Color-vision disturbances in patients with arterial hypertension
1A. Rust, 1C. Erb, 1G. Schwartze, 2J. Radermacher, 1R. Winter
Purpose: In view of the generally impaired vascular condition in patients with arterial hypertension, we were interested in their color perception.
Methods: Thirty-five patients (f:m=14:21; mean age 51± 13 years) with arterial hypertension and 62 normal subjects (f:m=28:34; mean age 49± 9 years) as a control group were included. Exclusion criteria were other systemic or ophthalmological diseases. Besides the ophthalmological examinations (visual acuity, refraction, intraocular pressure, slit lamp and fundus examination) the color-vision was tested by the color-arrangement test Roth 28 hue (E) desaturated under standard conditions: The background used was black cardboard, illuminated by two Osram fluorescent lamps (L36W/12LDL Daylight) providing 2000 lux at the test table.
Results: The ophthalmological examinations in the patients and in the control group were normal. The patients with arterial hypertension had a significantly higher mean error score (median ± mean absolute deviation: 152± 51; p<0,001) in the color-arrangement test than did the control group (median± mean absolute deviation: 72± 53.4). A particular color axis (blue-yellow or red-green) was not found.
Conclusion: Although the ophthalmological examinations were normal we found a disturbed color-vision in patients with arterial hypertension. This has to be taken into account in color-vision testing to avoid diagnostic interferences between specifially ocular diseases (e.g. glaucoma) and arterial hypertension.
Medizinische Hochschule Hannover, 1Department of Ophthalmology, 2Department of Nephrology, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany