular Response Analyzer, followed by a corneal indentation device that measured corneal stiffness. Corneal topography, pachymetry, Goldmann applanation tonometry intraocular pressure (GAT-IOP), and corneal compensated intraocular pressure (IOPcc) were also obtained. Corneal tangent modulus was calculated on the basis of corneal stiffness, central corneal thickness and corneal radius...
November 21, 2016: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/27871779/intraocular-pressure-measurement-after-dsaek-by-icare-goldmann-applanation-and-dynamic-contour-tonometry-a-comparative-study
#14
A Achiron, O Blumenfeld, H Avizemer, L Karmona, G Leybowich, V Man, E Bartov, Z Burgansky-Eliash
PURPOSE: Corneal thickness inevitably increases following Descemet's stripping automated endothelial keratoplasty (DSAEK), owing to the addition of a donor graft. The current study compares different devices in assessing post-DSAEK intraocular pressure (IOP). METHODS: We compared IOP values measured by the Goldmann tonometry (GAT), iCare rebound tonometry (iCare) and Pascal dynamic contour tonometry (PDCT) in eyes following DSAEK. Agreement between measurements was calculated with correlation analysis and Bland-Altman plots...
November 18, 2016: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/27866331/photoreceptor-degeneration-by-intravitreal-injection-of-n-methyl-n-nitrosourea-mnu-in-rabbits-a-pilot-study
#15
Sarah Rösch, Claudia Werner, Frank Müller, Peter Walter
BACKGROUND: Pilot study on the attempt to induce selective photoreceptor degeneration in the rabbit eye by intravitreal injection of MNU, facing the difficulties of the evaluation of retinal degeneration by different in-vivo and in-vitro methods in such a large eye animal model. METHODS: Eight pigmented Chinchilla Bastard rabbits were injected intravitreally with MNU (1 × 1mg/kg body weight (BW), 1 × 2mg/kg BW, 3 × 3mg/kg BW, 1 × 4mg/kg BW, 1 × 6mg/kg BW, and 1 × DMSO + PBS as control)...
November 19, 2016: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/27865689/retinal-oximetry-during-treatment-of-retinal-vein-occlusion-by-ranibizumab-in-patients-with-high-blood-pressure-and-dyslipidemia
#16
C Keilani, A Halalchi, D Wakpi Djeugue, A Regis, S Abada
INTRODUCTION: In the present study, we examined retinal vascular oxygen saturation in patients with retinal vein occlusion (RVO), high blood pressure (HBP) and dyslipidemia, before and during intravitreal vascular endothelial growth factor (VEGF) injection (ranibizumab). METHODS: We retrospectively reviewed the medical records of six patients with visual acuity (VA) reduced by macular edema (ME) secondary to RVO with HBP and dyslipidemia, who underwent intravitreal anti-VEGF injection between October 2014 and February 2015 in the department of ophthalmology of François-Quesnay Hospital at Mantes-la-Jolie (France)...
November 16, 2016: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/27863469/changes-in-intraocular-pressure-values-measured-with-noncontact-tonometer-nct-ocular-response-analyzer-ora-and-corvis-scheimpflug-technology-tonometer-cst-in-the-early-phase-after-small-incision-lenticule-extraction-smile
#17
Yang Shen, Xiangjian Su, Xiu Liu, Huamao Miao, Xuejun Fang, Xingtao Zhou
BACKGROUND: Corneal biomechanical properties are always compromised after corneal refractive surgeries thus leading to underestimated intraocular pressure (IOP) that complicates the management of IOP. We investigated the changes in postoperative baseline of IOP values measured with noncontact tonometer (NCT), ocular response analyzer (ORA) and corvis scheimpflug technology (CST) in the early phase after small incision lenticule extraction (SMILE). METHODS: Twenty-two eyes (-6...
November 18, 2016: BMC Ophthalmology
https://www.readbyqxmd.com/read/27858370/intracranial-hypertension-in-cystinosis-is-a-challenge-experience-in-a-children-s-hospital
#18
Nieves Martín-Begué, Silvia Alarcón, Charlotte Wolley-Dod, Luis Enrique Lara, Álvaro Madrid, Paola Cano, Mireia Del Toro, Gema Ariceta
BACKGROUND: Cystinosis is a rare systemic lysosomal disease affecting mainly the kidney and eye. Ocular involvement in cystinosis is universal being the presence of cystine crystals in the cornea a diagnostic criterion and one of the earliest manifestations of the disease. Neuro-ophthalmologic manifestations are considered a rare and late complication in these patients. The aim of this article is to report the unexpectedly high incidence of intracranial hypertension in children with cystinosis at our centre...
November 18, 2016: JIMD Reports
https://www.readbyqxmd.com/read/27846047/optic-nerve-head-histopathology-in-high-axial-myopia
#19
Jost B Jonas, Kyoko Ohno-Matsui, Songhomitra Panda-Jonas
PURPOSE: To describe particularities of the optic nerve head of axially highly myopic eyes. METHODS: Measurements were obtained from enucleated globes and from population-based studies. RESULTS: Morphologic optic disc particularities in high axial myopia included enlarged disc size (secondary macrodisc), widening and temporal translocation of the papillary Bruch's membrane (BM) opening, parapapillary gamma and delta zone, elongation and thinning of lamina cribrosa and peripapillary scleral flange, steeper translamina cribrosa pressure gradient, decreased peripapillary choroid thickness, longer distance between peripapillary arterial circle and optic disc, optic cup flattening, presumably a stretching of the lamina cribrosa pores, and peripapillary intrachoroidal cavitations...
November 11, 2016: Journal of Glaucoma
https://www.readbyqxmd.com/read/27844100/-secondary-diseases-in-high-myopia
#20
F Ziemssen, W Lagrèze, B Voykov
BACKGROUND: Eyes with high myopia (axial length ≥ 26.5 mm) do not just have a different size. Due to morphological and structural changes there is a considerably increased risk for many different secondary diseases. OBJECTIVE: Determination of the incidence and mortality in high myopia, discussion of effects and clinical signs, presentation of treatment recommendations and counselling. MATERIAL AND METHODS: A systematic search of the literature was carried out and a discussion on basic principles and epidemiological investigations is presented...
November 14, 2016: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
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