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21:06 EDT 22nd September 2018 | BioPortfolio

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Showing "Reduced visual acuity associated with decline reading efficiency" PubMed Articles 1–25 of 19,000+

Amblyopia: The Thalamus Is a No-Go Area for Visual Acuity.

When one eye does not function well during development, the visual cortex becomes less responsive to it and visual acuity declines. New research suggests that reduced response strength and deteriorating acuity occur in separate circuits.

Measuring Visual Acuity.

This article reviews the basic physiology of visual acuity and the principles for its clinical measurement. It describes visual acuity and its limits as a function of the human eye. Referring to the new international standard ISO/FDIS8596:2017 it explains the conditions for standardized visual acuity testing. Furthermore, it gives detailed instruction on measuring visual acuity at distance and near, as well as in children, in low vision patients and for scientific purposes.

Do all visual deficits cause pure alexia? Dissociations between visual processing and reading suggest "no".

Pure alexia is a deficit of reading affecting the ability to process a word's letters in parallel. Instead, a slow, effortful letter-by-letter reading strategy is employed. It has been claimed that a visual impairment caused the reading impairment. The present study compares visual processing and word reading of a patient with severe visuospatial deficits due to probable posterior cortical atrophy (PCA) to two patients with pure alexia. A double dissociation emerged between visual processing and word readin...

Dual sensory impairment: The association between glaucomatous vision loss and hearing impairment and function.

Hearing impairment, vision impairment, and dual impairment (both hearing and vision impairment), have been independently associated with functional and cognitive decline. In prior studies of dual impairment, vision impairment is generally not defined or defined by visual acuity alone. Glaucoma is a leading cause of blindness and does not affect visual acuity until late in the disease; instead, visual field loss is used to measure vision impairment from glaucoma.

Possible Influencing Factors for the Prediction of Postoperative Visual Acuity Gain after Retroiridal Iris Claw Lens Implantation.

To determine effect sizes for visual acuity (VA) and visual acuity gain (ΔVA, pre- to postoperative) after the implantation of retroiridal Verisyse iris-claw lenses.

Useful field of view test performance throughout adulthood in subjects without ocular disorders.

Previous research has shown an age-related decline in Useful Field of View (UFOV) test performance, which measures the duration required to extract relevant information from a scene in three subtasks. However, these results are mostly based on data that may have been confounded by (age-related) ocular diseases. We examined UFOV performance in subjects aged 19.5 to 70.3 years to investigate how UFOV performance changes throughout adulthood. All subjects underwent a thorough ophthalmological examination to ex...

Near visual acuity of dental hygienists with and without magnification.

The aim of this study was (i) to evaluate the visual performance of dental hygienists in their clinical environment and (ii) to analyse the relationship between self-assessed and objectively measured visual acuity.

Relationship Between Foveal Cone Structure and Visual Acuity Measured With Adaptive Optics Scanning Laser Ophthalmoscopy in Retinal Degeneration.

To evaluate foveal function in patients with inherited retinal degenerations (IRD) by measuring visual acuity (VA) after correction of higher-order aberrations.

Mesopic visual acuity is less crowded.

The decrease in visual acuity under low luminance conditions is well known. Recent laboratory evidence showed that crowding under low luminance (mesopic) light levels is less robust than under photopic conditions. The present study examines whether such differences in crowding influence clinical measurements of mesopic visual acuity, including test-retest repeatability.

Detection of Amblyopia Using Sweep VEP Vernier and Grating Acuity.

Vernier and grating acuity can be measured with swept-parameter visual evoked potentials (sVEP). However, whether sVEP Vernier and grating acuities are comparable in predicting letter acuity has not been systematically evaluated. This study evaluated the validity and reliability of sVEP Vernier and grating acuity for the detection of amblyopia in adults.

Eccentric fixation patterns, clinical findings, and reading speed in patients with bilateral toxoplasmic macular retinochoroiditis.

To study visual acuity, refractive errors, eccentric fixation, and reading performance in patients with toxoplasmic macular retinochoroiditis.

Dynamic Visual Acuity test while walking or running on treadmill: Reliability and normative data.

This study aimed to report normative reference data for a Dynamic Visual Acuity test while walking on treadmill. The protocol's suitability was assessed by investigating its test-retest reliability and its validity through the drop-out rate and verification of the frequency of head movements. Furthermore, the influence of age on visual acuity loss (VAL) was determined to reveal the need for age-specific reference data.

Rapid Objective Assessment of Contrast Sensitivity and Visual Acuity With Sweep Visual Evoked Potentials and an Extended Electrode Array.

Sweep visual evoked potentials (sVEPs) provide an implicit, objective, and sensitive evaluation of low-level visual functions such as visual acuity and contrast sensitivity. For practical and traditional reasons, sVEPs in ophthalmologic examinations have usually been recorded over a single or a limited number of electrodes over the medial occipital region. Here we examined whether a higher density of recording electrodes improves the estimation of individual low-level visual thresholds with sVEPS, and to wh...

Music reading expertise modulates hemispheric lateralization in English word processing but not in Chinese character processing.

Music notation and English word reading both involve mapping horizontally arranged visual components to components in sound, in contrast to reading in logographic languages such as Chinese. Accordingly, music-reading expertise may influence English word processing more than Chinese character processing. Here we showed that musicians named English words significantly faster than non-musicians when words were presented in the left visual field/right hemisphere (RH) or the center position, suggesting an advant...

Optimizing text for an individual's visual system: The contribution of visual crowding to reading difficulties.

Reading is a complex process that involves low-level visual processing, phonological processing, and higher-level semantic processing. Given that skilled reading requires integrating information among these different systems, it is likely that reading difficulty-known as dyslexia-can emerge from impairments at any stage of the reading circuitry. To understand contributing factors to reading difficulties within individuals, it is necessary to diagnose the function of each component of the reading circuitry. ...

Spontaneous separation of secondary epiretinal membrane.

The article presents a rare clinical case of secondary epiretinal membrane (ERM) in a 67-years-old woman. The patient was diagnosed with ERM in the left eye after loss of vision complaints. One year prior to the visit the patient had underwent 2 sessions of laser photocoagulation for proliferative post-thrombotic retinopathy in the left eye. In the context of relatively high visual functions (decimal visual acuity of 0.7 at the time of the visit), observation strategy was carried out. The follow-up period w...

Static and dynamic visual acuity and refractive errors in elite football players.

The aim of this study was to investigate static and dynamic visual acuity, refractive error, and the use of visual compensation of elite football players.

Correlation of morphological parameters and visual acuity with neurological development in former preterm children aged 4-10 years.

The objective of this study was to investigate the relationship between visual acuity, peripapillary retinal nerve fibre layer (pRNFL), retinal thickness at the fovea and other factors with the neurologic status of former preterm children.

Prediction of Visual Acuity After Cataract Surgery Using Optical Coherence Tomography Findings in Eyes With Retinitis Pigmentosa.

To investigate the predictive factors of visual acuity (VA) after cataract surgery in patients with retinitis pigmentosa (RP).

Relationship Between Dry Retinal Volume and Visual Acuity in Diabetic Macular Edema.

To evaluate the relationship between a novel spectral-domain optical coherence tomography (SD-OCT) parameter, predicted dry retinal volume (DRV), and visual acuity (VA) in subjects with diabetic macular edema.

Visual acuity, literacy, and unintentional misuse of nonprescription medications.

Results of a study of associations between visual acuity and the risk of misuse of nonprescription acetaminophen products in a sample of community-dwelling adults are reported.

Verbal task demands are key in explaining the relationship between paired-associate learning and reading ability.

Paired-associate learning (PAL) tasks measure the ability to form a novel association between a stimulus and a response. Performance on such tasks is strongly associated with reading ability, and there is increasing evidence that verbal task demands may be critical in explaining this relationship. The current study investigated the relationships between different forms of PAL and reading ability. A total of 97 children aged 8-10 years completed a battery of reading assessments and six different PAL tasks ...

Projection of long-term visual acuity outcomes based on initial treatment response in neovascular age-related macular degeneration.

To explore various methods for assessing the early response to vascular endothelial growth factor (VEGF) inhibitors for neovascular age-related macular degeneration and investigate their association with 3 year visual acuity (VA) outcomes.

Multiple-Choice Answer Form Completion Time in Children With Amblyopia and Strabismus.

Abnormal binocular experience during infancy or childhood from strabismus and/or anisometropia results in visual acuity deficits (eg, amblyopia) and impaired stereoacuity. These pediatric eye conditions have also been linked to slow reading and fine motor impairment.

Tessellated fundus appearance and its association with myopic refractive error.

The appearance of tessellated fundus in an eye may act as a marker in identifying visual performance, degree of myopia or risk of progression of myopia in a given eye. A systematic literature search using key words was performed using PubMed, Web of Science and Google Scholar and of the 832 studies identified, 10 full-length articles, which met the inclusion criteria, were considered for review. The primary outcome measures were association of tessellated fundus with: (i) visual acuity, (ii) refractive erro...

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