Our aim in this study was to prove influence of chromagen filter on color vision quality. Further we wanted to compare quality of color vision in groups of young healthy persons with persons with maculopathy. In our study we had in total 39 subjects. First group contained 13 subjects with average age 23 years without important eye pathology. In the second group we had 13 patients (average age 68 years) with maculopathy. Third group contained subjects with average age 64 years without important eye pathology. While examination we used sorting tests for color vision: Farnsworth-Munsell test and Lanthony test. Results were evaluated according the Vingryse and King-Smith technique. We found that average total error score (TES) in young healthy subjects with color chromagen filter doesnt differ from TES value gained from patients with disease of macula (p = 0.86). Further we found that chromagen filter changes color vision in group of young subjects on statistical significant level (p = 0.01). But in clinical view this is not important color vision defect (TES = 107.46 and CI = 1.42). Next study result showed statistically not important difference between the color vision in young healthy patient (average age 23 years) and older healthy patients with average age 64 years (p = 0.58). Finally we can conclude that green color chromagen filter doesnt have negative influence for dyslectic patients who will use this filter all day. Further we proved that color vision deterioration of patients with macular disease is not important for practical distinguishing of colors but is important clinically for diagnostic purposes. Last but not least we brought result which shows not important difference between young healthy subjects and older subjects (23 versus 64 years).Key words: Color vision, chromagen lens, total error score, maculopathy.
- MeSH
- barva MeSH
- dospělí MeSH
- lidé MeSH
- macula lutea * MeSH
- mladý dospělý MeSH
- poruchy barevného vidění * MeSH
- senioři MeSH
- testy barvocitu MeSH
- vidění barevné * MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mladý dospělý MeSH
- senioři MeSH
- Publikační typ
- časopisecké články MeSH
UNLABELLED: Our aim was to develop quick and exact instrument for examination of color vision defects (CVD). We used Lanthony saturated and desaturated test. Data were evaluated according the Vingrys and King-Smith study. We had together 123 eyes of 86 patients. From all subjects we received these average values: AA 44.32 (min -87.13, max 80.64), TES 13.36 (min 8.84, max 30.30), SI 1.97 (min 1.22, max 5.69) and CI 1.66 (min 1.0, max 3.94). At the base of counting algorithm and average values form saturated and desaturated test we revealed 25 (29 %) patients with CVD. Twelve patients (14 %) classified as CVD+ had dichromacy and all had inborn CVD. Eight patients (9 %) from this group had deutranopia and four patient (5 %) protanopia. Anomaly trichromacy we revealed in thirteen patients (15 %). Eight (9 %) of these patients had inborn CVD. Six (7 %) of these patients had protanomalia, one (1 %) had deuteranomalia and one tritanomalia. We established and specified TES, CI and SI critical values, which was used to dividing patients into specific groups. KEY WORDS: Lanthony test, color vision defect, index of selectivity, index of confusion, total error score.
- MeSH
- dospělí MeSH
- interpretace statistických dat MeSH
- lidé středního věku MeSH
- lidé MeSH
- poruchy barevného vidění diagnóza MeSH
- reprodukovatelnost výsledků MeSH
- testy barvocitu přístrojové vybavení MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
The number of L cones in the retina normally exceeds that of the M cones. Because normal color vision does not depend on the ratio of L- and M-photoreceptors, their signals must undergo an alteration in gain before being analyzed in the cortex. Previous studies have shown that this gain must take place before the cortex, but after the bipolar/amacrine cell layer of the retina. The aim of this study was to obtain topographical information about L- and M-cone activity at the ganglion cell layer using multifocal pattern electroretinography (mfPERG). A standard (black and white) stimulus was used, as well as stimuli modulating only the long wavelength-sensitive (L) or only the middle wavelength-sensitive (M) cones. The L:M ratio was calculated from the amplitude of the L-cone isolating mfPERG to that of the M-cone isolating mfPERG of 10 trichromats. Both the positive and negative components of the waveform were analyzed. Additional recordings of single cone modulated mfERGs were obtained from nine of the 10 subjects. We also recorded from one protanope and one deuteranope. The L:M cone amplitude ratios for both deflections of the mfPERG in the trichromats were around unity (medians 1.18 and 1.16, respectively) for the central 8 degrees of retina. In the peripheral retina between 12.8 degrees and 26 degrees , this ratio increased to 1.42 for the positive component, and 1.37 for the negative component. The median L:M cone amplitude ratios for the mfPERG were higher and ranged between 1.00-2.78 in the central 8 degrees and 1.29-2.78 in the periphery. The results indicate that a major gain adjustment of the retinal signals takes place at the ganglion cell level, and that the ratio is higher at eccentric locations than in the central retinal area.
- MeSH
- barva MeSH
- čípky retiny patofyziologie MeSH
- citlivost na kontrast fyziologie MeSH
- dospělí MeSH
- elektroretinografie * MeSH
- lidé MeSH
- poruchy barevného vidění patofyziologie MeSH
- psychofyzika MeSH
- reakční čas MeSH
- senzorické prahy fyziologie MeSH
- světelná stimulace metody MeSH
- testy barvocitu MeSH
- vnímání barev MeSH
- zraková pole fyziologie MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Disturbances of colour visual discrimination have been shown to occur frequently in Parkinson's disease (PD). To verify the potential utility of reduced colour sensitivity as a diagnostic marker of early PD, we examined 14 PD patients, mean age 55.4 years, disease duration 2.3 years, in Hoehn and Yahr stages 1, 1.5, or 2, previously untreated with levodopa. Colour discrimination was measured with the Farnsworth-Munsell 100-hue test in patients who were compared with age-matched controls. The examinations were performed under standard conditions in a room illuminated by a daylight lamp Biolux Osram 6500 K. The mean total error score (MTES) and partial error scores (green-yellow and red-green axis) were calculated for every person examined. No significant differences were found between PD patients (MTES 49.1 +/- SD 37) and controls (MTES 37.9 +/- SD 25). Similarly, the mean partial scores were not significantly elevated in PD patients. We found an elevation of error scores exceeding the upper limit of normality (control mean + 2SD) only in three patients. We conclude that colour visual discrimination is not consistently impaired in early stages of PD and does not appear as a reliable early marker of Parkinson's disease.
- MeSH
- biologické markery analýza MeSH
- diferenciální diagnóza MeSH
- dospělí MeSH
- falešně negativní reakce MeSH
- lidé středního věku MeSH
- lidé MeSH
- Parkinsonova nemoc komplikace diagnóza MeSH
- prediktivní hodnota testů MeSH
- senioři MeSH
- senzitivita a specificita MeSH
- testy barvocitu MeSH
- vnímání barev * MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- hodnotící studie MeSH
- práce podpořená grantem MeSH
- Názvy látek
- biologické markery MeSH
The author investigated changes of colour sensitivity of red, green and blue, using the FM 100-hue test. For examination healthy subjects without hypertension and diabetes and with a normal ophthalmological finding and normal functions were selected. In six age groups (21-80 years) 240 male and female eyes were examined. In the youngest age group there was greatest proportion of errors in the blue area, less in the green area and the least in the red area. A more detailed analysis revealed that the greatest rate of errors was in the blue-green area. With advancing age the number of errors in the areas of the basic colours increase and at the same time differences between differentiation of red, green and blue decrease. In the age group above 71 years no differences were found in the score of errors in the area of basic colour.
- MeSH
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- senioři MeSH
- stárnutí fyziologie MeSH
- testy barvocitu MeSH
- vnímání barev * MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- anglický abstrakt MeSH
- časopisecké články MeSH
The authors investigated colour differentiation, using the FM 100-hue test in healthy subjects without hypertension and diabetes and with a normal ophthalmological finding and normal functions. They examined 120 subjects, i.e. 240 eyes--120 male eyes and 120 female eyes in six decades from 21-80 years. The examination revealed a significant diminution of colour differentiation with advancing age but no difference in colour differentiation between men and women. The tests can be considered at the same time a basic orientation standard for evaluation of colour differentiation.
- MeSH
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- senioři MeSH
- stárnutí fyziologie MeSH
- testy barvocitu MeSH
- vnímání barev * MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- anglický abstrakt MeSH
- časopisecké články MeSH
The authors compare colour differentiation of 30 phakic and 30 pseudophakic eyes, using the Farnsworth-Munsell 100-hue test. No significant difference was found between the two groups as regards differentiation of colours although theoretically it could be expected that colour differentiation will be better in eyes with a synthetic intraocular lens. The factor which has the greatest influence on colour sense is the subject's age.
- MeSH
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- nitrooční čočky * MeSH
- senioři MeSH
- testy barvocitu MeSH
- vnímání barev * MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- senioři MeSH
- Publikační typ
- anglický abstrakt MeSH
- časopisecké články MeSH
The author presents an account on the results of examinations of colour vision in patients with ocular hypertension and open angle glaucoma using three tests according to Farnsworth-Munsell (100 Hue test, Roth's 28 Hue test, Lanthony's desaturated panel D-15). He proves significant deterioration of colour differentiation in groups of patients with glaucoma and ocular hypertension as compared with a reference group and within the group. Although there is deterioration of colour differentiation in the entire spectrum, disorders in the blue-yellow and blue-green area predominate.
- MeSH
- dospělí MeSH
- glaukom s otevřeným úhlem komplikace patofyziologie MeSH
- lidé středního věku MeSH
- lidé MeSH
- oční hypertenze komplikace patofyziologie MeSH
- poruchy barevného vidění komplikace diagnóza MeSH
- testy barvocitu MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- Publikační typ
- anglický abstrakt MeSH
- časopisecké články MeSH
- MeSH
- lidé MeSH
- poruchy barevného vidění diagnóza MeSH
- testy barvocitu přístrojové vybavení MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- anglický abstrakt MeSH
- časopisecké články MeSH
