scholarly journals Color vision defect in patients with tuberculosis receiving Ethambutol treatment

2020 ◽  
Vol 15 (2) ◽  
Author(s):  
Suntaree Thitiwichienlert ◽  
Chonwarat Phattarapongdilok
Keyword(s):  
Color Vision ◽  
Color Vision Defect ◽  
Vision Defect

scholarly journals The burden of color vision defect in Nepal – an iceberg phenomenon

2019 ◽  
Vol 9 (4) ◽  
pp. 69-71
Author(s):  
Anadi Khatri ◽  
Bal Kumar K.C ◽  
Sudhir Gautam ◽  
Muna Kharel
Keyword(s):  
Color Vision ◽  
Early Stage ◽  
Descriptive Analysis ◽  
School Level ◽  
Color Vision Defect ◽  
Vision Defect ◽  
Color Vision Defects ◽  
Color Vision Test ◽  
Sequential Group ◽  
Vision Defects

Background: Color vision tests are routinely performed and are mandatory in most part of the world. However, in Nepal and many other developing countries, color vision may often be overlooked. We evaluated a possible burden of color vision in a group of patients who were specifically evaluated for a color vision defects. This study evalutes the awareness of color vision defect among the patients evaluated and highlights the importance of the color vision evaluation. Methods: A sequential group of 73 people from August to September 2017 specifically evalu­ated for color vision defect for recruitment of government employment were evaluated. Ishi­harapseudo-isochromatic plates and Farnsworth-Munsell Dichotomous D-15 test were used for screening. Mean and Standard deviation were used for descriptive analysis of the data. Results: Fifty-seven were male and sixteen were female. The mean age was 23 years (SD ± 3.7). On evaluation of the color vision defect, 9 (12.3%) were found to have total color vision defect (achromatopsia), 3 (4%)-red-green defect and 1(1%) with blue red defect. None of the patients had undergone color vision test at eye hospital previously. There were 4 patients who were registered drivers who had color vision defect. Conclusions: Color vision is an important part of the vision. It should not be ignored.All of the patients evaluated were found to be unware of their condition. Early detection of color vision defects in individuals, if possible, at school level can help them to determine their careers and future endeavors at early stage.

Unique haplotype in exon 3 of cone opsin mRNA affects splicing of its precursor, leading to congenital color vision defect

2012 ◽  
Vol 424 (1) ◽  
pp. 152-157 ◽  
Author(s):  
Hisao Ueyama ◽  
Sanae Muraki-Oda ◽  
Shinichi Yamade ◽  
Shoko Tanabe ◽  
Takahiro Yamashita ◽  
...  
Keyword(s):  
Color Vision ◽  
Unique Haplotype ◽  
Color Vision Defect ◽  
Cone Opsin ◽  
Vision Defect

Repeatability indices for the Farnsworth D-15 test

2004 ◽  
Vol 21 (3) ◽  
pp. 449-453 ◽  
Author(s):  
JEFFERY K. HOVIS ◽  
SHANKARAN RAMASWAMY ◽  
MATTHEW ANDERSON
Keyword(s):  
Color Vision ◽  
Kappa Coefficient ◽  
Clinical Population ◽  
Perfect Agreement ◽  
Green Color ◽  
Color Vision Defect ◽  
Vision Defect ◽  
Subject Pool ◽  
Color Vision Test ◽  
Test Result

The repeatability of the D-15 color-vision test is considered to be excellent. However, this conclusion is based on a subject pool which contained a large percentage of color-normals. This type of sampling could bias the repeatability results because color-normals rarely fail the test. Furthermore, color-normals usually do not perform the D-15 in the clinical setting. To establish the repeatability of the D-15 for a relevant clinical population, we examined the D-15 results from two different sessions for 116 subjects who had a congenital red–green color-vision defect. The kappa coefficient for intersession agreement indicated that approximately 84% of the subjects obtained the same pass/fail results at both sessions. The type of defect was repeatable on approximately 80% of the subjects. Although the repeatability of the D-15 for color-defective subjects was good, it was lower than the near-perfect agreement reported previously. The coefficients of repeatability for the crossings show that if a person makes less than five crossings then the test should be administered again in order to ensure that the test result is repeatable.

Validity of the Worth 4 Dot Test in Patients with Red-Green Color Vision Defect

2017 ◽  
Vol 94 (5) ◽  
pp. 626-629 ◽  
Author(s):  
Eunoo Bak ◽  
Hee Kyung Yang ◽  
Jeong-Min Hwang
Keyword(s):  
Color Vision ◽  
Green Color ◽  
Color Vision Defect ◽  
Vision Defect

An artist with a color vision defect: Charles meryon

1995 ◽  
Vol 39 (5) ◽  
pp. 403-408 ◽  
Author(s):  
James Ravin ◽  
James G. Ravin ◽  
Nancy Anderson ◽  
Philippe Lanthony
Keyword(s):  
Color Vision ◽  
Color Vision Defect ◽  
Vision Defect
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