G. Mannino et al., ULTRASOUND BIOMICROSCOPY IN THE CLINICAL-EVALUATION OF AB EXTERNO HOLMIUM-YAG LASER SCLEROSTOMIES, Ophthalmic surgery, 29(2), 1998, pp. 157-161
High-frequency ultrasound biomicroscopy (UBM) has extensive powers of
resolution. This makes it possible to explore and study some areas of
the anterior segment with a clarity close to that of histologic prepar
ations. High-frequency UBM was used in the clinical evaluation of 10 g
laucomatous eyes subjected to ab externo holmium:yttrium-aluminum-garn
et (Ho:YAG) laser sclerostomy. The anatomic characteristics of the fis
tular paths were viewed and compared with echographic images. The auth
ors demonstrated that in the 5 cases where the filtering bleb, fistula
r path, and internal ostium were present, there was a reduction of int
raocular pressure. UBM is a high-definition diagnostic instrument in t
he follow-up of fistular paths and filtering blebs after Ho:YAG laser
sclerostomy, making it possible to reoperate at an early stage before
the onset of clinical manifestations.