The Correlation Between Visual Acuity and Color Vision as an Indicator of the Cause of Visual Loss

Almog, Yehoshua; Nemet, Arie Y.

doi:10.1016/j.ajo.2010.01.011

Cited by 33 publications

(31 citation statements)

References 15 publications

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“…The Farnsworth color discrimination test is one of the tests to assess color discrimination, so as to separate patients with normal color vision separated into superior, medium and low color discriminations [12][13][14][15][16][17][18][19][20]. Scores or error values are calculated based on the distance between errors two panels.…”

Section: Discussionmentioning

confidence: 99%

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The Relationship Between Lens Opacities and Color Discrimination Ability in Cataract Patients

Solahuddin

Theodorus

Ariani

2018

Asian J Pharm Clin Res

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Objective: To determine the relationship between lens opacities and color discrimination ability in cataract patients at the Special Eye Hospital in Palembang.Methods: A case study was undertaken in January to March 2017 at the Special Eye Hospital in Palembang. There were 80 cataract patients who met the inclusion and exclusion criteria. The relationship between lens opacities and color discrimination ability was analyzed using Spearman rho correlation test using SPSS version 18.0.Results: About 51.2% out of 80 cataract patients, most patients were diagnosed with nucleotide cataract with the majority degree of opacities is Grade III (50%). Average of total error score was 51.425±51, 441 (range 0-312). The correlation test results showed a significant weak positive correlation between lens opacities and color discrimination ability (r=0.376; p=0.001; n=80) where the percentage of effect of lens opacities to color discrimination ability was only 7.9% (R 2 =0.079). Conclusion:There was a significant weak positive correlation between lens opacities and color discrimination ability.

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Section: Discussionmentioning

confidence: 99%

“…Scores or error values are calculated based on the distance between errors two panels. The sum of the error values of the entire set of panels is the TES [12][13][14][15][16][17][18][19][20][21].…”

Section: Discussionmentioning

confidence: 99%

The Relationship Between Lens Opacities and Color Discrimination Ability in Cataract Patients

Solahuddin

Theodorus

Ariani

2018

Asian J Pharm Clin Res

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“…There is evidence that patches are specialized for the processing of color information (Livingstone and Hubel, 1984; Lu and Roe, 2008). Relative sparing of patches could explain why color perception seems to be impaired less severely than spatial resolution in patients with amblyopia (Mangelschots et al, 1996; Almog and Nemet, 2010). However, there is some doubt that color and form are handled by largely segregated cell populations in V1, implying that color processing may not be limited to patches (Gegenfurtner and Kiper, 2003; Shapley and Hawken, 2011).…”

Section: Discussionmentioning

confidence: 99%

Neuronal Projections from V1 to V2 in Amblyopia

Sincich

Jocson²,

Horton³

2012

J. Neurosci.

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The mechanism of amblyopia in children with congenital cataract is not understood fully, but studies in macaques have shown that geniculate synapses are lost in striate cortex (V1). To search for other projection abnormalities in amblyopia, the pathway from V1 to V2 was examined using a triple-label technique in 3 animals raised with monocular suture. [3H]proline was injected into one eye to label the ocular dominance columns. Cholera toxin B-gold (CTB-Au) was injected in V2 to label V1 projection neurons. Alternate sections were processed for cytochrome oxidase (CO) and CTB-Au, or dipped for autoradiography. Eight fields of CTB-Au-labeled cells in V1 opposite injection sites were plotted in layers 2/3 or 4B. After thin stripe injection, labeled cells were concentrated in CO patches. Despite column shrinkage, cells in deprived and normal columns were equal in size and density, in both layer 2/3 and 4B. After pale or thick stripe injection, labeled cells were concentrated in interpatches. Only 23% of projection neurons originated from deprived columns. This reduction exceeded the degree of column shrinkage, a result explained by the fact that column shrinkage causes disproportionate loss of interpatch territory. These data indicate that early monocular form deprivation does not alter the segregation of patch and interpatch pathways to V2 stripes, or cause selective loss or atrophy of V1 projection neurons. The effect of shrinkage of geniculocortical afferents in layer 4C following visual deprivation is not amplified further by attenuation of the amblyopic eye’s projections from V1 to V2.

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“…The smallest optotype the participant correctly identifies when standing a standard distance from the chart indicates their VA, which is measured in imperial units (e.g., 20/20 for normal vision), metric units (e.g., 6/6 for normal vision) or logMAR units (e.g., 0.0 for normal vision). VA does not reflect all aspects of vision, and may be normal in the presence of visual field defects, color blindness, mild amblyopia, visual processing disorders, and/or low contrast sensitivity, among other visual problems (3)(4)(5)(6).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of how well different pure-tone threshold and visual acuity measures reflect self-reported sensory ability and treatment uptake: An analysis of the Canadian Longitudinal Study on Aging

Mick¹,

Hämäläinen²,

Pichora‐Fuller³

et al. 2019

Preprint

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In epidemiology studies, researchers may choose to use summary scores of hearing or visionbased on self-report or clinical measures. Self-report and clinical measures may yield differentclassifications. Of the possible clinical measures, there is no consensus regarding which puretonethreshold average (PTA) or visual acuity (VA) measures are optimal. We aimed todetermine how well different PTAs and VA measures predicted self-reported measures ofsensory function. A cross-sectional analysis of 30,097 Canadians aged 45-85 years participatingin wave 1 of the Canadian Longitudinal Study on Aging in 2012-2015 was performed. Wecalculated the area under the receiver operating characteristic curves (AUC) for 9 different PTAsand 6 different VA measures. In the analysis of the PTAs, the classifiers used as comparatorsincluded self-reports of hearing and hearing aid use. In the analysis of the VA measures,comparators were self-reports of vision, and corrective lens use. The top-ranked PTA was thebinaural mid-frequency PTA (i.e., the average of hearing thresholds at 1000, 2000, 3000 and4000 Hz in both ears). The top-ranked VA measure was the average pinhole-corrected VA inboth eyes. These measures are not commonly used, but should be considered for epidemiologicalresearch.

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The Correlation Between Visual Acuity and Color Vision as an Indicator of the Cause of Visual Loss

Cited by 33 publications

References 15 publications

The Relationship Between Lens Opacities and Color Discrimination Ability in Cataract Patients

The Relationship Between Lens Opacities and Color Discrimination Ability in Cataract Patients

Neuronal Projections from V1 to V2 in Amblyopia

Evaluation of how well different pure-tone threshold and visual acuity measures reflect self-reported sensory ability and treatment uptake: An analysis of the Canadian Longitudinal Study on Aging

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