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https://www.readbyqxmd.com/read/29454106/binocular-vision-adaptively-suppresses-delayed-monocular-signals
#1
Bruno Richard, Eva Chadnova, Daniel H Baker
A neutral density filter placed before one eye will produce a dichoptic imbalance in luminance, which attenuates responses to visual stimuli and lags neural signals from retina to cortex in the filtered eye. When stimuli are presented to both the filtered and unfiltered eye (i.e., binocularly), neural responses show little attenuation and no lag compared with their baseline counterpart. This suggests that binocular visual mechanisms must suppress the attenuated and delayed input from the filtered eye; however, the mechanisms involved remain unclear...
February 14, 2018: NeuroImage
https://www.readbyqxmd.com/read/29451999/evaluation-of-the-effects-of-the-occlu-pad-for-the-management-of-anisometropic-amblyopia-in-children
#2
Yo Iwata, Tomoya Handa, Hitoshi Ishikawa, Toshiaki Goseki, Nobuyuki Shoji
PURPOSE: In recent years, amblyopia treatment device that can be used with both eyes open have been reported. The Occlu-pad is a device that can present images of tablet terminals to one eye only under binocular open conditions. Till date, no study has reported the effectiveness of Occlu-pad training for anisometropic amblyopia in a series of cases. In the present study, we evaluated the effectiveness of the Occlu-pad for the management of anisometropic amblyopia without the use of occlusion therapy (eyepatch)...
February 16, 2018: Current Eye Research
https://www.readbyqxmd.com/read/29450393/management-of-diplopia
#3
REVIEW
Daniela Adriana Iliescu, Cristina Mihaela Timaru, Nicolae Alexe, Elena Gosav, Algerino De Simone, Mehdi Batras, Cornel Stefan
Diplopia (seeing double) is an ophthalmologic complaint found mainly in elder patients. It can have both ocular and neurological causes. A careful history and clinical examination must detail the type of diplopia (monocular/ binocular), onset, and progression, associated and relieving factors. In case of monocular diplopia, refraction and biomicroscopic examination of the ocular media are mandatory. The cause of ocular misalignment for binocular diplopia must be determined and life-threatening conditions (such as posterior communicating artery aneurysm) must imply an immediate treatment...
July 2017: Romanian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29450383/eyesight-quality-and-computer-vision-syndrome
#4
Camelia Margareta Bogdănici, Diana Elena Săndulache, Corina Andreea Nechita
The aim of the study was to analyze the effects that gadgets have on eyesight quality. A prospective observational study was conducted from January to July 2016, on 60 people who were divided into two groups: Group 1 - 30 middle school pupils with a mean age of 11.9 ± 1.86 and Group 2 - 30 patients evaluated in the Ophthalmology Clinic, "Sf. Spiridon" Hospital, Iași, with a mean age of 21.36 ± 7.16 years. The clinical parameters observed were the following: visual acuity (VA), objective refraction, binocular vision (BV), fusional amplitude (FA), Schirmer's test...
April 2017: Romanian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29445760/corneal-functional-optical-zone-under-monocular-and-binocular-assessment
#5
Samuel Arba Mosquera, Diego de Ortueta, Shwetabh Verma
Background: In this retrospective randomized case series, we compared bilateral symmetry between OD and OS eyes, intercorneal differences and Functional Optical Zone (FOZ) of the corneal aberrations. Methods: Sixty-seven normal subjects (with no ocular pathology) who never had any ocular surgery were bilaterally evaluated at Augenzentrum Recklinghausen (Germany). In all cases, standard examinations and corneal wavefront topography (OPTIKON Scout) were performed...
2018: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/29444444/vertical-disconjugacy-during-reading-in-dyslexic-and-non-dyslexic-children
#6
Nathalie Goulème, Cynthia Lions, Christophe-Loïc Gérard, Hugo Peyre, Hung Thai-Van, Maria Pia Bucci
PURPOSE: The objective of this study was to explore vertical binocular coordination in dyslexic and non-dyslexic children during saccades and post-saccadic fixation period while reading a text. METHODS: Binocular eye movements were recorded by an infrared system (Mobile T2® , SuriCog) in thirty-six dyslexic children from 7.3 to 13.6 years of age (mean age: 10.4 ± 0.3 years) who were asked to silently read a four-line text during binocular viewing. Data were compared to those of thirty-six age-matched non-dyslexic children...
February 11, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29442555/direct-intertectal-inputs-are-an-integral-component-of-the-bilateral-sensorimotor-circuit-for-behavior-in-xenopus-tadpoles
#7
Abigail C Gambrill, Regina L Faulkner, Hollis T Cline
The circuit controlling visually-guided behavior in non-mammalian vertebrates, like Xenopus tadpoles, includes retinal projections to the contralateral optic tectum, where visual information is processed, and tectal motor outputs projecting ipsilaterally to hindbrain and spinal cord. Tadpoles have an intertectal commissure whose function is unknown, but it might transfer information between the tectal lobes. Differences in visual experience between the two eyes have profound effects on the development and function of visual circuits in animals with binocular vision, but the effects on animals with fully-crossed retinal projections are not clear...
February 14, 2018: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29433472/factors-associated-with-developing-a-fear-of-falling-in-subjects-with-primary-open-angle-glaucoma
#8
Sayaka Adachi, Kenya Yuki, Sachiko Awano-Tanabe, Takeshi Ono, Daisuke Shiba, Hiroshi Murata, Ryo Asaoka, Kazuo Tsubota
BACKGROUND: To investigate the relationship between clinical risk factors, including visual field (VF) defects and visual acuity, and a fear of falling, among patients with primary open-angle glaucoma (POAG). METHODS: All participants answered the following question at a baseline ophthalmic examination: Are you afraid of falling? The same question was then answered every 12 months for 3 years. A binocular integrated visual field was calculated by merging a patient's monocular Humphrey field analyzer VFs, using the 'best sensitivity' method...
February 13, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29429297/-preliminary-study-on-reading-speed-test-with-irest-for-normally-sighted-young-chinese-readers
#9
Q H Wang, X T Ren, J Hu, Q Li, S S Cui, Y Y Zou
Objective: To assess the reading speed of normally-sighted young Chinese with the International Reading Speed Texts (IReST) Chinese version, and evaluate the normal range of the texts, the equivalence of the ten different texts and the potential clinical value. Methods: Evaluation of diagnostic techniques. Participants aged 18 to 35 years old with junior high school or above education and best corrected visual acuity no less than 0.6 were recruited. Best corrected visions of both eyes and binocular vision were tested, and ocular and nervous system diseases were excluded with slit-lamp microscope and funduscope...
February 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29429288/-study-on-the-difference-of-binocular-accommodative-response-between-atients-with-intermittent-exotropia-under-different-viewing-condition
#10
P C Shen, Y Zhang, Y Liu, J Jiang, J J Xu, H L Lin, D Xu
Objective: To evaluate the accommodative response of patients with intermittent exotropia (IXT) objectively, and study the changes of accommodative response of intermittent exotropia patients when maintaining binocular fusion. Methods: The prospective cohort study was used in this study. Twenty-four patients diagnosed with basic intermittent exotropia who visited the eye hospital of Wenzhou Medical University during October 2016 through January 2017 together with 24 normal volunteers were included, the 48 participants aged from 10 to 27 years old...
January 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29428822/intranasal-bdnf-administration-promotes-visual-function-recovery-in-adult-amblyopic-rats
#11
REVIEW
Gabriele Sansevero, Laura Baroncelli, Manuela Scali, Alessandro Sale
Amblyopia is the most common cause of visual impairment in one eye, with a prevalence of 1-5% in the world population. While amblyopia can be efficiently treated in children, it becomes irreversible in adults, due to the decline in neural plasticity past the end of the visual cortex critical period. Accordingly, no pharmacological approaches are available to rescue visual functions in adult amblyopic subjects. We report that non-invasive intranasal infusion of BDNF increased levels of this neurotrophic factor in V1 and induced a recovery of visual acuity, ocular dominance and visual depth perception in adult amblyopic rats, both in reverse-occluded animals and in those with unrestricted binocular sight...
February 8, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29423423/rapid-reversal-of-complete-binocular-blindness-with-high-dose-corticosteroids-and-lumbar-drain-in-a-solid-organ-transplant-recipient-with-cryptococcal-meningitis-and-immune-reconstitution-syndrome-first-case-study-and-literature-review
#12
Zoe Weiss, Nihaal Mehta, Su Nandar Aung, Michael Migliori, Dimitrios Farmakiotis
Blindness is a rare, devastating, usually permanent complication of cryptococcal meningitis (CM). We present the first case of complete vision loss in a solid organ transplant recipient with CM treated with placement of a lumbar drain who had a dramatic visual recovery that started after 3 doses of high-dose steroids.
February 2018: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/29422686/binocular-vision-in-the-total-situation
#13
Christo Joannidis
This paper investigates the concept of "total situation" which, even though introduced into psychoanalytic thinking via sister disciplines, such as sociology, the neurosciences, etc., has gradually acquired a relatively prominent position in current therapeutic practice. It is used as a metaphor for the envelopment of the unfolding transferential and related events in the analytic process. Irrespective of whether one focuses on the individual analytic condition or the group-analytic one, contemporary psychoanalytic perspectives include both the bi-personal unconscious interactions and the various levels of the total situation in their conceptualizations of the nature of the process...
February 8, 2018: American Journal of Psychoanalysis
https://www.readbyqxmd.com/read/29417087/fundamentals-of-presbyopia-visual-processing-and-binocularity-in-its-transformation
#14
Olga I Rozanova, Andrey G Shchuko, Tatyana S Mischenko
Background: The accommodation has considerable interactions with the pupil response, vergence response and binocularity. The transformation of visual reception processing and the changes of the binocular cooperation during the presbyopia development are still poorly studied. So, the regularities of visual system violation in the presbyopia formation need to be characterized. This study aims to reveal the transformation of visual reception processing and to determine the role of disturbances in binocular interactions in presbyopia formation...
2018: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/29400771/nanofinishing-of-bk7-glass-using-a-magnetorheological-solid-rotating-core-tool
#15
Sumit Kumar, Anant Kumar Singh
Surface finishing is a promising method to improve the optical characteristics of crown glass. BK7 finds its applications in transmissive optics, i.e., lenses of binoculars, lenses of microscopes, lenses of telescopes, and light-emitting diodes. The magnetorheological (MR) nanofinishing of optical glasses using a solid rotating core tool is found more advantageous than the other advanced finishing processes in aspects such as precision and accuracy. In the present research, the MR nanofinishing with a solid rotating core tool is carried out on the BK7 glass of size 10×10×3  mm...
February 1, 2018: Applied Optics
https://www.readbyqxmd.com/read/29394920/occipital-lobe-infarction-a-rare-presentation-of-bilateral-giant-cavernous-carotid-aneurysms-a-case-report
#16
Kavin Vanikieti, Anuchit Poonyathalang, Panitha Jindahra, Piyaphon Cheecharoen, Wimonwan Chokthaweesak
BACKGROUND: Cavernous carotid aneurysm (CCA) represents 2-9% of all intracranial aneurysms and 15% of internal carotid artery (ICA) aneurysms; additionally, giant aneurysms are those aneurysms that are > 25 mm in size. Bilateral CCAs account for 11-29% of patients and are commonly associated with structural weaknesses in the ICA wall, secondary to systemic hypertension. CCAs are considered benign lesions, given the low risk for developing major neurologic morbidities (i.e., subarachnoid hemorrhage, cerebral infarction, or carotid cavernous fistula)...
February 2, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29392642/impairment-of-acquired-color-vision-in-multiple-sclerosis-an-early-diagnostic-sign-linked-to-the-greatness-of-disease
#17
Anna Piro, Antonio Tagarelli, Giuseppe Nicoletti, Sara Scannapieco, Serena Polidoro, Paola Valentino, Aldo Quattrone
OBJECTIVE: To assess the type and degree of both red-green and blue-yellow color vision deficiencies of Calabrian males affected by multiple sclerosis. MATERIAL: Eighty Calabrian male patients were enrolled (age range 18-70 years; mean age 40.6 ± 12.4 years) showing a disease duration mean of 10.6 ± 8.2 years (range = 0.5-46 years) coming from the Institute of Neurology, Magna Graecia University, Catanzaro. Optic neuritis present in the medical histories of the 21 patients does not influence color vision...
February 1, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29391706/the-effect-of-fluorosis-on-human-teeth-under-light-microscopy-a-cross-sectional-study
#18
Maya Ramesh, Malathi Narasimhan, Ramesh Krishnan, Rita Mary Aruna, Sarah Kuruvilla
Background: Fluoride is needed for the normal development of bone and teeth; in high levels, it affects developing teeth and bone. Dental fluorosis (DF) is caused by ingestion of excess fluoride mainly through drinking water. Aim: The present study aims to observe and understand the histological changes of fluorosed teeth under light microscope (LM). Materials and Methods: Teeth which were indicated for extractions for orthodontic or periodontal problems were selected...
September 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/29390295/management-of-a-neurotrophic-deep-corneal-ulcer-with-amniotic-membrane-transplantation-in-a-patient-with-functional-monocular-vision-a-case-report
#19
Tobias Röck, Karl Ulrich Bartz-Schmidt, Daniel Röck
RATIONALE: Amniotic membrane transplantation (AMT) has been performed therapeutically in humans for over 100 years. In recent 2 decades AMTs have been used increasingly and successfully to treat various types of ophthalmic indications. PATIENT CONCERNS: An 83-year-old man was referred to our eye hospital with a refractory neurotrophic deep corneal ulcer of the left eye. DIAGNOSES: The best-corrected visual acuity of the left eye was 0.5 (0...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29384802/optimal-intereye-difference-thresholds-in-retinal-nerve-fiber-layer-thickness-for-predicting-a-unilateral-optic-nerve-lesion-in-multiple-sclerosis
#20
Rachel C Nolan, Steven L Galetta, Teresa C Frohman, Elliot M Frohman, Peter A Calabresi, Carmen Castrillo-Viguera, Diego Cadavid, Laura J Balcer
BACKGROUND: The optic nerve is a frequent site for involvement in multiple sclerosis (MS). Optical coherence tomography (OCT) detects thinning of the retinal nerve fiber layer (RNFL) in eyes of patients with MS and in those meeting criteria for clinically or radiologically isolated demyelinating syndromes. Current international diagnostic criteria for MS do not include the optic nerve as an imaging lesion site despite the high prevalence of acute optic neuritis (ON), or occult optic neuropathy, among early MS and clinically isolated syndrome patients; as well as most MS patients over the course of the disease...
January 29, 2018: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
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