Human brain compensates for age-related color vision loss

Physics Today ◽  
2013 ◽  
Keyword(s):  
Human Brain ◽  
Color Vision ◽  
Vision Loss ◽  
Age Related ◽  
Color Vision Loss

scholarly journals Assessing the Severity of Color Vision Loss with Implications for Aviation and Other Occupational Environments

2012 ◽  
Vol 83 (1) ◽  
pp. 19-29 ◽  
Author(s):  
Marisa Rodriguez-Carmona ◽  
Matilda O’Neill-Biba ◽  
John L. Barbur
Keyword(s):  
Color Vision ◽  
Vision Loss ◽  
Color Vision Loss

scholarly journals Color vision loss in patients treated with chloroquine

2003 ◽  
Vol 66 (5) ◽  
pp. 9-15 ◽  
Author(s):  
Dora F. Ventura ◽  
Luiz Carlos L. Silveira ◽  
Mauro Nishi ◽  
Marcelo F. Costa ◽  
Mirella Gualtieri ◽  
...  
Keyword(s):  
Color Vision ◽  
Vision Loss ◽  
Color Vision Loss

scholarly journals Color Vision in the Gas Station Workers of Isfahan City: A Quantitative Analysis With the Farnsworth D15 Color Test

2021 ◽  
Vol 15 (3) ◽  
pp. 179-184
Author(s):  
Asieh Sadat Sedighi ◽  
◽  
Ali Mirzajani ◽  
Ebrahim Jafarzadehpur ◽  
Jamileh Abolghasemi ◽  
...  
Keyword(s):  
Color Vision ◽  
Vision Loss ◽  
Study Groups ◽  
Control Group ◽  
Color Test ◽  
Cross Sectional ◽  
Color Vision Defects ◽  
Gas Station ◽  
Vision Defects ◽  
Color Vision Loss

Background and Objectives: The color vision evaluation of gas station workers in Isfahan City. Methods: This cross-sectional comparative study was performed on workers at gas stations in Isfahan; all the workers were men. The participants were divided into two 40-people groups of exposure and non-exposure (the members of the fuel sales department). The participants had better vision than 8/10 and no underlying problems or eye disease. Besides, examination, including color vision was performed for all subjects. Color vision was assessed using the D15 test under high to medium light conditions. Also, the color vision test was performed monocularly. Then, the obtained data were analyzed using SPSS V. 22. Results: The two study groups significantly differed in terms of color vision impairment index (P <0.001). Also, more color vision defects were seen in the group exposed to gasoline. The color confusion index (as the indicator of color vision defects) were 1.485 and 1.129 in exposure and non-exposure to gasoline groups, respectively. Thus, color vision defects were significantly higher in the exposure to gasoline group, compared with the control group. Conclusion: The results of this study showed a difference in color vision index between the two groups. Therefore, long-term exposure to organic solvents, such as gasoline in fuel stations may cause color vision loss.

Reversible Color Vision Loss in Occupational Exposure to Metallic Mercury

1998 ◽  
Vol 77 (2) ◽  
pp. 173-177 ◽  
Author(s):  
Alessandro Cavalleri ◽  
Fabriziomaria Gobba
Keyword(s):  
Occupational Exposure ◽  
Color Vision ◽  
Vision Loss ◽  
Metallic Mercury ◽  
Color Vision Loss

Multifocal and full-field electroretinogram changes associated with color-vision loss in mercury vapor exposure

2004 ◽  
Vol 21 (3) ◽  
pp. 421-429 ◽  
Author(s):  
DORA F. VENTURA ◽  
MARCELO T.V. COSTA ◽  
MARCELO F. COSTA ◽  
ADRIANA BEREZOVSKY ◽  
SOLANGE R. SALOMÃO ◽  
...  
Keyword(s):  
Color Vision ◽  
Vision Loss ◽  
Color Discrimination ◽  
Mercury Vapor ◽  
Oscillatory Potentials ◽  
Retinal Function ◽  
Mercury Contamination ◽  
Central Field ◽  
Full Field ◽  
Color Vision Loss

We evaluated the color vision of mercury-contaminated patients and investigated possible retinal origins of losses using electroretinography. Participants were retired workers from a fluorescent lamp industry diagnosed with mercury contamination (n= 43) and age-matched controls (n= 21). Color discrimination was assessed with the Cambridge Colour Test (CCT). Retinal function was evaluated by using the ISCEV protocol for full-field electroretinography (full-field ERG), as well as by means of multifocal electroretinography (mfERG). Color-vision losses assessed by the CCT consisted of higher color-discrimination thresholds along the protan, deutan, and tritan axes and significantly larger discrimination ellipses in mercury-exposed patients compared to controls. Full-field ERG amplitudes from patients were smaller than those of the controls for the scotopic responseb-wave, maximum response, sum of oscillatory potentials (OPs), 30-Hz flicker response, and light-adapted cone response. OP amplitudes measured in patients were smaller than those of controls for O2 and O3. Multifocal ERGs recorded from ten randomly selected patients showed smaller N1–P1 amplitudes and longer latencies throughout the 25-deg central field. Full-field ERGs showed that scotopic, photopic, peripheral, and midperipheral retinal functions were affected, and the mfERGs indicated that central retinal function was also significantly depressed. To our knowledge, this is the first demonstration of retinal involvement in visual losses caused by mercury toxicity.

Two-Year Evolution of Perchloroethylene-lnduced Color-Vision Loss

1998 ◽  
Vol 53 (3) ◽  
pp. 196-198 ◽  
Author(s):  
Fabriziomaria Gobba ◽  
Elena Righi ◽  
Guglielmina Fantuzzi ◽  
Guerrino Predieri ◽  
Lucia Cavazzuti ◽  
...  
Keyword(s):  
Color Vision ◽  
Vision Loss ◽  
Color Vision Loss
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