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Journal articles on the topic 'Flash blindness'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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1

McCulloch, Daphne L., and Margot J. Taylor. "Cortical blindness in children: Utility of flash VEPs." Pediatric Neurology 8, no. 2 (1992): 156. http://dx.doi.org/10.1016/0887-8994(92)90042-w.

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2

Jurnal, Redaksi Tim. "ANIMASI INTERAKTIF SIMULASI TES BUTA WARNA DENGAN METODE ISHIHARA BERBASIS ADOBE FLASH CS 5." PETIR 10, no. 2 (2018): 29–36. http://dx.doi.org/10.33322/petir.v10i2.21.

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Colour blindness isi disorder caused by the inability of teh eys cone cells to capture a spesific color spectrum due to genetic factors. Color blindness is a genetic disorder/ congenital inherited from parents to their childern, because this disorder is carried by the X chomeosome. Many people find out too late in the color blindness.This isi due to lack of information and insight about the color blind test. Therefore, this aplication is made so that people can find out about all sort of color blindness test, the results of each simulation to make simulation aktratif silmulation is made with a

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3

Tse, P. U., D. L. Sheinberg, and N. K. Logothetis. "Attentional Enhancement Opposite a Peripheral Flash Revealed Using Change Blindness." Psychological Science 14, no. 2 (2003): 91–99. http://dx.doi.org/10.1111/1467-9280.t01-1-01425.

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We describe a new method for mapping spatial attention that reveals a pooling of attention in the hemifield opposite a peripheral flash. Our method exploits the fact that a brief full-field blank can interfere with the detection of changes in a scene that occur during the blank. Attending to the location of a change, however, can overcome this change blindness, so that changes are detected. The likelihood of detecting a new element in a scene therefore provides a measure of the occurrence of attention at that element's location. Using this measure, we mapped how attention changes in response t

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4

Palmer, Dakota B., Yusuke Yamani, Taylor L. Bobrow, Nicole D. Karpinsky, and Dean J. Krusienski. "Transient Signals and Inattentional Blindness in a Multi-object Tracking Task." i-Perception 9, no. 1 (2018): 204166951875459. http://dx.doi.org/10.1177/2041669518754595.

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Inattentional blindness is a failure to notice an unexpected event when attention is directed elsewhere. The current study examined participants’ awareness of an unexpected object that maintained luminance contrast, switched the luminance once, or repetitively flashed. One hundred twenty participants performed a dynamic tracking task on a computer monitor for which they were instructed to count the number of movement deflections of an attended set of objects while ignoring other objects. On the critical trial, an unexpected cross that did not change its luminance (control condition), switched

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5

Frank, Yitzchak, Diane Kurtzberg, Judith A. Kreuzer, and Herbert G. Vaughan. "FLASH AND PATTERN-REVERSAL VISUAL EVOKED POTENTIAL ABNORMALITIES IN INFANTS AND CHILDREN WITH CEREBRAL BLINDNESS." Developmental Medicine & Child Neurology 34, no. 4 (2008): 305–15. http://dx.doi.org/10.1111/j.1469-8749.1992.tb11434.x.

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6

Langrová, Hana, Daphne Gamer, Christoph Friedburg, Dorothea Besch, Eberhart Zrenner, and Eckart Apfelstedt-Sylla. "Abnormalities of the long flash ERG in congenital stationary night blindness of the Schubert–Bornschein type." Vision Research 42, no. 11 (2002): 1475–83. http://dx.doi.org/10.1016/s0042-6989(02)00068-8.

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7

Leahy, Kate E., Tom Wright, Monika K. Grudzinska Pechhacker, et al. "Optic Atrophy and Inner Retinal Thinning in CACNA1F-Related Congenital Stationary Night Blindness." Genes 12, no. 3 (2021): 330. http://dx.doi.org/10.3390/genes12030330.

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Hemizygous pathogenic variants in CACNA1F lead to defective signal transmission from retinal photoreceptors to bipolar cells and cause incomplete congenital stationary night blindness in humans. Although the primary defect is at the terminal end of first-order neurons (photoreceptors), there is limited knowledge of higher-order neuronal changes (inner retinal) in this disorder. This study aimed to investigate inner retinal changes in CACNA1F-retinopathy by analyzing macular ganglion cell layer-inner plexiform layer (GCL-IPL) thickness and optic disc pallor in 22 subjects with molecularly confi

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8

Kurata, Kentaro, Katsuhiro Hosono, and Yoshihiro Hotta. "Long-Term Clinical Course in a Patient with Complete Congenital Stationary Night Blindness." Case Reports in Ophthalmology 8, no. 1 (2017): 237–44. http://dx.doi.org/10.1159/000462961.

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Background: This report describes a 45-year-old man with complete congenital stationary night blindness (CSNB1) who has been followed up for 38 years. Case: The patient first visited our hospital as a 7-year-old boy with a complaint of low visual acuity. Best corrected visual acuity (BCVA) was 0.5 in the right eye and 0.6 in the left eye. The refractive error was approximately –5.0 D in both eyes. The fundus showed only myopic changes. A bright-flash electroretinogram (ERG) revealed a negative configuration. We diagnosed CSNB and corrected the refractive error with glasses. We continued to mon

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9

Herzon, Garrett D., and David L. Zealear. "Intraoperative Monitoring of the Visual Evoked Potential during Endoscopic Sinus Surgery." Otolaryngology–Head and Neck Surgery 111, no. 5 (1994): 575–79. http://dx.doi.org/10.1177/019459989411100507.

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Iatrogenic blindness resulting from conventional and endoscopic sinus surgery continues to be a major concern to the head and neck surgeon. A new electrophysiologic monitoring technique has been developed that can help avoid damage to the optic nerve and visual system. The approach involves monitoring the visual evoked potential with presentation of flash stimuli to the eyes. Thirty patients with chronic sinusitis underwent endoscopic sinus surgery with visual evoked potential monitoring. The procedures were carried out with patients under intravenous general anesthesia. Needle cortical electr

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10

Hussain, S. S. M., H. C. K. Laljee, J. M. Horrocks, and A. R. H. Grace. "Monitoring of intra-operative visual evoked potentials during functional endoscopic sinus surgery (FESS) under general anaesthesia." Journal of Laryngology & Otology 110, no. 1 (1996): 31–36. http://dx.doi.org/10.1017/s0022215100132669.

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AbstractFunctional endoscopic sinus surgery (FESS) is an effective treatment for inflammatory sinus disease. The potential for major complications during FESS is high particularly under general anaesthesia. The most serious of these is injury to the eye leading to blindness. We looked at the feasibility of monitoring flash visual evoked potentials (VEP) simultaneously from both eyes during FESS. Five patients were included in this preliminary study. A haptic contact lens connected by fibreoptic cable to a photostimulator was placed on the eyes and stimulus of comparable intensity to a conventi

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11

Hall, Nicholas J., David Miguel Susano Pinto, and Ian M. Dobbie. "BeamDelta: simple alignment tool for optical systems." Wellcome Open Research 4 (December 6, 2019): 194. http://dx.doi.org/10.12688/wellcomeopenres.15576.1.

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BeamDelta is a tool to help align optical systems. It greatly assists in assembling bespoke optical systems by providing a live view of the current laser beam position and a reference position. Even a simple optical setup has multiple degrees of freedom that affect the alignment of beam paths. These degrees of freedom rise exponentially with the complexity of the system. The process of aligning all the optical components for a specific system is often esoteric and poorly documented, if it is documented at all. Alignment methods used often rely on visual inspection of beams impinging on pinhole

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12

Deroy, Ophelia, Yi-Chuan Chen, and Charles Spence. "Multisensory constraints on awareness." Philosophical Transactions of the Royal Society B: Biological Sciences 369, no. 1641 (2014): 20130207. http://dx.doi.org/10.1098/rstb.2013.0207.

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Given that multiple senses are often stimulated at the same time, perceptual awareness is most likely to take place in multisensory situations. However, theories of awareness are based on studies and models established for a single sense (mostly vision). Here, we consider the methodological and theoretical challenges raised by taking a multisensory perspective on perceptual awareness. First, we consider how well tasks designed to study unisensory awareness perform when used in multisensory settings, stressing that studies using binocular rivalry, bistable figure perception, continuous flash su

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13

FEIGL, B., B. BROWN, J. LOVIE-KITCHIN, and P. SWANN. "Postreceptoral adaptation abnormalities in early age-related maculopathy." Visual Neuroscience 23, no. 6 (2006): 863–70. http://dx.doi.org/10.1017/s0952523806230190.

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Age-related maculopathy (ARM) has become the major cause of blindness in the Western World. Currently its pathogenesis and primary site of functional damage is not fully understood but ischemia is believed to play a major role. Early detection and precise monitoring of progression of ARM are main goals of current research due to lack of sufficient treatment options, especially in the dry, atrophic form of this disease. We applied the multifocal electroretinogram (mfERG) that can detect any local functional deficit objectively in the central retina. We recorded two paradigms in early ARM patien

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14

LIAPIS (Ι. Κ. ΛΙΑΠΗΣ), I. K. "Electroretinography in small animal practice." Journal of the Hellenic Veterinary Medical Society 55, no. 4 (2017): 331. http://dx.doi.org/10.12681/jhvms.15142.

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During the last years, clinical electrophysiology has considerably improved, allowing the evaluation of the retina and visual pathways. In small animal practice, electroretinography is more useful than other diagnostic techniques for the assessment of retinal function, because of the fact that this method doesn't require patient's cooperation. Electroretinography (ERG) is an electrophysiological technique, which measures the retinal action potentials in response to light stimulation. Flash ERG evaluates the function of outer retina and is performed by the using of flashlight units that uniform

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15

Sliney, David H. "How Light Reaches the Eye and Its Components." International Journal of Toxicology 21, no. 6 (2002): 501–9. http://dx.doi.org/10.1080/10915810290169927.

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The human eye is exquisitely sensitive to light (i.e., visible radiant energy), and when dark-adapted, the retina can detect a few photons of blue-green light. It is therefore not at all surprising that ocular tissues are also more vulnerable to ultraviolet (UV) and light damage than the skin. For this reason, humans have evolved with certain anatomical, physiological, and behavioral traits that protect this critical organ from the UV damage that would otherwise be certain from the intense bath of overhead solar ultraviolet radiation (UVR) when we are outdoors during daylight. For example, the

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16

Jiang, Xiaofan, and Omar A. Mahroo. "Negative electroretinograms: genetic and acquired causes, diagnostic approaches and physiological insights." Eye 35, no. 9 (2021): 2419–37. http://dx.doi.org/10.1038/s41433-021-01604-z.

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AbstractThe dark-adapted human electroretinogram (ERG) response to a standard bright flash includes a negative-going a-wave followed by a positive-going b-wave that crosses the baseline. An electronegative waveform (or negative ERG) results when the b-wave is selectively reduced such that the ERG fails to cross the baseline following the a-wave. In the context of a normally sized a-wave, it indicates a site of retinal dysfunction occurring after phototransduction (commonly at the photoreceptor to bipolar cell synapse). This is an important finding. In genetic disease, the pattern of ERG abnorm

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17

Bacellar-Galdino, Marianna, Fabiano Montiani-Ferreira, Andre Tavares Somma, Ricardo Guilherme D'Otaviano de Castro Vilani, and Ivan Roque de Barros Filho. "Ophthalmic findings in sheep treated with closantel in Curitiba, Brazil." May-2020 13, no. 5 (2020): 860–64. http://dx.doi.org/10.14202/vetworld.2020.860-864.

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Background and Aim: Closantel is a widely used anti-parasitic drug that is known to cause ophthalmic problems that lead to blindness. The aim of this study was to investigate the possible electroretinographic changes in sheep that received closantel. Materials and Methods: Twenty-four 30-day-old Suffolk sheep were split into control group (12 animals) and closantel group (12 animals). The latter group received 15 mg/kg of closantel subcutaneously immediately after the first electroretinography (ERG). The ISCEV protocol was used to perform the ERGs pre-dose (0), 7, and 30 days after treatment.

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18

Krastel, H., M. Zyganow, M. Mai, and F. Schlichtenbrede. "Flash adaptometry in congenital stationary night blindness." Acta Ophthalmologica 94 (September 14, 2016). http://dx.doi.org/10.1111/j.1755-3768.2016.0657.

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19

Ik, Zu Quan, Sian Lun Lau, and Jan Bond Chan. "TOWARDS THE DESIGN OF A MOBILE CATARACT SCREENING SMARPHONE APP." Jurnal Teknologi 78, no. 12-3 (2016). http://dx.doi.org/10.11113/jt.v78.10027.

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The cataract is the leading cause of blindness and affecting nearly 22 million Americans aged 40 and older. Cataract screening is a process usually carries out by an ophthalmologist using specialize equipment. The hurdles that we are facing today to screen for cataract include the availability of medical practitioner and proper equipment, especially in the rural area. Other problems include the cost and time involved to do eye examination from the medical practitioner. In this paper, we aim to research on an alternate cataract screening solution using a flash-enabled smartphone without any ext

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20

MacDonald, Zachary G., John H. Acorn, Jian Zhang, and Scott E. Nielsen. "Perceptual Range, Targeting Ability, and Visual Habitat Detection by Greater Fritillary Butterflies Speyeria cybele (Lepidoptera: Nymphalidae) and Speyeria atlantis." Journal of Insect Science 19, no. 4 (2019). http://dx.doi.org/10.1093/jisesa/iez060.

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Abstract Butterflies are widely invoked as model organisms in studies of metapopulation and dispersal processes. Integral to such investigations are understandings of perceptual range; the maximum distance at which organisms are able to detect patches of suitable habitat. To infer perceptual range, researchers have released butterflies at varying distances from habitat patches and observed their subsequent flight behaviors. It is often assumed that butterflies rely on visual senses for habitat detection; however, this assumption has not been explicitly investigated. Here, we assess the extent

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21

Zhao, Tongtao, Hongxuan Lie, Fang Wang, et al. "Comparative Study of a Modified Sub-Tenon’s Capsule Injection of Triamcinolone Acetonide and the Intravenous Infusion of Umbilical Cord Mesenchymal Stem Cells in Retinitis Pigmentosa Combined With Macular Edema." Frontiers in Pharmacology 12 (September 27, 2021). http://dx.doi.org/10.3389/fphar.2021.694225.

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Retinitis pigmentosa (RP) is a hereditary retinal degenerative disease leading to eventual blindness. When RP is combined with macular edema (ME), the visual impairment further worsens. We compared a modified sub-Tenon’s capsule injection of triamcinolone acetonide (TA) and the intravenous infusion of umbilical cord mesenchymal stem cells (UCMSCs) in the treatment of RP combined with ME (RP-ME) to assess their safety and efficacy in eliminating ME and restoring visual function. A phase I/II clinical trial enrolled 20 patients was conducted. All patients were followed up for 6 months. There wer

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22

Chaudhary, Ram Chet, A. Gandhe, and R. Kumar. "Biofortification to combat Vitamin A deficiency sustainably through promoting Orange-fleshed Sweet Potato in eastern Uttar Pradesh." International Journal of Science, Technology & Society 2, no. 1-2 (2016). http://dx.doi.org/10.18091/ijsts.v2i1-2.7536.

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India is among top few countries for Vitamin A deficiency as 60,000 children go blind annually. Other than blindness, a number of eye diseases like night blindness, bitot spot, xerothalmia and others are caused by vitamin A deficiency. More than 6% children in Uttar Pradesh suffer from clinical vitamin A deficiency. Vitamin A deficiency among poor children in Gorakhpur average to 42% (as high as 65% in 3 year age group). Government of India, supported by CIDA, Helen Keller International, Micro-nutrient Initiative, UNICEF, USAID and the World Bank distributed free vitamin A capsule. Results wer

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23

Potts, Graham. ""I Want to Pump You Up!" Lance Armstrong, Alex Rodriguez, and the Biopolitics of Data- and Analogue-Flesh." M/C Journal 16, no. 6 (2013). http://dx.doi.org/10.5204/mcj.726.

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The copyrighting of digital augmentations (our data-flesh), their privatization and ownership by others from a vast distance that is simultaneously instantly telematically surmountable started simply enough. It was the initially innocuous corporatization of language and semiotics that started the deeper ontological flip, which placed the posthuman bits and parts over the posthuman that thought that it was running things. The posthumans in question, myself included, didn't help things much when, for instance, we all clicked an unthinking or unconcerned "yes" to Facebook® or Gmail®'s "terms and

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