Oblique injection depth correction by a two parallel OCT sensor guided handheld SMART injector

Abstract

We present a SMART injector with two parallel common-path optical coherence tomography fibers to enable angle measurements and injection depth corrections for oblique subretinal injection. The two optical fibers are attached to opposite sides of a 33 G needle with known offsets and designed to pass through a 23 G trocar that has an inner diameter of 0.65 mm. By attaching a SMART system to a rotational stage, the measured angles are calibrated for minimal error from reference angles. A commercial eye model was used to evaluate the control performance, and injection experiments were performed on a phantom made of agarose gel and a porcine eye.

Enhanced location tracking in sensor fusion-assisted virtual reality micro-manipulation environments

“…In future work, we will test various sensor fusion algorithms to maximize micromanipulation performance more clearly in a millimeter scale VR training system. Moreover, by combining VR with sensor fusion technologies, various kind of VR scenarios can be beneficial to train future microsurgeons including state-of-art microsurgical systems [ 17 – 20 ].…”