[Anterior chamber structural change in postural variation in pseudoexfoliation syndrome].
OBJECTIVE
The anterior chamber structure in the supine position and the prone position was investigated with ultrasound biomicroscopy (UBM) in pseudoexfoliation syndrome (PE).


METHODS
We studied 12 eyes of 12 PE subjects. Patients were placed in the supine position for 30 minutes, after which UBM was performed. The UBM was repeated after 30 minutes in the prone position. Anterior chamber depth (ACD), angle opening distance 500 microns (AOD 500), and angle recess area (ARA) in 4 quadrants were measured.


RESULTS
Following the postural change from the supine position to the prone position, ACD decreased significantly (p < 0.0001). AOD 500 and ARA decreased significantly in the superior (AOD 500: p < 0.05, ARA: p = 0.03) and temporal quadrants (AOD 500: p < 0.0001, ARA: p < 0.0001).


CONCLUSIONS
The anterior chamber structural change was greater in the temporal and superior quadrants in the PE eyes. This corresponds with previous reports that zonular involvement by pseudoexfoliation material is more pronounced temporally and superiorly.
Esaki
K
K
Department of Ophthalmology, Mie University School of Medicine, 2-174 Edabashi, Tsu 514-8507, Japan.
Ito
K
K
Matsunaga
K
K
Sugimoto
K
K
Sasoh
M
M
Uji
Y
Y
D000867:Anterior Chamber / Q000473:pathology*; D017889:Exfoliation Syndrome / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008853:Microscopy / Q000379:methods; D011187:Posture