[Clinical study of anterior ocular segment topography in angle-closure glaucoma using the three-dimensional anterior segment analyzer Pentacam].
OBJECTIVE
The anterior ocular segment topography in angle-closure glaucoma was studied using the non-contact three-dimensional anterior segment analyzer Pentacam.


METHODS
The central anterior chamber (AC) depth, mid-peripheral AC depth, peripheral AC depth, AC volume, central AC depth/ocular axial length ratio and angles of a narrow angle group (47 eyes of 29 patients), a post laser iridotomy (LI) group (43 eyes of 30 patients), and an open-angle glaucoma (OAG) group (37 eyes of 21 patients) were measured and compared. In addition, changes in the parameters before and after LI (13 eyes of 9 patients) were investigated.


RESULTS
The AC volume for the narrow angle group (74.5 +/- 21.1 microl) was significantly smaller than for the other groups (post LI group: 96.4 +/- 21.4 microl; OAG group: 144.2 +/- 31.6 microl, p<0.001). The most significant association was detected between AC volume and the peripheral AC depth. Only two parameters, AC volume and peripheral AC depth, increased significantly after LI (p< 0.001).


CONCLUSIONS
Measurement of the AC volume and the peripheral AC depth using Pentacam is useful for evaluating the anterior ocular segment topography in narrow angle eyes.
Oka
Nana
N
Division of Ophthalmology, Japan Self Defense Force Hanshin Hospital.
Otori
Yasumasa
Y
Okada
Masaki
M
Miki
Atsuya
A
Maeda
Naoyuki
N
Tano
Yasuo
Y
D000368:Aged; D000369:Aged, 80 and over; D000869:Anterior Eye Segment / Q000473:pathology*; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation*; D005260:Female; D015812:Glaucoma, Angle-Closure / Q000473:pathology*; D006801:Humans; D021621:Imaging, Three-Dimensional; D032801:Iridectomy; D008297:Male; D008875:Middle Aged; D010781:Photography / Q000295:instrumentation