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https://www.readbyqxmd.com/read/28630797/spontaneous-resolution-of-optic-disc-pit-maculopathy
#1
Koushik Tripathy
No abstract text is available yet for this article.
June 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28623289/3d-super-resolution-optical-profiling-using-microsphere-enhanced-mirau-interferometry
#2
Ivan Kassamakov, Sylvain Lecler, Anton Nolvi, Audrey Leong-Hoï, Paul Montgomery, Edward Hæggström
We present quantitative three dimensional images of grooves on a writable Blu-ray Disc based on a single objective Mirau type interferometric microscope, enhanced with a microsphere which is considered as a photonic nanojet source. Along the optical axis the resolution of this microsphere assisted interferometry system is a few nanometers while the lateral resolution is around 112 nm. To understand the physical phenomena involved in this kind of imaging we have modelled the interaction between the photonic jet and the complex disc surface...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28620652/visual-and-morphologic-outcomes-in-eyes-with-hard-exudate-in-the-comparison-of-age-related-macular-degeneration-treatments-trials
#3
Ebenezer Daniel, Juan E Grunwald, Benjamin J Kim, Maureen G Maguire, Glenn J Jaffe, Cynthia A Toth, Frederick L Ferris, Daniel F Martin, James Shaffer, Gui-Shuang Ying
PURPOSE: To compare baseline characteristics, visual acuity (VA) and morphological outcomes between eyes with baseline hard exudates (HE) and all other eyes among patients with neovascular age-related macular degeneration (NVAMD) treated with anti-vascular endothelial growth factors (anti-VEGF). DESIGN: Prospective cohort study within the Comparison of Age-Related Macular Degeneration Treatments Trials (CATT). PARTICIPANTS: Patients with NVAMD...
January 2017: Ophthalmology retina
https://www.readbyqxmd.com/read/28616896/high-resolution-transbulbar-ultrasonography-helping-differentiate-intracranial-hypertension-in-bilateral-optic-disc-oedema-patients
#4
Qian Chen, Weimin Chen, Min Wang, Xinghuai Sun, Yan Sha, Zhenxin Li, Guohong Tian
PURPOSE: The enlargement of optic nerve sheath diameter (ONSD) has been proven to be related with raised intracranial pressure (ICP). No prospective study has been focused on utilizing retrobulbar ultrasonography in optic disc oedema patient presented to ophthalmologist. METHODS: High-resolution transbulbar ultrasonography was performed in a cohort of patient presented with bilateral optic disc oedema. The subarachnoid space of optic nerve (SAS), ONSD and optic nerve diameter (OND) was measured prior to other ancillaries including lumbar puncture...
June 14, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28615670/optic-disc-hemorrhage-and-lamina-cribrosa-defects-in-glaucoma-progression
#5
Hae-Young Lopilly Park, Jiyoung Lee, Younhea Jung, Chan Kee Park
Both disc hemorrhages (DH) and focal lamina cribrosa (LC) defects are recently considered as a progression factor in glaucoma. However, the clinical relevance of the presence of LC findings at the site of the DH has not yet been determined. We conducted a prospective study enrolling a total of 98 glaucoma eyes with DH and 37 OAG eyes with focal LC defect without DH to determine whether visual field (VF) progression differs according to the findings of the LC that had been evaluated by enhanced depth imaging (EDI) of optical coherence tomography (OCT) and its relationship with DH...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28614137/swept-source-optical-coherence-tomography-angiography-in-rickettsial-retinitis
#6
Rim Kahloun, Bechir Jelliti, Imen Ksiaa, Hager Ben Amor, Sonia Zaouali, Marco Lupidi, Salim Ben Yahia, Moncef Khairallah
PURPOSE: To report optical coherence tomography angiography findings in a patient with rickettsial retinitis. METHODS: A 29-year-old man complaining of acute blurring vision in the right eye associated with Rickettsia conorii infection underwent a comprehensive ocular examination, fluorescein angiography, spectral-domain optical coherence tomography, and swept-source optical coherence tomography angiography. RESULTS: Funduscopy showed two large areas of retinitis in the inferior macula along the distribution of the inferotemporal artery with associated retinal hemorrhages, retinal edema, and serous retinal detachment...
June 13, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28611153/effects-of-short-term-mild-hypercapnia-during-head-down-tilt-on-intracranial-pressure-and-ocular-structures-in-healthy-human-subjects
#7
Steven S Laurie, Gianmarco Vizzeri, Giovanni Taibbi, Connor R Ferguson, Xiao Hu, Stuart M C Lee, Robert Ploutz-Snyder, Scott M Smith, Sara R Zwart, Michael B Stenger
Many astronauts experience ocular structural and functional changes during long-duration spaceflight, including choroidal folds, optic disc edema, globe flattening, optic nerve sheath diameter (ONSD) distension, retinal nerve fiber layer thickening, and decreased visual acuity. The leading hypothesis suggests that weightlessness-induced cephalad fluid shifts increase intracranial pressure (ICP), which contributes to the ocular structural changes, but elevated ambient CO2 levels on the International Space Station may also be a factor...
June 2017: Physiological Reports
https://www.readbyqxmd.com/read/28611142/bilateral-persistent-fetal-vasculature-mimicker-of-retinoblastoma
#8
Jogender Kumar, Arushi Yadav
We describe a case of bilateral persistent fetal vasculature (PFV) in a 3-month-old boy who presented with bilateral white pupillary reflex and a possible diagnosis of retinoblastoma. On ultrasonography, there was an echogenic band in the posterior segment of both eyes which connected the posterior surface of the lens capsule to the optic disc. Colour Doppler revealed the presence of vascularity in the band along its entire length. No calcification or mass lesion was seen. These findings are diagnostic of PFV...
June 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28608186/incidence-of-glaucomatous-visual-field-loss-after-two-decades-of-follow-up-the-rotterdam-study
#9
Henriët Springelkamp, Roger C Wolfs, Wishal D Ramdas, Albert Hofman, Johannes R Vingerling, Caroline C Klaver, Nomdo M Jansonius
To determine the incidence of glaucomatous visual field loss (GVFL) two decades after the start of the Rotterdam Study, and to compare known risk factors for open-angle glaucoma (OAG) between different clinical manifestations of OAG. Of 6806 participants aged 55 years and older from the population-based Rotterdam Study, 3939 underwent visual field testing at baseline and at least one follow-up round. The ophthalmic examinations included optic disc assessment and measurements of intraocular pressure (IOP), refractive error, diastolic blood pressure (DBP), and height and weight...
June 12, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28607414/diagnostic-capability-of-pulsar-perimetry-in-pre-perimetric-and-early-glaucoma
#10
Kazunori Hirasawa, Natsumi Takahashi, Kazuhiro Matsumura, Masayuki Kasahara, Nobuyuki Shoji
This study aimed to compare the diagnostic capability of Pulsar perimetry (Pulsar) in pre-perimetric glaucoma (PPG) and early glaucoma (EG) with that of Flicker perimetry (Flicker) and spectral-domain optical conference tomography (SD-OCT). This prospective cross-sectional study included 25 eyes of 25 PPG patients, 35 eyes of 35 EG patients, and 42 eyes of 42 healthy participants. The diagnostic capability using the area under the curve (AUC) of the best parameter and agreement of detectability between structural and functional measurements were compared...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28607028/chemoenzymatic-synthesis-nanotization-and-anti-aspergillus-activity-of-optically-enriched-fluconazole-analogues
#11
Shashwat Malhotra, Seema Singh, Neha Rana, Shilpi Tomar, Priyanka Bhatnagar, Mohit Gupta, Suraj K Singh, Brajendra K Singh, Anil K Chhillar, Ashok K Prasad, Christophe Len, Pradeep Kumar, Kailash C Gupta, Anjani J Varma, Ramesh C Kuhad, Gainda L Sharma, Virinder S Parmar, Nigel G J Richards
Despite recent advances in diagnostic and therapeutic advances in antifungal research, aspergillosis still remains a leading cause of morbidity and mortality. One strategy to address this problem is to enhance the activity spectrum of known antifungals, and we now report the first successful application of Candida antarctica lipase (CAL) for the preparation of optically enriched fluconazole analogs. Anti-Aspergillus activity was observed for an optically enriched derivative, (-)-S-2-(2' ,4' -difluorophenyl)-1-hexyl-amino-3-(1‴,2‴,4‴) triazol-1‴-yl-propan-2-ol, which exhibits MIC values of 15...
June 12, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28606265/-the-fundus-manifestations-and-sd-oct-findings-of-patients-with-acute-vogt-koyanagi-harada-disease
#12
B Li, J J Ye, M F Zhang, D H Li
Objective: To conclude the characteristics of fundus appearance and spectral domain optical coherence tomography(SD-OCT) findings of patients with acute Vogt-Koyanagi-Harada (VKH) disease. Methods: The clinical data of 17 patients (34 eyes) diagnosed of acute VKH in Peking Union Medical College Hospital from Jan. 2012 to Dec. 2014 were studied retrospectively.Examinations included visual acuity, slit lamp, fundus, color fundus pictures, FFA and SD-OCT. Results: Eight men and 9 women were enrolled with mean age of (40...
June 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28604981/optic-disc-pit-maculopathy-after-prone-positioning-spine-surgery
#13
Marcos Ruiz-Sánchez, Maria E Rodríguez-González-Herrero, Jenifer Ruiz-Sará
PURPOSE: To report a case of optic disc pit maculopathy after spine surgery performed in the prone position. METHODS: Case report. RESULTS: A 32-year-old man underwent spine surgery for disc herniation repair. He complained of visual acuity loss immediately after the procedure. Optic disc maculopathy with internal limiting membrane detachment was found to be the cause. Vitrectomy was scheduled after a 12-month follow-up without resolution of the maculopathy...
June 9, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28604492/a-microstructural-investigation-of-disc-disruption-induced-by-low-frequency-cyclic-loading
#14
Meredith L Schollum, Kelly R Wade, Peter A Robertson, Ashvin Thambyah, Neil D Broom
STUDY DESIGN: Microstructural investigation of low frequency cyclic loading and flexing of the lumbar disc. OBJECTIVE: To explore micro-level structural damage in motion segments subjected to low frequency repetitive loading and flexing at sub-acute loads. SUMMARY OF BACKGROUND DATA: Cumulative exposure to mechanical load has been implicated in low back pain and injury. The mechanical pathways by which cyclic loading physically affects spine tissues remain unclear, in part due to the absence of high quality microstructural evidence...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28599324/morning-glory-disc-anomaly-associated-with-ipsilateral-optic-nerve-and-chiasm-thickening-three-cases-and-review-of-the-literature
#15
Chiara Doneda, Lorenzo Pinelli, Matteo Scaramuzzi, Jessica Galli, Elisa Fazzi, Cecilia Parazzini, Andrea Righini, Paolo Nucci
No abstract text is available yet for this article.
June 9, 2017: Neuropediatrics
https://www.readbyqxmd.com/read/28597519/feasibility-study-on-robot-assisted-retinal-vascular-bypass-surgery-in-an-ex%C3%A2-vivo-porcine-model
#16
Yi Qi Chen, Ji Wei Tao, Liang Li, Jian Bo Mao, Chen Ting Zhu, Ji Meng Lao, Yang Yang, Li-Jun Shen
PURPOSE: To describe a new robot-assisted surgical system for retinal vascular bypass surgery (RVBS) and to compare the success rate with freehand RVBS. METHODS: A robot-assisted system for retinal microsurgery was constructed to include two independent robotic arms. A 23-gauge light probe and an intraocular forceps were affixed to the arm end effectors to perform the intraocular manipulation. Harvested porcine eyes were introduced to be established animal models of closed-sky eyeballs after that pars plana vitrectomy using temporary keratoprosthesis was performed by a skilful surgeon...
June 9, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28597076/juxtapapillary-and-circumpapillary-choroidal-melanoma-globe-sparing-treatment-outcomes-with-iodine-125-notched-plaque-brachytherapy
#17
John V Hegde, Tara A McCannel, Colin A McCannel, James Lamb, Pin-Chieh Wang, Darlene Veruttipong, Robert Almanzor, D Jeffrey Demanes, Mitchell Kamrava
PURPOSE: Managing juxtapapillary and circumpapillary choroidal melanoma with brachytherapy is challenging because of technical complications with accurate plaque placement and high radiation toxicity given tumor proximity to the optic nerve. We evaluated our center's experience using ultrasound-guided, Iodine (I)-125 notched plaque brachytherapy for treating choroidal melanoma contiguous with (juxtapapillary) and at least partially surrounding the optic disc (circumpapillary). METHODS: All cases of choroidal melanoma treated with I-125 notched plaque brachytherapy at our center from September 2003-December 2013 were retrospectively reviewed...
June 9, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28595892/localization-of-optic-disc-and-fovea-in-retinal-images-using-intensity-based-line-scanning-analysis
#18
Ravi Kamble, Manesh Kokare, Girish Deshmukh, Fawnizu Azmadi Hussin, Fabrice Mériaudeau
Accurate detection of diabetic retinopathy (DR) mainly depends on identification of retinal landmarks such as optic disc and fovea. Present methods suffer from challenges like less accuracy and high computational complexity. To address this issue, this paper presents a novel approach for fast and accurate localization of optic disc (OD) and fovea using one-dimensional scanned intensity profile analysis. The proposed method utilizes both time and frequency domain information effectively for localization of OD...
April 27, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28595625/blood-flow-velocity-and-thickness-of-the-choroid-in-a-patient-with-chorioretinopathy-associated-with-ocular-blunt-trauma
#19
Yuri Ishikawa, Yuki Hashimoto, Wataru Saito, Ryo Ando, Susumu Ishida
BACKGROUND: Choroidal circulation hemodynamics in eyes with ocular blunt trauma has not been quantitatively examined yet. We quantitatively examined changes in choroidal blood flow velocity and thickness at the lesion site using laser speckle flowgraphy (LSFG) and enhanced depth imaging optical coherence tomography (EDI-OCT) in a patient with chorioretinopathy associated with ocular blunt trauma. CASE PRESENTATION: A 13-year-old boy developed a chorioretinal lesion with pigmentation extending from the optic disc to the superotemporal side in the right eye after ocular blunt trauma...
June 8, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28584935/evaluation-of-optic-nerve-head-parameters-and-retinal-nerve-fiber-layer-thickness-in-axial-myopia-using-sd-oct
#20
Heba Radi AttaAllah, Ismail Ahmed Nagib Omar, Ahmed Shawkat Abdelhalim
INTRODUCTION: The purpose of this research was to study the effect of increased axial myopia, in non-glaucomatous eyes, and its correlation with ONH parameters, and RNFL thickness, using Cirrus HD 4000 SD-OCT. METHODS: The myopia group included 86 eyes of 86 patients, while the control group involved 92 eyes of 92 patients, attending the Ophthalmology Outpatient Clinic in Minia University Hospital, between November 2013 and March 2015. ONH parameters and peripapillary RNFL thickness measurement were evaluated by using SD-OCT, selecting the standard optic disc cube 200 × 200...
June 5, 2017: Ophthalmology and Therapy
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