New stroboscopic light source for intraoperative retinal fluorescein angiography.
We tested a new stroboscopic light source for intraoperative fluorescein angiography. A pulsed xenon light source and narrow-band interference filters are coupled to a 20-gauge endoilluminator and a 35-mm camera mounted on a surgical microscope. The system was tested with good success in a patient undergoing penetrating keratoplasty. An 18- to 22-microJ flash of 2 milliseconds' duration is achieved, which is well below the safety threshold level. This new stroboscopic light source provides a flash of sufficient light intensity to perform high-resolution, high-contrast fluorescein angiography during operations for the removal of opacified media.
Krueger
R R
RR
Doheny Eye Institute, Los Angeles.
Morales
R B
RB
Smith
R E
RE
Sliney
D H
DH
Chong
L P
LP
D000368:Aged; D005260:Female; D005451:Fluorescein Angiography / Q000295:instrumentation*; D005654:Fundus Oculi; D006801:Humans; D015948:Keratoplasty, Penetrating; D008027:Light; D016343:Monitoring, Intraoperative; D010781:Photography / Q000295:instrumentation; D012160:Retina / Q000033:anatomy & histology*