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C. Erb, F. Rüfer, B. Eichler; Increased Choroidal Thickness in Patients With Chronic Tinnitus Using High Frequency Ultrasound (Timug-Eye-Analyzer , Timug E.v.). Invest. Ophthalmol. Vis. Sci. 2008;49(13):1314.
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To measure the thickness of the choroid in patients with chronic tinnitus.
Beside the ophthalmological examinations (visual acuity, refraction, intraocular pressure, slit lamp and fundus examination) the measurement of the choroidal thickness was done with the TIMUG-EYE-ANALYZER (TIMUG e.V., Bonn). Statistical analysis was performed with the Mann-Whitney-U-Test.
Twentyfive patients (m:f=12:13, average age+=48±15 years) with chronic tinnitus were included and compared with twentyfive age-related controls (m:f=11:14). Ophthalmological examinations in all subjects were without pathological findings. Statistical analysis showed a significant increased choroidal thickness in patients with chronic tinnitus (median±mean absolute deviation [µm]=150±20 versus 120±15, o=0.033).
The increased choroidal thickness could be a hint for a general disturbed vascular regulation in patients with chronic tinnitus. As acquired colour vision disturbances were described in these patients (Schulze, 2006), these findings are in good accordance with a choroidal perfusion disturbance.
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