Anterior segment fluorescein videoangiography with a scanning angiographic microscope.
The scanning laser ophthalmoscope can be modified to operate as a scanning laser biomicroscope for use in anterior segment fluorescein angiography. The substantial depth of focus, large field of view, co-axial illumination, low light levels, real-time television operation, and videorecording with immediate recall provide advantages not available with conventional photographic methods. Video techniques give a resolution slightly inferior to photography, but this is unlikely to be significant in clinical practice. A technique of traversing the entire anterior episcleral vasculature has been developed to give a comprehensive and reproducible angiographic record. Previous fluorescein studies suggesting the primary importance of retrograde (centrifugal) flow in the perforating anterior ciliary arteries were not supported; methodologic explanations are advanced. Several principles are proposed to improve techniques of anterior segment angiography.
Ormerod
L D
LD
Eye Research Institute, Boston, MA 02114.
Fariza
E
E
Hughes
G W
GW
Doane
M G
MG
Webb
R H
RH
D000328:Adult; D000869:Anterior Eye Segment / Q000098:blood supply*; D005260:Female; D005451:Fluorescein Angiography / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008853:Microscopy / Q000379:methods; D008875:Middle Aged; D012825:Silicon; D014741:Video Recording / Q000295:instrumentation / Q000379:methods
D012825:Silicon