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https://www.readbyqxmd.com/read/27898445/pathologic-myopia
#1
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
#2
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
#3
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
#4
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
#5
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...
November 2, 2016: 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
#6
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...
October 28, 2016: 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
#7
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...
November 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
#8
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...
November 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
#9
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...
October 6, 2016: Journal of Glaucoma
https://www.readbyqxmd.com/read/27733169/pedicle-subtraction-osteotomy-and-disc-resection-with-cage-placement-in-post-traumatic-thoracolumbar-kyphosis-a-retrospective-study
#10
Wenhao Hu, Bin Wang, Hongyu Run, Xuesong Zhang, Yan Wang
BACKGROUND: It is estimated that upwards of 50,000 individuals suffer traumatic fracture of the spine each year, and the instability of the fractured vertebra and/or the local deformity results in pain and, if kyphosis increases, neurological impairment can occur. There is a significant controversy over the ideal management. The purpose of the study is to present clinical and radiographic results of pedicle subtraction osteotomy and disc resection with cage placement in correcting post-traumatic thoracolumbar kyphosis...
October 12, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27714512/optic-disc-tilt-direction-affects-regional-visual-field-progression-rates-in-myopic-eyes-with-open-angle-glaucoma
#11
Jong Rak Lee, Jiyun Lee, Jong-Eun Lee, Jin Young Lee, Michael S Kook
PURPOSE: To compare global and regional visual field (VF) progression rates and determine clinical factors associated with rapid VF progression in myopic patients with open-angle glaucoma (OAG) with different disc tilt directions. METHODS: The medical records of 182 eyes from 182 myopic OAG patients with progressive VF deterioration during follow-up were analyzed. The rates of change in the mean thresholds of the global and regional VF areas of the horizontal and vertical disc tilt (HDT and VDT) groups were compared using a linear mixed model after controlling for confounding covariates...
October 6, 2016: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/27704285/cobb-1-versus-cobb-to-cobb-anterior-fusion-for-adolescent-idiopathic-scoliosis-lenke-5c-curves-a-radiological-comparative-study
#12
Arnaud Dubory, Lotfi Miladi, Brice Ilharreborde, Jean-Marie Gennari, Jihane Rouissi, Christophe Glorion, Charles Henri Flouzat Lachaniette, Thierry Odent
PURPOSE: Anterior fusion is a well-established procedure for the treatment of Lenke 5C adolescent idiopathic scoliosis (AIS). This retrospective study aimed to assess preoperative and postoperative radiographic differences between the conventional anterior fusion and anterior short fusions (ASF) in Lenke 5C AIS. METHODS: Radiographic data of 42 consecutive cases of Lenke 5C AIS, which were surgically treated through anterior segmental fusion, were analyzed retrospectively...
October 4, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27648303/evaluation-of-anterior-segment-s-structures-in-tilted-disc-syndrome
#13
Ercan Ozsoy, Abuzer Gunduz, Ersin Ersan Demirel, Tongabay Cumurcu
Purpose. To evaluate anterior segment's structures by Pentacam in patients with tilted disc syndrome (TDS). Methods. Group 1 included forty-six eyes of forty-six patients who have the TDS. Group 2 including forty-six eyes of forty-six cases was the control group which was equal to the study group in age, gender, and refraction. A complete ophthalmic examination was performed in both groups. All cases were evaluated by Pentacam. The axial length (AL) of eyes was measured by ultrasound. Quantitative data obtained from these measurements were compared between two groups...
2016: Journal of Ophthalmology
https://www.readbyqxmd.com/read/27604684/tracheid-cell-wall-structures-and-locations-of-1%C3%A2-%C3%A2-%C3%A2-4-%C3%AE-d-galactans-and-1%C3%A2-%C3%A2-%C3%A2-3-%C3%AE-d-glucans-in-compression-woods-of-radiata-pine-pinus-radiata-d-don
#14
Miao Zhang, Ramesh R Chavan, Bronwen G Smith, Brian H McArdle, Philip J Harris
BACKGROUND: Compression wood (CW) forms on the underside of tilted stems of coniferous gymnosperms and opposite wood (OW) on the upperside. The tracheid walls of these wood types differ structurally and chemically. Although much is known about the most severe form of CW, severe CW (SCW), mild CWs (MCWs), also occur, but less is known about them. In this study, tracheid wall structures and compositions of two grades of MCWs (1 and 2) and SCW were investigated and compared with OW in slightly tilted radiata pine (Pinus radiata) stems...
2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27594747/challenges-in-early-glaucoma-detection
#15
Edita Dervisevic, Suzana Pavljasevic, Almir Dervisevic, Sanja Sefic Kasumovic
INTRODUCTION: Glaucoma is the most common optic neuropathy which is characterized by progressive loss of retinal ganglion cells, the excavation of the optic nerve head, associated with defects in the visual field. It is not a disease, but the final result of united and yet completely unidentified cellular and subcellular processes and effects of many factors responsible for changes in retinal ganglion cells leading to their accelerated apoptosis. METHODS: This is a prospective-retrospective, comparative, randomized clinical trial that included 150 patients, 97 were female and 53 male...
June 2016: Medical Archives
https://www.readbyqxmd.com/read/27571303/association-of-myopic-optic-disc-deformation-with-visual-field-defects-in-paired-eyes-with-open-angle-glaucoma-a-cross-sectional-study
#16
Yu Sawada, Masanori Hangai, Makoto Ishikawa, Takeshi Yoshitomi
PURPOSE: To examine the association of myopia with the visual field (VF) defects in open-angle glaucoma (OAG) using paired eyes to eliminate the effect of unknown confounding factors that are diverse among individuals. METHODS: One hundred eighteen eyes of 59 subjects with myopia (spherical equivalent [SE] ≥ -2 diopter [D] and axial length ≥ 24.0 mm) whose intra-ocular pressure between paired eyes was similar and the mean deviation (MD) of the Humphrey VF test differed by more than 6 dB were included...
2016: PloS One
https://www.readbyqxmd.com/read/27571013/peripapillary-nerve-fiber-elevation-in-young-healthy-eyes
#17
Takehiro Yamashita, Taiji Sakamoto, Naoya Yoshihara, Hiroto Terasaki, Minoru Tanaka, Yuya Kii, Kumiko Nakao
PURPOSE: Eyes with a peripapillary nerve fiber elevation (pNFE) are those with a discrepancy between the optic disc margin in a color fundus photograph and the Bruch's membrane opening in an optical coherent tomographic (OCT) cross-sectional image. The purpose of this study was to determine the prevalence of pNFE in young healthy eyes, and to compare the axial length and optic disc tilt between pNFE and non-pNFE groups. METHODS: This was a prospective, observational, cross-sectional study of 117 right eyes...
August 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27562589/sagittal-balance-parameters-correlate-with-spinal-conformational-type-and-mri-changes-in-lumbar-degenerative-disc-disease-results-of-a-retrospective-study
#18
Mihai Mardare, Manuel Oprea, Iulian Popa, Ancuța Zazgyva, Marius Niculescu, Dan V Poenaru
PURPOSE: Spinopelvic parameters can be useful in identifying risk factors for lumbar degenerative disc disease, but few studies assess patients with single-level disc herniation and most do not evaluate symptoms. This comparative retrospective study was aimed to analyse spinopelvic parameters, symptoms and MRI changes in patients with single-level lumbar disc herniation undergoing conservative or surgical treatment. METHODS: Patients with clinical and radiological assessment (Japanese Orthopaedic Association Score) and an MRI evaluation of the lumbar spine were identified and divided into two groups: surgically treated (group A) and not requiring surgery (group B)...
October 2016: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/27552518/patterns-of-damage-in-young-myopic-glaucomatous-appearing-patients-with-different-optic-disc-tilt-direction
#19
Jong Eun Lee, Jiyun Lee, Jin Young Lee, Michael S Kook
PURPOSE OF THE STUDY: The purpose of the study was to compare patterns of damage in young myopic glaucomatous-appearing patients with horizontal disc tilt (HDT) to a control group of patients with vertical disc tilt (VDT). PATIENTS AND METHODS: We consecutively enrolled 104 eyes of 104 young, myopic, glaucomatous-appearing patients without or with early visual field (VF) defects. The eyes were divided into those with HDT or VDT. The clinical characteristics of the peripapillary retinal nerve fiber layer (pRNFL) and VF damage were compared between groups after matching for age, refractive error, and neural rim area using spectral-domain optical coherence tomography and standard automated perimetry 24-2 VF testing...
August 22, 2016: Journal of Glaucoma
https://www.readbyqxmd.com/read/27551928/optical-coherence-tomography-and-biometry-in-high-myopia-with-tilted-disc
#20
Nasrin Moghadas Sharif, Nasser Shoeibi, Asieh Ehsaei, Edward A H Mallen
PURPOSE: The purpose of this study was to compare retinal thickness and biometric parameters between highly myopic eyes with and without tilted optic discs. METHODS: A total of 60 eyes from 60 highly myopic individuals (defined as a mean spherical equivalent refraction of -6.00 D or greater and axial length ≥26 mm) underwent detailed ophthalmic examination. Twenty-one eyes (13 females and 8 males; mean age: 29 ± 7 years) with tilted optic discs were recruited and compared with 39 eyes (23 females and 16 males; mean age: 28 ± 6 years) of control subjects without tilted optic discs using spectral domain optical coherence tomography (OCT) and the Lenstar biometer...
August 22, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
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