Three-dimensional anterior segment optical coherence tomography of filtering blebs after trabeculectomy.
OBJECTIVE
To evaluate trabeculectomy blebs by using 3-dimensional anterior segment optical coherence tomography (OCT).


METHODS
We prospectively examined 4 eyes of 4 patients who developed filtering blebs after trabeculectomy. A 1310-nm high-speed OCT prototype was used to image the 3-dimensional structure of the filtering blebs.


RESULTS
The 3-dimensional structure of the filtering blebs was clearly observed in the OCT images. Three types of filtering blebs were observed: diffuse blebs in 2 eyes, an encapsulated bleb in 1 eye, and a nonfunctioning cystic bleb in 1 eye. The volume of each bleb was 9.97, 1.10, 0.76, and 0.88 mm3, respectively. En-face OCT images clearly showed the aqueous outflow channels at the margins of the scleral flaps.


CONCLUSIONS
Three-dimensional OCT allows objective and noninvasive assessment of filtering blebs after trabeculectomy.
Miura
Masahiro
M
Department of Ophthalmology, Tokyo Medical University, Kasumigaura Hospital, Ibaraki, Japan. m-miura@tokyo-med.ac.jp
Kawana
Keisuke
K
Iwasaki
Takuya
T
Kiuchi
Takahiro
T
Oshika
Tetsuro
T
Mori
Hideki
H
Yamanari
Masahiro
M
Makita
Shuichi
S
Yatagai
Toyohiko
T
Yasuno
Yoshiaki
Y
D000328:Adult; D000368:Aged; D000869:Anterior Eye Segment / Q000473:pathology*; D005260:Female; D005902:Glaucoma, Open-Angle / Q000175:diagnosis / Q000601:surgery*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007429:Intraocular Pressure; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012590:Sclera / Q000473:pathology; D013524:Surgical Flaps / Q000473:pathology; D041623:Tomography, Optical Coherence / Q000379:methods*; D014130:Trabeculectomy