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https://www.readbyqxmd.com/read/28323395/development-of-a-didactical-training-concept-for-peer-tutors-in-gross-anatomy
#1
Simone Alvarez, Christoph Nikendei, Jobst-Hendrik Schultz
Even though peer tutors are often used in gross anatomy courses, research in the field is rather a subject of the last two decades. This is especially true about the didactical challenges these types of peer tutors experience during their tutorials and about how they are prepared for the task. The aim of the presented study was to learn about the training needs of the tutors, and to subsequently design, implement, and evaluate a didactical training concept. A qualitative design was chosen to examine how tutors can best be prepared for tutorials of gross anatomy...
March 21, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28316111/pattern-separation-in-the-hippocampus-through-the-eyes-of-computational-modeling
#2
REVIEW
Spyridon Chavlis, Panayiota Poirazi
Pattern separation is a mnemonic process that has been extensively studied over the years. It entails the ability -of primarily hippocampal circuits- to distinguish between highly similar inputs, via generating different neuronal activity (output) patterns. The dentate gyrus in particular has long been hypothesized to implement pattern separation by detecting and storing similar inputs as distinct representations. The ways in which these distinct representations can be generated have been explored in a number of theoretical and computational modelling studies...
March 18, 2017: Synapse
https://www.readbyqxmd.com/read/28291204/-staged-complex-treatment-of-paralytic-lagophthalmos-case-report
#3
M B Gushchina, S A Mal'kov, E V Kovshun, N S Yuzhakova
Paralytic lagophthalmos, resulting from facial nerve palsy, is a difficult medical and social issue that requires cooperation of different specialists. Complications that arise in paralytic lagophthalmos may cause significant vision loss and even eye loss. Various techniques of paralytic lagophthalmos correction are used to protect the cornea and restore eyelid anatomy and functions. These comprise palliative (conservative), surgical, and alternative treatments (such as botulinum toxin type A therapy). Surgical treatment of paralytic lagophthalmos patients often has to be staged and complex...
2017: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/28277482/the-role-of-prosthesis-spacer-for-ocular-prostheses
#4
Luiza Alencar De Andrade Figueiredo, Aline Araújo Sampaio, Samilly Evangelista Souza, Fernando José Rigolin Ferreira, Edmur Pereira Buzzá, Celia Marisa Rizzatti-Barbosa
Eye defects can lead to emotional, psychological, and social changes, impacting negatively the quality of life of the patient. When these structures cannot be satisfactorily repaired by reconstructive surgery, the prosthetic rehabilitation is the better treatment option to restore lost ocular anatomy and promote the social integration of the individual. The aim of this clinical report is to report and discuss a case of ocular prosthesis confection eviscerated patient with opening limitation eyelid and shortening of the distance between palpebral commissure, to obtain a more natural and comfortable to the patient ocular rehabilitation...
March 8, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28223180/biomechanical-aspects-of-axonal-damage-in-glaucoma-a-brief-review
#5
REVIEW
Cheri Stowell, Claude Burgoyne, Ernst R Tamm, C Ross Ethier
The biomechanical environment within the optic nerve head (ONH) is complex and is likely directly involved in the loss of retinal ganglion cells (RGCs) in glaucoma. Unfortunately, our understanding of this process is poor. Here we describe factors that influence ONH biomechanics, including ONH connective tissue microarchitecture and anatomy; intraocular pressure (IOP); and cerebrospinal fluid pressure (CSFp). We note that connective tissue factors can vary significantly from one individual to the next, as well as regionally within an eye, and that the understanding of ONH biomechanics is hindered by anatomical differences between small-animal models of glaucoma (rats and mice) and humans...
February 18, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28220619/the-palatal-interpterygoid-vacuities-of-temnospondyls-and-the-implications-for-the-associated-eye-and-jaw-musculature
#6
Florian Witzmann, Ingmar Werneburg
A diagnostic feature of temnospondyls is the presence of an open palate with large interpterygoid vacuities, unlike the closed palate of most other early tetrapods, in which the vacuities are either slit-like or completely absent. Attachment sites on neurocranium and palatal bones in temnospondyls allow the reconstruction of a powerful m. retractor bulbi and a large, sheet-like m. levator bulbi that formed the elastic floor of the orbit. This muscle arrangement indicates that temnospondyls were able to retract the eyeballs through the interpterygoid vacuities into the buccal cavity, like extant frogs and salamanders...
February 21, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28205422/ophthalmologic-wax-models-as-an-educational-tool-for-18th-century-vision-scientists
#7
Fabio Zampieri, Francesco Comacchio, Alberto Zanatta
The Medical Faculties of the University of Padua (Italy) and the University of Vienna (Austria) preserved two series of wax models, made by the Austrian Johann Nepomuk Hoffmayr at the beginning of the 19th century. These models were created in a period of evolution of both medical specialties and organ pathology, which brought morbid organs at the centre of medical investigation. Ceroplastic was considered a useful tool for didactic and research, as it provided a three-dimensional realistically coloured reproduction of organic lesions...
February 16, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28196403/morphologic-patterns-formed-by-the-anomalous-fibers-occurring-along-the-anterior-capsule-of-the-crystalline-lens-in-people-with-the-long-anterior-zonule-trait
#8
Daniel K Roberts, Yongyi Yang, Christina E Morettin, Tricia L Newman, Mary F Roberts, Jacob T Wilensky
People with the long anterior zonule (LAZ) trait, which may have prevalence near 2%, have zonular fibers that extend more central than usual along the anterior capsule of the crystalline lens. The anomalous fibers can be observed in vivo with clinical slit lamp biomicroscopy after pharmacologic pupil dilation, and although minimally studied, the LAZ trait may have importance to glaucoma, retinal degeneration, and cataract surgery. To further characterize LAZ morphology, a custom computer program was used to trace LAZ fibers seen on retro-illumination photos acquired during previous study at an academic, urban eye care facility in Chicago, IL...
February 14, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28169918/bilateral-blebs-secondary-to-spontaneous-scleral-perforations
#9
Ester Fernández López, Alexander Poon, Andrew Huhtanen, Richard Lindsay, Catherine Green
PURPOSE: To report an unusual case of bilateral spontaneous scleral perforations. METHODS: A 34-year-old woman presented with bilateral conjunctival blebs and decreased vision in both eyes. There was no history of ocular trauma or surgery and no previous ophthalmic or systemic conditions that may have contributed to the scleral perforations. RESULTS: Best-corrected visual acuity was 20/40 in both eyes and intraocular pressures were 6 mm Hg in the right and 5 mm Hg in the left...
February 6, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28168271/the-oculist-s-eye-connections-between-cataract-couching-anatomy-and-visual-theory-in-the-renaissance
#10
Tawrin Baker
No abstract text is available yet for this article.
January 1, 2017: Journal of the History of Medicine and Allied Sciences
https://www.readbyqxmd.com/read/28149147/craniofacial-characteristics-of-thalassemia-major-patients
#11
Sacide Karakas, Ayfer Metin Tellioglu, Mehmet Bilgin, Imran Kurt Omurlu, Sercin Caliskan, Salih Coskun
OBJECTIVE: Thalassemias major are the most common autosomal recessive disorders; they are characterized by anomalies in the synthesis of the beta chains of hemoglobin and are often associated with varying degrees of craniofacial anomalies. The purpose of this study was to evaluate the craniofacial dimensions of β-thalassemia patients and to identify differences by comparing them to those of a control group. MATERIALS AND METHODS: The study comprised 43 thalassemia major patients and 26 age- and sex- matched healthy control subjects...
October 2016: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/28126379/use-of-eye-tracking-as-an-innovative-instructional-method-in-surgical-human-anatomy
#12
María Luísa Sánchez-Ferrer, María Dolores Grima-Murcia, Francisco Sánchez-Ferrer, Ana Isabel Hernández-Peñalver, Eduardo Fernández-Jover, Francisco Sánchez Del Campo
OBJECTIVE: Tobii glasses can record corneal infrared light reflection to track pupil position and to map gaze focusing in the video recording. Eye tracking has been proposed for use in training and coaching as a visually guided control interface. The aim of our study was to test the potential use of these glasses in various situations: explanations of anatomical structures on tablet-type electronic devices, explanations of anatomical models and dissected cadavers, and during the prosection thereof...
January 23, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28123247/anterior-segment-changes-on-ultrasound-biomicroscopy-after-intravitreal-anti-vascular-endothelial-growth-factor-injection
#13
H S Trehan, Jaya Kaushik, Atul Rangi, A S Parihar, P Vashisht, J K S Parihar
BACKGROUND: Intravitreal injections are standard of care today and have the potential to change the anatomy of the anterior segment of the eye. This research was undertaken to evaluate the changes in anterior segment anatomy after intravitreal anti vascular endothelial growth factor (anti VEGF) injections. METHODS: We conducted a prospective interventional case series at a quaternary care center where patients undergoing intravitreal injection had pre and post injection ultrasound biomicroscopy (UBM) and intraocular pressure (IOP) measurement after intravitreal anti VEGF injection of 0...
January 2017: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/28122462/current-treatment-strategies-and-nanocarrier-based-approaches-for-the-treatment-and-management-of-diabetic-retinopathy
#14
Kousalya Selvaraj, Kuppusamy Gowthamarajan, Veera Venkata Satyanarayana Reddy Karri, Uday K Barauah, Vanka Ravisankar, Gifty M Jojo
Diabetic retinopathy (DR) is a leading cause of blindness in all working age groups which contribute to patient's quality of life. Considering the anatomy and physiology of barriers in the eye, the treatment and management of pathologic ocular neovascularization in the posterior segment of the eye in DR is a challenging task. The current and emerging treatment strategies are discussed in this review for better understanding and treatment of the DR. Challenges in conventional therapy and recent developments in nanocarrier based approaches (polymeric, lipid nanoparticles, liposomes and dendrimers) and their advantages in targeting ocular tissues were also discussed in this review...
January 25, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28110374/morphological-description-of-limbal-epithelium-searching-for-stem-cells-crypts-in-the-dog-cat-pig-cow-sheep-and-horse
#15
M Patruno, A Perazzi, T Martinello, A Blaseotto, E Di Iorio, I Iacopetti
The cornea provides protection and transparency to the eye, allowing an optimal sharpness view. In some pathological conditions the cornea is able to regenerate thanks to the presence of a stem cells reservoir present at the level of the transition area between cornea and sclera (limbus). Corneal cell therapies in Veterinary Medicine are really limited due to the lacking of knowledge about the anatomy of the limbal area, the putative presence of stem cells and their identification in domestic species. The aim of this study was to provide an overview of the main distinctive structural features of the sclero-corneal junction and conjunctival-corneal junction areas in some species of veterinary importance, using optic microscope observations of histological sections...
January 21, 2017: Veterinary Research Communications
https://www.readbyqxmd.com/read/28109903/an-apposition-compound-eye-adapted-for-nocturnal-vision-in-the-moth-midge-clogmia-albipunctata-williston-diptera-psychodidae
#16
Lei-Po Jia, Ai-Ping Liang
Morphology and anatomy, dark/light adaptational changes and optics of the compound eyes of the nocturnal moth midge Clogmia albipunctata (Williston) are studied. Its apposition type of eye consists of approximately 260 well-separated ommatidia. Each ommatidium features a biconvex corneal lens covered by corneal nipples measuring around 17nm in height; a crystalline cone of the acone type; and an open (laterally fused) rhabdom formed by eight retinular cells (R1-R8). The corneal lens, whose biological significance is addressed, is composed of a thick yellow-coloured inner lens unit (ILU) surrounded by a thin, colourless outer lens unit (OLU)...
January 18, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28108399/fine-structure-of-the-anterior-median-eyes-of-the-funnel-web-spider-agelena-labyrinthica-araneae-agelenidae
#17
Wolfgang-D Schröer
Only few electron microscopic studies exist on the structure of the main eyes (anterior median eyes, AME) of web spiders. The present paper provides details on the anatomy of the AME in the funnel-web spider Agelena labyrinthica. The retina consists of two separate regions with differently arranged photoreceptor cells. Its central part has sensory cells with rhabdomeres on 2, 3, or 4 sides, whereas those of the ventral retina have only two rhabdomeres on opposite sides. In addition, the rhabdomeres of the ventral retina are arranged in a specific way: Whereas in the most ventral part they form long tangential rows, those towards the center are detached and are arranged radially...
February 10, 2017: Arthropod Structure & Development
https://www.readbyqxmd.com/read/28106706/intravitreal-ocriplasmin-in-clinical-practice-predictors-of-success-visual-outcomes-and-complications
#18
Henry L Feng, Daniel B Roth, Aisha Hasan, Howard F Fine, H Matthew Wheatley, Jonathan L Prenner, Sumit P Shah, Kunjal K Modi, William J Feuer
PURPOSE: To investigate predictors of success, visual outcomes, and complications of intravitreal ocriplasmin for the treatment of symptomatic vitreomacular adhesion in a clinical care setting. METHODS: Retrospective chart review of 49 consecutive eyes of 47 patients who received intravitreal ocriplasmin. Spectral domain optical coherence tomography scans were examined for vitreomacular traction (VMT) release, full-thickness macular hole (FTMH) closure, and other changes in retinal anatomy...
January 18, 2017: Retina
https://www.readbyqxmd.com/read/28088931/development-of-medical-treatment-for-eye-injuries-in-the-mainland-of-china-over-the-past-decade
#19
Chang-Guan Wang, Zhi-Zhong Ma
In the article, the development of medical treatment for eye injuries in the mainland of China was reviewed. According to the data provided in Eye Injury Vitrectomy Study (EIVS), 27% of 72 eyes with no light perception (NLP) gained recovery in term of antomy and visual function. Vitrectomy initiated at more than 4 weeks after open eye injury is an independent risk factor for developing PVR. Prognosis of anatomy and visual function of the injured eye with PVR is markedly worse than that without PVR. Serious injuries of ciliary body, choroid and retina are three key parts of the eye with NLP...
December 1, 2016: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28048573/su-f-t-423-automating-treatment-planning-for-cervical-cancer-in-low-and-middle-income-countries
#20
K Kisling, L Zhang, J Yang, A Jhingran, P Balter, R McCarroll, B Beadle, R Howell, K Schmeler, L Court
PURPOSE: To develop and test two independent algorithms that automatically create the photon treatment fields for a four-field box beam arrangement, a common treatment technique for cervical cancer in low- and middle-income countries. METHODS: Two algorithms were developed and integrated into Eclipse using its Advanced Programming Interface:3D METHOD: We automatically segment bony anatomy on CT using an in-house multi-atlas contouring tool and project the structures into the beam's-eye-view...
June 2016: Medical Physics
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