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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
(a) Conceptual design of our motorized force-sensing microneedle for retinal vein cannulation; (b) The tool has a thin tip (Ø 70 µm) and a modular design that allows for easy integration with robotic devices, such as the Micron handheld micromanipulator.