AnatomyDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPsychiatry and PsychologyPhenomena and ProcessesDisciplines and OccupationsTechnology, Industry, AgricultureInformation ScienceNamed GroupsHealth Care
Visual AcuityVision TestsVision DisordersEvoked Potentials, VisualVisual FieldsVisual CortexVisual PerceptionAmblyopiaVisual PathwaysEyeglassesCataract ExtractionRefractive ErrorsVision, LowFluorescein AngiographyCataractVitrectomyMacular EdemaContrast SensitivityVision, OcularVision ScreeningBlindnessTomography, Optical CoherenceRefraction, OcularMacula LuteaVisually Impaired PersonsFovea CentralisVisual Field TestsFundus OculiMacular DegenerationStrabismusPattern Recognition, VisualAstigmatismLens Implantation, IntraocularEye InjuriesRetinal DetachmentPhotic StimulationEye DiseasesIntravitreal InjectionsLaser CoagulationVision, BinocularMyopiaAnisometropiaPhacoemulsificationSensory DeprivationRetinaLenses, IntraocularDiabetic RetinopathyRetinal DiseasesElectroretinographyGlareKeratoconusEpiretinal MembraneRetinal PerforationsEye Injuries, PenetratingCorneal TopographyVitreous BodyVision, MonocularRetinal Vein OcclusionSensory ThresholdsChoroidal NeovascularizationTreatment OutcomeNystagmus, CongenitalFollow-Up StudiesNystagmus, PathologicCorneal DiseasesScotomaTriamcinolone AcetonideContact LensesColor Vision DefectsKeratoplasty, PenetratingRetrospective StudiesOphthalmologic Surgical ProceduresKeratomileusis, Laser In SituRetinitis PigmentosaOphthalmologyGlaucomaPupilMydriaticsFixation, OcularLasers, ExcimerOphthalmoscopyEye MovementsVitreous HemorrhageHyperopiaPresbyopiaSpace PerceptionDepth PerceptionPhotorefractive KeratectomyProspective StudiesPsychophysicsInjections, IntraocularNystagmus, OptokineticScleral BucklingAberrometryCorneal OpacityEndophthalmitisRetinoscopyPseudophakiaOptic AtrophyInjections
OutcomesIncrease in visual acuityRefractive errorsGood visual acuityDistance visual acuityImpairmentRetinalSnellenScotomaAbstractVernierBCVAStatistically significantStrabismusSubjectivelyFindingsPreoperativeAstigmatism2021Macular degenerationObjectiveAmblyopiaOphthalmologyContrastResultsSymptomsTestDifferencesReductionParticipantsAbnormal2017DisturbancesFieldWorseLossClinicalSevereSignificantlyPreferentialOcularPatternsGlassesPatientVisionChildren
Outcomes7
  • Early diagnosis and treatment initiation, particularly with VEGF agents, has been shown to improve visual and anatomic outcomes . (medscape.com)
  • Visual acuity outcomes after cataract surgery in patients with age-related macular degeneration: age-related eye disease study report no. 27. (emmes.com)
  • To evaluate visual acuity outcomes after cataract surgery in patients with varying degrees of age-related macular degeneration (AMD). (emmes.com)
  • Scholars@Duke publication: Assessment of Pediatric Optic Neuritis Visual Acuity Outcomes at 6 Months. (duke.edu)
  • There are limited prospective data for visual acuity (VA) outcomes, associated diseases, and neuroimaging findings. (duke.edu)
  • Indirect evidence supports the utility of multiple screening tests for identifying preschool children at higher risk for vision problems and the effectiveness of some treatments for improving visual acuity outcomes. (uspreventiveservicestaskforce.org)
  • Among 6311 peo- presenting visual acuity (PVA), as one of the health ple who were invited to participate in ShECS, 5190 (82.2%) outcomes that have a strong and fully proved relationship participated in the first phase of the study in 2009. (who.int)
Increase in visual acuity2
Refractive errors3
Good visual acuity2
Distance visual acuity1
Impairment8
  • Persistent serous retinal detachment in a patient with chronic CSC can lead to permanent visual impairment due to RPE decompensation and disruption of the photoreceptor ellipsoid zone [ 1 , 2 , 12 , 13 ]. (plos.org)
  • In clinical practice Cerebral Visual Impairment (CVI) is typically diagnosed by observation of abnormal visually guided behaviors which indicate higher visual function deficits (HVFDs) suggesting abnormal brain development or brain damage in a child with a suitable clinical history. (frontiersin.org)
  • Cerebral Visual Impairment (CVI) is a heterogenous disorder of brain-based visual impairment resulting from brain injury or disruption of development of retrochiasmatic visual pathways and vision processing regions of brain, commonly occurring during gestation at or around birth. (frontiersin.org)
  • Despite the efforts of United Nations agencies, national governments and nongovernmental organizations, increasing life expectancy means that the numbers of people with visual impairment are increasing. (who.int)
  • Visual impairment is both detrimental to the quality of life for the individual and an economic burden on the individual, family and society in general [1]. (who.int)
  • Recent years have seen a marked increase in laser-pointer-related injuries, which sometimes involve severe retinal damage and irreversible visual impairment. (aerzteblatt.de)
  • Laser pointers can cause persistent retinal damage and visual impairment. (aerzteblatt.de)
  • Visual impairment" was the most commonly reported adverse reaction, experienced by 635 (22.7%) of patients (7.2% of all reported eye-related symptoms). (smw.ch)
Retinal4
  • Therefore, in retinal diseases such as macular degeneration responses to hyperacuity stimuli may be abnormal long before any changes in visual acuity are observed. (wikipedia.org)
  • The spectrum of damage ranged from focal photoreceptor defects to macular foramina and retinal hemorrhages associated with loss of visual acuity and central scotoma. (aerzteblatt.de)
  • In our series of 7 cases, we documented impaired visual acuity, central visual field defects, circumscribed and sometimes complex changes of retinal reflectivity, and intraretinal fluid. (aerzteblatt.de)
  • This article presents data from a systematic literature review and describes the morphological and functional characteristics of retinal injury caused by laser pointers with prohibited power output levels in seven children. (aerzteblatt.de)
Snellen4
  • The visual acuity test is used to determine the smallest letters you can read on a standardized chart (Snellen chart) or a card held 20 feet (6 meters) away. (medlineplus.gov)
  • In a verbal patient, visual acuity may be assessed using optotypes (eg, Allen or Tellen cards, tumbling E or Snellen charts). (medscape.com)
  • Studies have shown that visual acuity measurements using a tumbling E chart are virtually the same as those obtained from testing with a standard Snellen eye chart. (allaboutvision.com)
  • On initial presentation, the best corrected visual acuity (BCVA) was less than 20/40 (Snellen equivalent) in 55% of the affected eyes and 20/20 or better in 9% of the affected eyes. (aerzteblatt.de)
Scotoma2
  • Preferential hyperacuity perimetry (PHP) is a psychophysical test used to identify and quantify visual abnormalities such as metamorphopsia and scotoma. (wikipedia.org)
  • Over time, visual acuity tended to improve, and scotoma subjectively decreased in size. (aerzteblatt.de)
Abstract1
  • it remains unclear to what extent the two species share more abstract representations of visual objects and scenes. (elifesciences.org)
Vernier3
  • We recorded SSVEPs in response to three types of visual motion - absolute motion and more complex relative and rotary motion, comparing them to form-related vernier and contour responses. (ski.org)
  • Vernier acuity, in keeping with good recognition acuity in both groups, was not different, nor were contour-related form responses. (ski.org)
  • PHP takes advantage of visual hyperacuity, also known as vernier acuity-the ability to identify the misalignment of visual objects. (wikipedia.org)
BCVA1
Statistically significant2
  • No statistically significant vital signs, visual field, visual acuity changes, or adverse events were detected in either group. (arvojournals.org)
  • Although the reported increase in myopia and decrease in visual acuity are statistically significant, the results of this study, while interesting, will have little impact on patient care and clinical decision-making," Dr. Stephen M. Lipsky, a spokesperson for the American Academy of Ophthalmology, told Reuters Health by email. (medscape.com)
Strabismus2
  • The most common causes of vision problems in children are amblyopia (a neurodevelopmental disorder that arises from abnormal processing of visual images that leads to a functional reduction of visual acuity) and its associated risk factors ( Table 1 ), nonamblyopic strabismus and nonamblyopic refractive error. (uspreventiveservicestaskforce.org)
  • The American Academy of Pediatrics (AAP) and American Association for Pediatric Ophthalmology and Strabismus (AAPOS) recommend the use of photo screening instruments in young children before they can successfully complete a chart-based visual acuity test. (hillrom.com.au)
Subjectively2
  • Visual acuity subjectively measures how well a child can see using a wall chart. (hillrom.com.au)
  • Once children can successfully perform a visual acuity test, usually around age 5, the policy recommends subjectively testing visual acuity with a chart-based screener. (hillrom.com.au)
Findings1
  • These findings reveal a fundamental limitation in the ability of mice to segment visual objects compared to primates. (elifesciences.org)
Preoperative1
  • The parameters evaluated in this study included diagnosis, comorbidity, preoperative and postoperative visual acuity (VA), complications, KPro retention, histological and immunohistochemical results of retroprosthetic membrane (RPM) and mucous membrane over the optic cylinder. (springer.com)
Astigmatism4
20211
Macular degeneration1
Objective2
  • The objective of the article is to draw attention to the potential hazard posed by laser pointers and to raise awareness of these dangers among children and adolescents in particular. (aerzteblatt.de)
  • The objective of this study was to assess whether alternating different tinted windshields would affect aging drivers' visual acuity and glare response. (elsevierpure.com)
Amblyopia1
Ophthalmology3
Contrast4
  • Visual acuity and contrast sensitivity. (medlineplus.gov)
  • What's more, anyone trying to split Orion's Theta stars under a dark sky will discover a visual impediment: the surrounding Orion Nebula, whose glow lowers the contrast of the gap between the two stars. (astronomy.com)
  • A total of 44 children (aged 3-15 years) presented with a first episode of ON (visual loss, pain on eye movements, or both) within 2 weeks of symptom onset and at least 1 of the following in the affected eye: a distance high-contrast VA (HCVA) deficit of at least 0.2 logMAR below age-based norms, diminished color vision, abnormal visual field, or optic disc swelling. (duke.edu)
  • The tests of visual acuity, contrast threshold, glare detection, and discomfort glare rating were performed to address the windshield effects on both the older and younger populations. (elsevierpure.com)
Results6
  • Visual acuity results were analyzed for 1939 eyes that had cataract surgery during AREDS. (emmes.com)
  • The calculation I used predicts a visual acuity distance of 36.4 inches for your display, so your results roughly correspond to the generalized rule. (carltonbale.com)
  • This EyeNet article reports the results of the 32 audience response questions, along with written commentary from the symposium presenters and panelists. (aao.org)
  • Initial results of uncontrolled studies suggested that optic nerve sheath decompression was a promising treatment of progressive visual loss in patients with NAION. (aetna.com)
  • The results indicated that alternating between the tested tinted windshields would not affect drivers' visual performance for both age groups. (elsevierpure.com)
  • Our results show that former low-birthweight newborns are more likely to be myopic and have reduced visual acuity in adulthood," Dr. Fiess told Reuters Health by email. (medscape.com)
Symptoms2
  • Serous neurosensory macular detachment in patients with CSC leads to visual symptoms involving metamorphopsia, blurred vision, and micropsia in a relatively young and middle-aged population [ 1 - 5 ]. (plos.org)
  • Data collected included eye-related complaints and diagnoses, self-assessed visual acuity, eye symptoms, use of protective gear during work, and attitudes toward eye protection gear. (cdc.gov)
Test9
  • The visual acuity test is a routine part of an eye examination or general physical examination, particularly if there is a change in vision or a problem with vision. (medlineplus.gov)
  • Eye charts can be configured in various ways, but generally, if during an eye test you can read the big E at the top but none of the letters lower than that, your visual acuity is considered to be 20/200. (allaboutvision.com)
  • Visual Acuity Challenge Test: Challenge your visual acuity with this intricate optical illusion puzzle. (chashmak.com)
  • Visual Acuity Challenge Test, Spot the Difference is a popular visual puzzle that challenges players to identify subtle discrepancies between two nearly identical images. (chashmak.com)
  • Visual Acuity Challenge Test, Engaging in the "Spot the Difference" puzzles can be a fun way to exercise your observation skills and provide a sense of accomplishment as you successfully identify each discrepancy. (chashmak.com)
  • Visual Acuity Challenge Test, Embrace the excitement of visual enigmas. (chashmak.com)
  • Visual Acuity Challenge Test, The intricacies of this illusion make it a formidable challenge, and as a result, we've included the image along with the commonly observed solution. (chashmak.com)
  • Visual Acuity Challenge Test, Examine the image carefully, focusing on the highlighted area. (chashmak.com)
  • Visual Perception Test, You can always view and study more brain teaser, intellectual games, puzzles and personality tests in the entertainment section of Chashmak Website . (chashmak.com)
Differences1
  • There is abundant evidence for differences in the organization of the visual system between primates and rodents. (elifesciences.org)
Reduction2
  • Longitudinal decomposition of this change in concentration indices during the 5-year period indicated that the most im- portant contributor to reduction in economic inequality of presenting visual acuity was deterioration of presenting visual acuity among people with higher economic status due to their ageing. (who.int)
  • Unexpectedly, reduction in economic inequality in presenting visual acuity was due to presenting visual acuity deterioration among the higher economic status group rather than its amelioration among the lower economic sta- tus group. (who.int)
Participants3
Abnormal1
  • In clinical practice, CVI is typically diagnosed in a child with a suitable clinical history by observation of abnormal visually guided behaviors (i.e., behaviors that rely on normal visual function) that suggest abnormal brain development or brain damage. (frontiersin.org)
20171
Disturbances1
  • Patients with epiblepharon suffer not only from tearing, photophobia, ocular irritation, frequent blinking of the eye, and foreign body sensation, but also from visual disturbances caused by corneal injury [ 3 ]. (ekjo.org)
Field6
  • The examinee's task is to perceive these artificial distortions and mark their locations on the visual field. (wikipedia.org)
  • Click through the PLOS taxonomy to find articles in your field. (plos.org)
  • IOP, best-corrected visual acuity, and visual field parameters were considered. (arvojournals.org)
  • Diamox, Lasix, corticosteroids), and disc swelling with visual field loss progresses, direct fenestration of the optic nerve sheaths via medial or lateral orbitotomy has been shown to be an effective and relatively simple procedure for relief of papilledema. (aetna.com)
  • Visual acuity and field of vision of urban and rural Egyptians. (cdc.gov)
  • 1969). Visual acuity and field of vision of urban and rural Egyptians. (cdc.gov)
Worse1
Loss4
  • The fact that these preferential losses occur in the absence of significant acuity loss indicates that they are not secondary to reduced visual acuity, but rather are an independent vulnerability in CVI. (ski.org)
  • however, early intervention for acute CSC has been advocated to prevent irreversible visual loss [ 9 , 10 ]. (plos.org)
  • Visual loss secondary to optic nerve drusen. (aetna.com)
  • The investigators concluded that optic nerve decompression surgery is not an effective treatment for NAION, and in fact, may increase the risk of progressive visual loss in NAION patients. (aetna.com)
Clinical2
  • This article is intended as a reference and not as a substitute for clinical judgment. (uspreventiveservicestaskforce.org)
  • This article may be used, in whole or in part, as the basis for the development of clinical practice guidelines and other quality enhancement tools, or as a basis for reimbursement and coverage policies. (uspreventiveservicestaskforce.org)
Severe1
Significantly1
  • The low-BW group had significantly lower visual acuity compared with the normal-BW group, though there were no difference between the normal-BW and high-BW groups, according to Dr. Achim Fiess of the University Medical Center of the Johannes Gutenberg University Mainz and colleagues. (medscape.com)
Preferential2
  • Deficits for complex motion but relative sparing of elementary motion and form-related signals suggests preferential damage to extra-striate visual motion areas in children with CVI. (ski.org)
  • Preferential hyperacuity perimetry (PHP) is a technology that bypasses filling-in and quantifies the extent of visual abnormalities. (wikipedia.org)
Ocular1
  • The hypothesis, he explained, is that prenatal growth restriction during organ development leads to ocular morphological and visual alterations in adulthood. (medscape.com)
Patterns1
  • The authors show a major difference in the ability of mice and primates in detecting figures from ground based on motion and texture patterns, revealing a fundamental limitations of mice in segmenting visual scenes. (elifesciences.org)
Glasses1
Patient1
  • Although significant, the improvement in VA observed within individuals at the null zone is much smaller than might be expected from the occasionally large variations in intensity and foveation dynamics (and anecdotal patient reports of improved vision), suggesting that improvement of other aspects of visual performance may also encourage use of the null zone. (cardiff.ac.uk)
Vision3
  • Visual Acuity is the clarity or sharpness of vision. (aoa.org)
  • While both conditions are similar and can affect vision, they are distinct visual issues. (medicalnewstoday.com)
  • Visual acuity screening can also detect non-refractive vision problems that may be caused by problems with the retina, eye structure or neurological connection between the eye and the brain. (hillrom.com.au)
Children2
  • HVFDs in our study group could mostly be attributed to dorsal stream visual processing dysfunction though the spectrum varied between children. (frontiersin.org)
  • Using visual acuity criterion alone is likely to miss a large proportion of children with HVFDs and a diagnosis of CVI should be based on the combined presence of multiple factors with reduced visual acuity being a contributory but not the defining criteria. (frontiersin.org)