Abstract

DO.17.04

Acquired colour vision disturbances in patients with occlusive arterial disease without and with coronary artery disease

Carl Erb1,2, Eva-Maria Fischer2, S. Lichtenberg3, H. Drexler3
1Abteilung für Augenheilkunde, Schlosspark-Klinik, Berlin; 2Abteilung für Augenheilkunde, Medizinische Hochschule Hannover, Hannover; 3Abteilung Kardiologie und Angiologie, Medizinische Hochschule Hannover

Objective
Aim of the study was to examine whether patients with an occlusive arterial disease (OAD) have acquired colour vision disturbances and whether a coronary heart disease (CHD) has an influence to the results.
Methods
The ophthalmological examination includes morphological status, visual acuity, refraction, intraocular pressure, and the cup/disk-ratio. Colour vision was examined with the Ishihara colour plates and with the colour arrangement test Roth 28-hue (E) desaturated.
Results
Fourty patients (m:f=25:15) with two subgroups (group 1=without CHD: n=20, mean age 63+4.9 years; group 2=with CHD: n=20, mean age 67+4.9 years) and 28 generally healthy controls (m:f=14:14; mean age 63±3.3 years) were examined. Visual acuity, refraction, intraocular pressure and the cup/disk-ratio of the patients as well as the readings with the Ishihara plates were within normal ranges. In the Roth 28-hue (E) deasturated both groups had statistically significant  high error scores without any preference of a special dyschromatopsia but showed no difference between themselves (error score group 1: 213±71.4, group 2: 207±59.7, controls: 138±55.78, median±mean absolute deviation; Mann-Whitney-U-test: group 1 versus controls: p=0.015, group 2 versus controls: p=0.007, also significant after Holms-Bonferroni correction).
Conclusions
Although patients with OAD appeared ophthalmologically healthy under routine eye examination, colour vision was disturbed with an high error score without a special colour axis. CHD had no additional influence. These results should be considered in future colour vision examinations.

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