scholarly journals Spatial Contrast Sensitivity Vision Loss in Children with Cortical Visual Impairment

2012 ◽  
Vol 53 (12) ◽  
pp. 7730 ◽  
Author(s):  
William V. Good ◽  
Chuan Hou ◽  
Anthony M. Norcia
Keyword(s):  
Visual Impairment ◽  
Contrast Sensitivity ◽  
Vision Loss ◽  
Spatial Contrast Sensitivity ◽  
Cortical Visual Impairment

scholarly journals Cortical visual impairment in children with acute encephalitis syndrome

2016 ◽  
Vol 15 (2) ◽  
pp. 249-251
Author(s):  
Prastiya Indra Gunawan ◽  
Desi Primayani ◽  
Darto Saharso
Keyword(s):  
Visual Impairment ◽  
Visual Evoked Potential ◽  
Evoked Potential ◽  
Vision Loss ◽  
Medical Science ◽  
Central Nervous System Damage ◽  
Acute Encephalitis Syndrome ◽  
Acute Encephalitis ◽  
Cortical Visual Impairment ◽  
Visual Evoked

Background: Acute encephalitis syndrome (AES) is one of cortical visual impairment (CVI) causes. There were only few studies about cortical visual involvement in children with AES. Objective: To describe CVI in children with AES. Methods: This study included all children with AES during January to March 2014, were examined for visual evoked potential (VEP) to evaluate cortical visual pathway. AES was defined as clinical condition characterized by acute onset of fever, a change in mental status, and/or new onset of seizures. CVI was defined as vision loss caused by central nervous system damage confirmed by VEP. Results: There were 9 children with AES and all showed bilateral CVI. The age range between 6 to 48 months old, with 7 males and 2 females. Visual evoked potential result showed 8 children with demyelinating type and 1 with axonal type. Conclusion: Type of CVI caused by AES can be demyelinating type or axonal type.Bangladesh Journal of Medical Science Vol.15(2) 2016 p.249-251

Profiles of Cortical Visual Impairment (CVI) Patients Visiting Pediatric Outpatient Department

2020 ◽  
Vol 12 (1) ◽  
pp. 25-31
Author(s):  
Rojeeta Parajuli ◽  
Srijana Adhikari ◽  
Ujjowala Shrestha
Keyword(s):  
Visual Impairment ◽  
Vision Loss ◽  
Anterior Segment ◽  
Birth Asphyxia ◽  
Febrile Convulsion ◽  
Occipital Cortex ◽  
Outpatient Department ◽  
Mri Findings ◽  
Female Ratio ◽  
Cortical Visual Impairment

Introduction: Cortical visual impairment denotes vision loss from pathology posterior to the lateral geniculate nucleus. The pathology may involve the optic radiations, as well as the occipital cortex. Objective: To find out the profiles of cortical visual impairment patients visiting the pediatric outpatient department. Materials and Methods: The study is a hospital based retrospective study in which all consecutive patients diagnosed with cortical visual impairment were included. A total of 40 patients were collected. Detailed history taking and clinical examination was done. Visual acuity was taken by fixation and follows method. Among 40 patients, only two patients were advised to use glass and the rest did not have significant refractive error. Myopia ranged from (-2D to -5D) and five patients were myopic. Astigmatism ranged from (-0.5 to -2.5 x 108°) and 10 patients had astigmatism. Suspected patients were advised for Computed Tomography/ Magnetic Resolution Imaging (CT/MRI) of the brain. Results: The male: female ratio was 3:2, the age group ranged from 4 months to 8 years old, antenatal checkup history was uneventful in 77.5% cases, history of birth asphyxia was present in 87.5% cases, postnatal checkup history was eventful in 67.5%, associated systemic illness was present in 60%, anterior segment examination was normal in 92.5%, posterior segment examination was normal in 72.5%, CT/MRI findings were abnormal in 57.5% and was not done in 30% of cases. Antenatal history was described as uneventful if there was absence of diabetes mellitus, hypertension, fever and intake of any medicine. Postnatal history was described as uneventful if there was absence of febrile convulsion, meningitis, encephalocele, encephalopathy, epilepsy or hydrocephalus. Conclusion: Birth asphyxia and postnatal infections are the major causes for cortical visual impairment. We can mitigate cortical visual impairment by limiting birth asphyxia and postnatal infections.

scholarly journals World Health Report on Vision: Aging Implications for Global Vision and Eye Health

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 807-808
Author(s):  
Bonnielin Swenor ◽  
Varshini Varadaraj ◽  
Moon Jeong Lee ◽  
Heather Whitson ◽  
Pradeep Ramulu
Keyword(s):  
Older Adults ◽  
Visual Impairment ◽  
Vision Loss ◽  
World Health ◽  
World Health Report ◽  
Global Public Health ◽  
Eye Care ◽  
Health Report ◽  
Public Health Challenges ◽  
Health Organization

Abstract In 2019, the World Health Organization World Report on Vision estimated that that 2.2 billion people have a vision impairment, of which almost half could have been prevented or is yet to be addressed. As the global population ages and the prevalence of visual impairment increases, inequities in eye care and the downstream health and aging consequences of vision loss will become magnified. This session will: (1) provide key information regarding the burden of eye disease and visual impairment among older adults worldwide; (2) outline a framework created to conceptualize the aging and long-term health implications of vision loss, and (3) discuss the global public health challenges to eye care and to maximizing health for older adults with visual impairments.

Cortical Visual Impairment in Infants and Children

2001 ◽  
Vol 41 (1) ◽  
pp. 159-169 ◽  
Author(s):  
Mehran A. Afshari ◽  
Nasrin A. Afshari ◽  
Anne B. Fulton
Keyword(s):  
Visual Impairment ◽  
Infants And Children ◽  
Cortical Visual Impairment ◽  
In Infants And Children

Auditory training system for improvement of auditory perception ability in blind soccer.

2021 ◽  
Vol 263 (2) ◽  
pp. 4290-4294
Author(s):  
Mari Ueda
Keyword(s):  
Visual Impairment ◽  
Auditory Perception ◽  
Personal Experience ◽  
Vision Loss ◽  
Training System ◽  
Auditory Training ◽  
Audio Information ◽  
High Degree ◽  
Game Performance

Blind soccer is a sport designed for people with visual impairment. All players (except the goalkeepers) are people with visual impairment but not limited to complete vision loss (i.e. without any ability to see; blind in both eyes) . Considering the various degrees of the disability, all players put on an eye mask for a complete vision blockage so they just rely on their audio sensation for the location of the ball and the goals to drift, shoot, and defend as a game with a high degree of movement. Different from conventional soccer games, the ball makes a sound in which the callers at the back of the shooting goal provide audio guidance in order to make the game highly dependent on audio information. However, the ability to recognize and locate rely solely on training and personal experience of individual players that essential audio information of the game has never been analyzed in a scientific manner and theories about distance positioning is especially inadequate. Hence, this study aims to utilize the audio sensation for better game performance. First, we focus on the distance attenuation feature when the ball spins, which is followed by a description about an audio training system for distance positioning from sounds.

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