scholarly journals The contribution of central and peripheral vision in scene categorization: A study on people with central vision loss

2014 ◽  
Vol 98 ◽  
pp. 46-53 ◽  
Author(s):  
Miguel Thibaut ◽  
Thi Ha Chau Tran ◽  
Sebastien Szaffarczyk ◽  
Muriel Boucart
Keyword(s):  
Vision Loss ◽  
Peripheral Vision ◽  
Central Vision ◽  
Scene Categorization ◽  
Central Vision Loss

scholarly journals Cortical reorganization of peripheral vision induced by simulated central vision loss

2019 ◽  
pp. 2126-18
Author(s):  
Nihong Chen ◽  
Kilho Shin ◽  
Rachel Millin ◽  
Yongqian Song ◽  
MiYoung Kwon ◽  
...  
Keyword(s):  
Vision Loss ◽  
Peripheral Vision ◽  
Cortical Reorganization ◽  
Central Vision ◽  
Central Vision Loss

scholarly journals Reduction of collinear inhibition in observers with central vision loss using anodal transcranial direct current stimulation: A case series

2020 ◽  
Author(s):  
Rajkumar Nallour Raveendran ◽  
Amy Chow ◽  
Katelyn Tsang ◽  
Arijit Chakraborty ◽  
Benjamin Thompson
Keyword(s):  
Visual Cortex ◽  
Visual Processing ◽  
Vision Loss ◽  
Peripheral Vision ◽  
Case Series ◽  
Cortical Inhibition ◽  
Peripheral Retina ◽  
Central Vision ◽  
Direct Stimulation ◽  
Central Vision Loss

AbstractPeople with central vision loss (CVL) due to macular degeneration are forced to rely on their residual peripheral vision and often develop a preferred retinal locus (PRL), a region of intact peripheral retina that is used for fixation. At the PRL, visual processing is impaired due to crowding (cluttering of visual objects). The problem of crowding still persists when images are magnified to account for the lower resolution of peripheral vision. We assessed whether anodal transcranial direct stimulation (a-tDCS), a neuro-modulation technique that alters cortical inhibition, would reduce collinear inhibition (an early component of crowding) when applied to the visual cortex in patients with CVL. Our results showed that applying a-tDCS to the visual cortex for 20mins reduced crowding in three patients with CVL and that the effect was sustained for up to 30mins. Sham stimulation delivered in a separate session had no effect. These initial observations mandate further research into the use of a-tDCS to enhance cortical processing of residual retinal input in patients with CVL.

scholarly journals Driving Habits in Older Patients with Central Vision Loss

Ophthalmology ◽  
2014 ◽  
Vol 121 (3) ◽  
pp. 727-732 ◽  
Author(s):  
Sabyasachi Sengupta ◽  
Suzanne W. van Landingham ◽  
Sharon D. Solomon ◽  
Diana V. Do ◽  
David S. Friedman ◽  
...  
Keyword(s):  
Older Patients ◽  
Vision Loss ◽  
Central Vision ◽  
Central Vision Loss

scholarly journals Bilateral juxtapapillary choroidal neovascularization secondary to Birdshot chorioretinopathy -- case report

2021 ◽  
Author(s):  
Sania Vidas Pauk ◽  
Nenad Vukojević ◽  
Sonja Jandroković ◽  
Miro Kalauz ◽  
Martina Tomić ◽  
...  
Keyword(s):  
Case Report ◽  
Macular Edema ◽  
Choroidal Neovascularization ◽  
High Myopia ◽  
Vision Loss ◽  
Detailed Examination ◽  
Central Vision ◽  
Birdshot Chorioretinopathy ◽  
Central Vision Loss ◽  
The Right

Central vision loss, photopsia, floaters and macular edema in a highly myopic patient can easily be misrelated to high myopia complications. However, in atypical cases, detailed examination along with a thorough diagnostic is required to establish the right diagnosis, which is often beyond the limits of the condition originally considered.

High rate of conversion from ocular hypertension to glaucoma in subjects with uveitis

2021 ◽  
pp. bjophthalmol-2021-318809
Author(s):  
Tiffany Ma ◽  
Joanne L Sims ◽  
Sonya Bennett ◽  
Shenton Chew ◽  
Rachael L Niederer
Keyword(s):  
Ocular Hypertension ◽  
Vision Loss ◽  
Glaucoma Surgery ◽  
High Rate ◽  
Rapid Progression ◽  
Central Vision ◽  
Uveitic Glaucoma ◽  
Central Vision Loss

AimsTo examine presentation, management and long-term sequelae of ocular hypertension and uveitic glaucoma.MethodsRetrospective observational study of all subjects with uveitic glaucoma or ocular hypertension seen in Auckland uveitis clinics over the last 10 years.ResultsA total of 188 eyes of 139 subjects with uveitic glaucoma or ocular hypertension were included for analysis. Total follow-up was 1854.5 eye years (mean 9.9 years). The mean age at uveitis diagnosis was 49.3 years. 52.5% of subjects were male. The most common diagnoses were idiopathic uveitis (29.3%), sarcoidosis (13.3%), herpes zoster (6.9%), HLA-B27 uveitis (6.9%), tuberculosis (5.9%) and Posner-Schlossmann or cytomegalovirus (CMV) uveitis (5.3%). Median intraocular pressure (IOP) at diagnosis was 35 mm Hg (IQR 29–45). 144 eyes (77.0%) developed glaucoma during the follow-up period, of whom 41 lost some central vision due to glaucoma. Oral acetazolamide was required for IOP control in 64.5%, 50 eyes underwent trabeculectomy, 18 eyes required a tube and 6 underwent minimally invasive glaucoma surgery.ConclusionRapid progression was observed from ocular hypertension to uveitic glaucoma. Uveitic glaucoma is aggressive, with high likelihood of requiring surgical management and high risk of central vision loss. Close collaboration between uveitis and glaucoma specialists is required to maximise outcomes for these patients.

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