[Effect of systolic blood pressure on the location of visual field defects in upper and lower visual half-fields in patients with chronic simple glaucoma].
In earlier studies we found that visual field defects occur more frequently in the lower half of the visual field and that low systolic blood pressure occurs more frequently in low-tension glaucoma (stage II) compared to primary open-angle glaucoma (POAG) (stage II). We wanted to find out whether visual field defects in the lower half of the visual field point to insufficient perfusion of the optic nerve head due to low blood pressure. We therefore examined the visual fields of 153 eyes of 153 patients with POAG and regulated IOP with program 31 or 33 of the Octopus perimeter 201. With program Delta the loss per test point in the upper and lower hemifield was calculated. The mean systolic blood pressure was calculated for each patient from the blood pressure recordings during the observation time and over a long-term follow-up period (3-19 visual field examinations during a period of 1-8 years). With the Delta program we decided case by case whether the visual field showed a tendency to deteriorate or not. An asymmetry in the mean loss per test point between the two visual hemifields in a relation of 2:1 or more was found in 71 eyes out of 153. In the upper hemifield 50 out of 71 patients had two times greater loss per test point than in the lower hemifield. These patients showed a mean systolic blood pressure of 158 +/- 37 mmHg.(ABSTRACT TRUNCATED AT 250 WORDS)
Gramer
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E
Universitäts-Augenklinik Würzburg.
Althaus
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G
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001794:Blood Pressure / Q000502:physiology*; D005260:Female; D005902:Glaucoma, Open-Angle / Q000503:physiopathology*; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D008297:Male; D008875:Middle Aged; D013599:Systole / Q000502:physiology; D058609:Visual Field Tests; D014794:Visual Fields / Q000502:physiology*
Einfluss des systolischen Blutdrucks auf die Lage der Gesichtsfeldausfälle in oberer und unterer Gesichtsfeldhälfte bei Patienten mit Glaucoma chronicum simplex.