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https://www.readbyqxmd.com/read/28178303/differentiation-of-glaucomatous-optic-discs-with-different-appearances-using-optic-disc-topography-parameters-the-glaucoma-stereo-analysis-study
#1
Masaki Tanito, Koji Nitta, Maki Katai, Yasushi Kitaoka, Yu Yokoyama, Kazuko Omodaka, Toru Nakazawa
The Glaucoma Stereo Analysis Study (GSAS) is a multicenter collaborative study of the characteristics of glaucomatous optic disc morphology using a stereo fundus camera. Using GSAS dataset, the formulas for predicting different glaucomatous optic disc appearances were established. The GSAS dataset containing three-dimensionally-analyzed optic disc topographic parameters from 187 eyes with primary open-angle glaucoma was assessed with discrimination analyses to obtain formulas predictive of glaucomatous optic disc appearances: focal ischemic (FI); generalized enlargement (GE), myopic glaucomatous (MY), and senile sclerotic (SS)...
2017: PloS One
https://www.readbyqxmd.com/read/28125859/visual-field-assessment-in-high-myopia-with-and-without-tilted-optic-disc
#2
Nasser Shoeibi, Nasrin Moghadas Sharif, Ramin Daneshvar, Asieh Ehsaei
BACKGROUND: The aim was to evaluate the effect of the tilted optic disc on the visual field in highly myopic eyes. METHODS: A total of 58 eyes from 58 highly myopic individuals underwent detailed ophthalmic examination and were categorised into two groups according to the presence of a tilted optic disc. The visual field of 20 eyes (mean age of 28.95 ± 7.22 years) with tilted optic discs were compared with 38 eyes (mean age of 27.87 ± 6.08 years) of control subjects without tilted optic discs using the 30-2 SITA standard protocol with a Humphrey Field Analyzer - HFA II-i...
January 26, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28114308/association-of-myopic-deformation-of-optic-disc-with-visual-field-progression-in-paired-eyes-with-open-angle-glaucoma
#3
Yu Sawada, Masanori Hangai, Makoto Ishikawa, Takeshi Yoshitomi
PURPOSE: The influence of myopia on glaucoma progression remains unknown, possibly because of the multifactorial nature of glaucoma and difficulty in assessing a solo contribution of myopia. The purpose of this study is to investigate the association of myopia with visual field (VF) progression in glaucoma using a paired-eye design to minimize the influence of confounding systemic factors that are diverse among individuals. METHODS: This retrospective study evaluated 144 eyes of 72 subjects with open-angle glaucoma, with similar intra-ocular pressure between paired eyes, spherical equivalent (SE) ≤ -2 diopter (D), and axial length ≥ 24 mm...
2017: PloS One
https://www.readbyqxmd.com/read/28050537/spinopelvic-balance-evaluation-of-patients-with-degenerative-spondylolisthesis-l4l5-and-l4l5-herniated-disc-who-underwent-surgery
#4
Viviane Regina Hernandez Nunes, Charbel Jacob, Igor Machado Cardoso, José Lucas Batista, Marcus Alexandre Novo Brazolino, Thiago Cardoso Maia
OBJECTIVE: To correlate spinopelvic balance with the development of degenerative spondylolisthesis and disk herniation. METHODS: This was a descriptive retrospective study that evaluated 60 patients in this hospital, 30 patients with degenerative spondylolisthesis at the L4-L5 level and 30 with herniated disk at the L4-L5 level, all of whom underwent Surgical treatment. RESULTS: Patients with lumbar disk herniation at L4-L5 level had a mean tilt of 8...
November 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28046494/su-c-209-07-phantoms-for-digital-breast-tomosynthesis-imaging-system-evaluation
#5
D Jacobson, Y Liu
PURPOSE: Digital Breast Tomosynthesis (DBT) is gaining importance in breast imaging. There is a need for phantoms that can be used for image evaluation and comparison. Existing commercially available phantoms for DBT are expensive and may lack clinically relevant test objects. The purpose of this study is to develop phantoms for DBT evaluation. METHODS: Four phantoms have been designed and constructed to assess the image quality (IQ) of two DBT systems. The first contains a spiral of 0...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28003787/pseudoduplication-of-the-optic-disc-in-moderate-myopia
#6
Zeynep Eylül Ercan, Aylin Karalezli, Gokcen Coban
We report a case of optic disc pseudoduplication without pathological myopia. A 79-year-old woman presented with gradually decreased vision. Fundus examination showed macular drusen in both eyes and subretinal haemorrhage in the left eye. Both optic discs appeared to be tilted and the left optic disc was seen to be inferiorly duplicated. Pseudodoubling of the optic discs can be caused by optic disc and peripapillary chorioretinal colobomas and pathological myopia. Considering that our patient did not have enough axial length to merit a diagnosis of pathological myopia and no pathological fundus lesions typical of elongated sclera, we suggest that acquired pseudoduplication is not a condition unique to pathological myopia, but can occur in all myopic patients...
October 2016: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/27998660/prosthetic-dislocation-and-revision-after-primary-total-hip-arthroplasty-in-lumbar-fusion-patients-a-propensity-score-matched-pair-analysis
#7
Dean C Perfetti, Ran Schwarzkopf, Aaron J Buckland, Carl B Paulino, Jonathan M Vigdorchik
BACKGROUND: Lumbar-pelvic fusion reduces the variation in pelvic tilt in functional situations by reducing lumbar spine flexibility, which is thought to be important in maintaining stability of a total hip arthroplasty (THA). We compared dislocation and revision rates for patients with lumbar fusion and subsequent THA to a matched comparison cohort with hip and spine degenerative changes undergoing only THA. METHODS: We identified patients in New York State who underwent primary elective lumbar fusion for degenerative disc disease pathology and subsequent THA between January 2005 and December 2012...
November 23, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27989074/excellence-and-durability-a-normally-functioning-bj%C3%A3-%C3%A2-rk-shiley-flat-disc-prosthesis-42-years-post-implantation
#8
Armaan Shaikh, A Jamil Tajik
Mechanical heart valves have been used worldwide for more than 60 years. While the composition and design of the valves, and the surgical techniques employed to implant them, have changed and advanced over that time, some of the earlier mechanical heart valves showed such great durability that they are still functioning in patients today. One of the most often-used and long-lasting mechanical prostheses was the Björk-Shiley heart valve. While many versions of this valve were used during its 25 years of production, the most durable was the Björk-Shiley flat-disc valve...
March 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27982204/corneal-structure-in-tilted-disc-syndrome
#9
Abuzer Gunduz, Nihat Polat, Tongabay Cumurcu, ErsinErsan Demirel, Ercan Özsoy
Purpose: To evaluate the central corneal thickness (CCT), corneal volume (CV), and anterior and posterior corneal surfaces using the Scheimpflug imaging system in patients diagnosed with tilted disc syndrome (TDS). Methods: The study group (Group 1) and the control group (Group 2) comprised 35 eyes of 35 age-, sex-, and refraction-matched cases. All cases underwent a full ophthalmic examination that included cycloplegic refraction, axial ocular length measurement, and Scheimpflug imaging...
September 2016: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/27943601/surgical-repair-of-annulus-defect-with-biomimetic-multilamellar-nano-microfibrous-scaffold-in-a-porcine-model
#10
R Kang, H Li, Z Xi, S Ringgard, A Baatrup, K Rickers, M Sun, D Q S Le, M Wang, L Xie, Y Xie, M Chen, C Bünger
Annulus defect is associated with reherniation and disc degeneration after discectomy; currently there is no effective treatment that addresses this problem. The annulus is a hierarchical lamellar structure, where each lamella consists of aligned collagen fibers, which are parallel and tilted at 30° to the spinal axis. In this study, a biomimetic biodegradable scaffold consisting multi-lamella nano/microfibers, sharing nano-topography and micro-porosity similar to the native lamellar structure, was assessed in a porcine model, aided by sealing with fascia and medical glue and subsequent suture fixation...
December 11, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27935604/ocular-characteristics-associated-with-the-location-of-focal-lamina-cribrosa-defects-in-open-angle-glaucoma-patients
#11
H-Yl Park, Y S Hwang, C K Park
PurposeTo investigate the clinical characteristics according to the location of focal lamina cribrosa (LC) defects and its associated ocular features.Patients and methodsA total of 139 open-angle glaucoma patients underwent Spectralis optical coherence tomography (OCT) with enhanced depth imaging. Alterations in the contour of the LC were investigated to find focal LC defects. The location of the visible LC defect from the neural canal wall (far-peripheral and mid-peripheral) and clock-hour position (superotemporal, temporal and inferotemporal) were classified...
December 9, 2016: Eye
https://www.readbyqxmd.com/read/27898445/pathologic-myopia
#12
REVIEW
Kyoko Ohno-Matsui
Pathologic myopia (PM) is the only myopia that causes the loss of best-corrected visual acuity. The main reason for best-corrected visual acuity loss is complications specific to PM, such as myopic maculopathy, myopic traction maculopathy, and myopic optic neuropathy (or glaucoma). The meta-analyses of the PM study group (META-PM study) made a classification system for myopic maculopathy. On the basis of this study, PM has been defined as eyes having atrophic changes equal to or more severe than diffuse atrophy...
November 2016: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/27847073/impingement-of-single-tilting-disc-mitral-prosthesis-during-transcatheter-aortic-valve%C3%A2-replacement
#13
John J Squiers, Katherine R Hebeler, J Michael DiMaio, Patrick Ogbue, Molly Szerlip, William T Brinkman
An 80-year-old woman with a medical history of mitral valve replacement with single-tilting disc prosthesis underwent transcatheter aortic valve replacement (TAVR). The tilting disc was noted to have abnormal motion after re-ballooning of the TAVR valve. Cardiopulmonary bypass was initiated, and the procedure was converted to surgical aortic valve replacement. After removal of the TAVR valve, the tilting disc moved freely. Although TAVR in patients with mitral prostheses is technically feasible, particular caution is necessary, and postdeployment dilation should be avoided...
December 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27837279/optic-disc-and-peripapillary-retinal-nerve-fiber-layer-characteristics-associated-with-glaucomatous-optic-disc-in-young-myopia
#14
Jong Eun Lee, Kyung Rim Sung, Ji Min Park, Joo Young Yoon, Sung Yong Kang, Sung Bae Park, Hyung Jin Koo
PURPOSE: To explore optic disc and peripapillary retinal nerve fiber layer (RNFL) features associated with glaucomatous optic disc (GOD) in young myopia. METHODS: Presence of GOD, optic disc tilt, and disc torsion were determined using fundus photographs. If the measured disc tilt ratio was >1.3, the optic disc was classified as tilted. Optic disc torsion was defined as a >15° deviation in the long axis of the optic disc from the vertical meridian. The average and four quadrants RNFL thicknesses were assessed using spectral domain optical coherence tomography (SD-OCT)...
November 11, 2016: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/27820904/morphology-of-cyprid-attachment-organs-compared-across-disparate-barnacle-taxa-does-it-relate-to-habitat
#15
Hamad Al-Yahya, Hsi-Nien Chen, Benny K K Chan, Ryusuke Kado, Jens T Høeg
This study used morphometric analyses to compare the structure of the third antennular segment, also called the attachment organ, in cyprid larvae from cirripede species representing a diverse set of taxonomic groups. The aim was to investigate the degree of morphological variation in view of the diversity of habitats, settlement substrata, and modes of life found in the Cirripedia. In all cyprids the third segment features a flat surface (the attachment disc) covered with small cuticular villi thought to function in adhesion...
October 2016: Biological Bulletin
https://www.readbyqxmd.com/read/27816390/biomechanical-analysis-of-combining-head-down-tilt-traction-with-vibration-for-different-grades-of-degeneration-of-the-lumbar-spine
#16
Sicong Wang, Lizhen Wang, Yawei Wang, Chengfei Du, Ming Zhang, Yubo Fan
In recent years, a combination of traction and vibration therapy is usually used to alleviate low back pain (LBP) in clinical settings. Combining head-down tilt (HDT) traction with vibration was demonstrated to be efficacious for LBP patients in our previous study. However, the biomechanics of the lumbar spine during this combined treatment is not well known and need quantitative analysis. In addition, LBP patients have different grades of degeneration of the lumbar spinal structure, which are often age related...
January 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/27796669/vertical-asymmetry-of-lamina-cribrosa-tilt-angles-using-wide-bandwidth-femtosecond-mode-locked-laser-oct-effect-of-myopia-and-glaucoma
#17
Takuhei Shoji, Hiroto Kuroda, Masayuki Suzuki, Hisashi Ibuki, Makoto Araie, Shin Yoneya
PURPOSE: Morphological features of the lamina cribrosa (LC) and optic disc may be important in the pathogenesis of glaucoma and myopic neuropathy. We therefore performed a cross-sectional study of patients with glaucoma and myopic neuropathy to evaluate vertical asymmetry of LC tilt angles (LCTAs) from Bruch's membrane opening (BMO). MATERIAL AND METHODS: Forty-six control eyes and 35 primary open-angle glaucoma (POAG) eyes were included. A raster scanning protocol with 300 single B-scans (without averaging) were obtained using optical coherence tomography with a wide-bandwidth, femtosecond mode-locked (ML) laser...
January 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/27772574/karl-viktor-hall-from-in-situ-vein-bypass-to-the-tilting-disc-heart-valve-prosthesis
#18
John-Peder Escobar Kvitting, Odd R Geiran
In 1977, Karl Viktor Hall implanted a novel tilting disc heart valve prosthesis at Rikshospitalet in Oslo, Norway. The Medtronic-Hall valve was known for its excellent durability and low thrombogenicity. Hall popularized the use of the great saphenous vein in situ as an arterial shunt in the 1960s, made a metal stripper to lyse vein valves, and introduced electromagnetic flowmeters in vascular surgery. He performed the first coronary artery bypass graft in Scandinavia in 1969. Under his leadership the first heart transplantation and the first heart-lung transplantation were performed in Scandinavia by his successor Tor Frøysaker in 1983 and 1986, respectively...
2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27755347/optic-disc-characteristics-and-visual-field-progression-in-normal-tension-glaucoma-patients-with-tilted-optic-discs
#19
Youngkyo Kwun, Gyule Han, Yoon-Jung Choy, Jong Chul Han, Changwon Kee
PURPOSE OF THE STUDY: The purpose of the study was to evaluate the optic disc characteristics associated with visual field (VF) progression in normal tension glaucoma (NTG) eyes with tilted optic discs. METHODS: Sixty-six eyes of 66 NTG patients with tilted optic disc were included in this cross-sectional study, who were examined by at least 5 Humphrey 30-2 VFs. Glaucomatous VF progression was evaluated using pointwise linear regression. Optic nerve heads were scanned with enhanced-depth imaging optical coherence tomography (EDI-OCT), and evaluated for the focal lamina cribrosa (LC) defects and LC thicknesses...
October 14, 2016: Journal of Glaucoma
https://www.readbyqxmd.com/read/27753756/correlations-between-retinal-nerve-fiber-layer-thickness-and-axial-length-peripapillary-retinal-tilt-optic-disc-size-and-retinal-artery-position-in-healthy-eyes
#20
Takehiro Yamashita, Taiji Sakamoto, Naoya Yoshihara, Hiroto Terasaki, Minoru Tanaka, Yuya Kii, Kumiko Nakao
PURPOSE: To determine the correlations between the retinal nerve fiber layer thickness (RNFLT) and the axial length, peripapillary retinal tilt (PRT), and optic disc size, and retinal artery position. METHODS: A prospective, observational cross-sectional study of 119 healthy right eyes of 119 volunteers. All participants underwent comprehensive ophthalmologic examinations including peripapillary RNFLT imaging and measurements of the axial length. The RNFLT was determined by the TOPCON 3D OCT-1000, MARK II...
January 2017: Journal of Glaucoma
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