He is an IEEE fellow, and serves as Dean of the University of Maryland College of Computer, Mathematical, and Natural Sciences.

[1] Before being named Dean, Varshney was the director of the University of Maryland Institute for Advanced Computer Studies (UMIACS) from 2010 to 2018.

His findings have been used in a variety of fields including pharmacology, meteorology, plasma physics, nanomanufacturing, medical imaging, and genealogy.

[5]In 1996, Varshney published an algorithm for real-time simplifications of polygons in a 3-dimensional model: A continuous level-of-detail representation for an object is first constructed off-line.

[7] Varshney proposed the idea of simplification envelopes as a method of simultaneously preserving both global and local topology.

The book details several principles for optimizing 3D rendering including: Varshney serves as director of the Augmentarium Virtual and Augmented Reality Laboratory at the University of Maryland.