Investigation of relationship between colour discrimination ability and stereoscopic acuity using Farnsworth Munsell 100 hue test and stereo tests

• Published in: Canadian journal of ophthalmology 2020-04, Vol.55 (2), p.131-136
• Main Authors: Koctekin, Belkis, Coban, Deniz Turgut, Ozen, Mehmet, Tekindal, Mustafa Agah, Unal, Ayse Cengiz, Altintas, Ayse Gul Kocak, Gundogan, Nimet Unay
• Format: Article
• Language: English
• ISSN: 0008-4182; 1715-3360
• DOI: 10.1016/j.jcjo.2019.07.013

To evaluate the effect of colour discrimination ability on the stereoscopic acuity by comparing individuals having congenital colour vision deficiency (CCVD) with healthy individuals. A comparative study. The study included 53 binocular males, of whom 26 (mean age, 36.04 ± 9.30 years) were in the healthy group and 27 (mean age, 33.04 ± 9.81 years) were in the CCVD group. The following tests were used: the Ishihara pseudo-isochromatic plate test for detecting CCVD, the Farnsworth Munsell 100 (FM100) hue test for colour discrimination ability, the TNO and Titmus stereo tests for stereoscopic acuity. In the CCVD group, 20 males were deutan and 7 males were protan. According to the FM100 hue test, total error score (TES), blue/yellow (b/y) local error score (LES), and red/green LES were significantly lower in the healthy group (30.23 ± 18.78, 15.15 ± 10.38, and 13.88 ± 11.93, respectively) than in the CCVD group (133.59 ± 67.45, 41.15 ± 22.03, and 89.15 ± 52.16, respectively) (p < 0.01 for each). The stereo test scores revealed significantly higher stereoscopic acuity in the healthy group (43.85 ± 33.92 arcsec for the TNO test and 40.00 ± 0.00 arcsec for the Titmus test) than in the CCVD group (93.33 ± 90.51 arcsec for TNO stereo test and 52.96 ± 24.62 arcsec for the Titmus test) (p < 0.05 for each). The TNO test score was significantly and positively correlated with the TES (r = 0.390, p = 0.049) and b/y LES (r = 0.490, p = 0.011) in the healthy group. Colour discrimination ability affected stereoscopic acuity. Moreover, stereoscopic acuity increased with increasing colour discrimination ability, which could be originated from the b/y colour region. Évaluer l'effet de l'acuité chromatique sur l'acuité stéréoscopique en comparant des sujets présentant un daltonisme congénital (DC) et des sujets sains. Étude comparative. L'étude regroupait 53 hommes dotés d'une vision binoculaire: 26 (âge moyen: 36,04 ± 9,30 ans) formaient le groupe de sujets sains et 27 (âge moyen: 33,04 ± 9,81 ans) formaient le groupe DC. Ont été utilisés les tests suivants: la planche pseudo-isochromatique d'Ishihara pour déceler le DC, le test Farnsworth-Munsell 100 Hue (FM100) pour mesurer l'acuité chromatique ainsi que le test du TNO et le test stéréoscopique de Titmus pour mesurer l'acuité stéréoscopique. Dans le groupe DC, 20 sujets présentaient un daltonisme de type deutane et 7, un daltonisme de type protane. Selon le FM100, le score total d'erreurs, le score partiel bleu/jaune (b/j)