Results 21 to 30 of about 2,981,639 (311)

Change of Retinal Vessels in Different Sectors of the Parapapillary Area in Primary Open-Angle Glaucoma

Frontiers in Medicine, 2021
Purpose: To investigate the changes in the retinal vessels (RVs) in different sectors in patients with primary open-angle glaucoma (POAG), and their possible correlations with retinal nerve fiber layer thickness (RNFLT) and visual-field defects in the ...
Jingyi Cheng, Jingyi Cheng, Jingyi Cheng, Hongmei Zhao, Hongmei Zhao, Hongmei Zhao, Chunhui Jiang, Chunhui Jiang, Chunhui Jiang, Xiangmei Kong, Xiangmei Kong, Xiangmei Kong, Xinghuai Sun, Xinghuai Sun, Xinghuai Sun, Xinghuai Sun   +15 more
doaj   +1 more source

Visually-impaired touch

Scholarpedia, 2012
Blind individuals rely on their sense of touch for pattern perception, much as the rest of us depend on vision. If a blind person has extra training in the use of touch for tasks such as Braille or spatial orientation, then we might expect increased skill as a consequence. This is the sensory compensation hypothesis, and there is evidence that practice
Morton Heller, Soledad Ballesteros
openaire   +2 more sources

Visual impairment among weaving communities in Prakasam district in South India. [PDF]

, 2013
PURPOSE: To assess the prevalence and causes of visual impairment in weaving communities in Prakasam district in South India state of Andhra Pradesh.
Saggam Narsaiah, Konegari Shekhar, Marmamula, Srinivas, Rohit C Khanna, Narsaiah, Saggam, Shekhar, Konegari, Khanna, Rohit C, Srinivas Marmamula, Ghanshyam Palamaner Subash Shantha, Krishnaiah, Sannapaneni, Gudlavalleti V S Murthy, Subhabrata Chakrabarti, Shekhar Konegari, Krishnaiah Sannapaneni, Hira B Pant, Palamaner Subash Shantha, Ghanshyam, Palamaner Subash Shantha Ghanshyam, Khanna Rohit C., Giridhar Pyda, Gilbert Clare, Clare Gilbert, Marmamula Srinivas, Gilbert, Clare, Murthy, Gudlavalleti VS, Pyda Giridhar, Rao, Gullapalli N, Pant, Hira B, Pant Hira B., Gullapalli N Rao, Giridhar, Pyda, Chakrabarti Subhabrata, Murthy Gudlavalleti V. S., Narsaiah Saggam, Chakrabarti, Subhabrata, Sannapaneni Krishnaiah, Rao Gullapalli N.   +35 more
core   +3 more sources

The Nigerian national blindness and visual impairment survey: Rationale, objectives and detailed methodology [PDF]

, 2008
Background: Despite having the largest population in Africa, Nigeria has no accurate population based data to plan and evaluate eye care services. A national survey was undertaken to estimate the prevalence and determine the major causes of blindness and
Gudlavalleti Murthy VS, Brendan Dineen, Jiya, JY, Hannah Faal, Elhassan, Elizabeth, Elizabeth Elhassan, Mansur Rabiu, Rabiu, Mansur, Abiose Adenike, Rabiu, M, Ozemela, Chinenyem P, Adenike Abiose, Lee, Pak Sang, Lee Pak, Mahdi, Abdull M, Gilbert Clare E, Abiose, Adenike, Abubakar Tafida, Christian C Ezelum, Dineen Brendan, Abiose, A, Gudlavalleti, MVS, Elhassan Elizabeth, Ozemela Chinenyem P, Mahdi Abdull M, Mahdi, AM, Fatima Kyari, Abdull M Mahdi, Ezelum, CC, Lee, PS, Gilbert, CE, Gabriel, E, Clare E Gilbert, Ezelum, Christian C, Pak Sang Lee, Dineen, Brendan, Gabriel, Entekume, Gudlavalleti, Murthy VS, Tafida Abubakar, Murthy VS Gudlavalleti, Faal, H, Kyari, F, Abubakar, T, Elhassan, E, Entekume Gabriel, Ozemela, CP, Gabriel Entekume, Kyari, Fatima, Faal Hannah, Ezelum Christian C, Rabiu Mansur, Faal, Hannah, Gilbert, Clare E, Kyari Fatima, Chinenyem P Ozemela, Abubakar, Tafida, Jiya, Jonathan Y, Jonathan Y Jiya, Dineen, B, Jiya Jonathan Y   +59 more
core   +2 more sources

Changes in best-corrected visual acuity in patients with dry age-related macular degeneration after stem cell transplantation: systematic review and meta-analysis

Stem Cell Research & Therapy, 2022
Background Stem cell transplantation may improve visual acuity in patients with dry age-related macular degeneration. Herein, we aimed to summarise the evidence on the risks and benefits of stem cell transplantation for improving visual acuity, including
Licheng Li, Yang Yu, Shu Lin, Jianmin Hu
doaj   +1 more source

Update of application of olfactory ensheathing cells and stem cells/exosomes in the treatment of retinal disorders

Stem Cell Research & Therapy, 2022
Age-related macular degeneration, diabetic retinopathy, retinitis pigmentosa and other retinal disorders are the main causes of visual impairment worldwide.
Yang Yu, Licheng Li, Shu Lin, Jianmin Hu
doaj   +1 more source

Case report: Sympathetic ophthalmia after vitrectomies in a patient with Von Hippel–Lindau syndrome

Frontiers in Medicine, 2023
BackgroundSympathetic ophthalmia (SO) is a rare but sight-threatening uveitis, and most observations have been made after typical manifestations occur.
Xiaonan Zhuang, Xiaonan Zhuang, Xiaonan Zhuang, Fengjuan Gao, Fengjuan Gao, Fengjuan Gao, Zhongcui Sun, Zhongcui Sun, Zhongcui Sun, Xinyi Ding, Xinyi Ding, Xinyi Ding, Gezhi Xu, Gezhi Xu, Gezhi Xu   +14 more
doaj   +1 more source

Neuroplasticity in visual impairments

Neurology International, 2018
The visual acuity loss enables the brain to access new pathways in the quest to overcome the visual limitation and this is wellknown as neuroplasticity which have mechanisms to cortical reorganization. In this review, we related the evidences about the neuroplasticity as well as cortical anatomical differences and functional repercussions in visual ...
Paulo Ramiler Silva, Tiago Farias, Fernando Cascio, Levi dos Santos, Vinícius Peixoto, Eric Crespo, Carla Ayres, Marcos Ayres, Victor Marinho, Victor Hugo Bastos, Pedro Ribeiro, Bruna Velasques, Marco Orsini, Rossano Fiorelli, Marcos R.G. de Freitas, Silmar Teixeira   +15 more
openaire   +4 more sources

Involvement of the MEK-ERK/p38-CREB/c-fos signaling pathway in Kir channel inhibition-induced rat retinal Müller cell gliosis

Scientific Reports, 2017
Our previous studies have demonstrated that activation of group I metabotropic glutamate receptors downregulated Kir channels in chronic ocular hypertension (COH) rats, thus contributing to Müller cell gliosis, characterized by upregulated expression of ...
Feng Gao, Fang Li, Yanying Miao, Lin-Jie Xu, Yuan Zhao, Qian Li, Sheng-Hai Zhang, Jihong Wu, Xing-Huai Sun, Zhongfeng Wang   +9 more
doaj   +1 more source

Are language and social communication intact in children with congenital visual impairment at school age? [PDF]

, 2009
Background:  Development of children with congenital visual impairment (VI) has been associated with vulnerable socio-communicative outcomes often bearing striking similarities to those of sighted children with autism.1 To date, very little is known ...
Dale, Naomi, Pring, Linda, Valerie Tadić, Tadic, Valerija, Pring, L, Naomi Dale, Tadic, V, Tadić, Valerie, Dale, N, Linda Pring   +9 more
core   +1 more source