Logo Medical Science Monitor

Call: +1.631.470.9640
Mon - Fri 10:00 am - 02:00 pm EST

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

01 August 2005

Evaluation of a chromatometer: a new method for blue-yellow or green-red visual comparisons, and anomaly screening techniques.

Jean Gaudart, Jean-Pierre Pétrakian

Med Sci Monit 2005; 11(8): MT39-52 :: ID: 202382

Abstract

Background: Malbrel's chromatometer is a new apparatus which allows colorvision to be monitored. The aim of this study was to assess the accuracy of this new examination method.Material/Methods: The color vision of a patient was analyzed using a chromatometer for direct heterochromaticvisual comparisons. The patient's task was to adjust, using one eye only, the brightness of a yellow(or red) window to the one of a fixed blue (or green) window. Overall, 158 patients, aged 20 to 28, tookpart in the experiment. First, parametric means were used to study the response distributions and theluminous effects on the responses. Second, using non-parametric means, we considered that a patient hadan anomalous color vision according to the chromatometer if the response was higher than the 95(th) percentileor lower than 5(th) percentile. Third, anomalous responses were compared with the Ishihara plates andFarnsworth 28-hue responses. Results: The effect of a luminous stimulus on the response was significant(adjusted to the patient effect). Thus, the chromatometer appears to be a good method to analyze colorvision. This apparatus was easy to use and constituted a sensitive and specific test with high negativepredictive value. Conclusions: The chromatometer can be used as a first-line screening test to detectcolor vision anomalies during ophthalmology consultations. The chromatometer can be useful in identifyingearly ocular disease, monitoring disease development, or checking possible iatrogenic effects of a specifictreatment.

Keywords: Color Perception Tests - methods, Color Vision Defects - diagnosis, Color Perception - physiology, Color Perception Tests - methods, Color Vision Defects - diagnosis, Sensitivity and Specificity

Add Comment 0 Comments

Editorial

01 February 2024 : Editorial  

Editorial: Global Health Concerns as Vaccine-Preventable Infections Including SARS-CoV-2 (JN.1), Influenza, Respiratory Syncytial Virus (RSV), and Measles Continue to Rise

Dinah V. Parums

DOI: 10.12659/MSM.943911

Med Sci Monit 2024; 30:e943911

0:00

In Press

08 Feb 2024 : Clinical Research  

Predictors of Mortality in Veterans with Amyotrophic Lateral Sclerosis: Respiratory Status and Speech Disor...

Med Sci Monit In Press; DOI: 10.12659/MSM.943288  

0:00

25 Feb 2024 : Clinical Research  

Patterns and Outcomes of Traumatic Suicides: A Retrospective Study of 132 Patients Admitted to a Turkish Me...

Med Sci Monit In Press; DOI: 10.12659/MSM.943505  

0:00

01 Feb 2024 : Review article  

Review of the Evaluation of Pulmonary Hypoplasia as an Important Determinant of Clinical Outcomes in Infant...

Med Sci Monit In Press; DOI: 10.12659/MSM.943259  

0:00

19 Feb 2024 : Clinical Research  

Diagnostic Accuracy of Ileocolic Artery and Vein Diameter for Acute Appendicitis

Med Sci Monit In Press; DOI: 10.12659/MSM.943846  

Most Viewed Current Articles

16 May 2023 : Clinical Research  

Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...

DOI :10.12659/MSM.940387

Med Sci Monit 2023; 29:e940387

0:00

17 Jan 2024 : Review article  

Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron Variant

DOI :10.12659/MSM.942799

Med Sci Monit 2024; 30:e942799

0:00

14 Dec 2022 : Clinical Research  

Prevalence and Variability of Allergen-Specific Immunoglobulin E in Patients with Elevated Tryptase Levels

DOI :10.12659/MSM.937990

Med Sci Monit 2022; 28:e937990

0:00

01 Jan 2022 : Editorial  

Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...

DOI :10.12659/MSM.935952

Med Sci Monit 2022; 28:e935952

0:00

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750