The iconic visual of Tom Cruise accessing data through a transparent display in Minority Report or Tony Stark designing his suit with a flick of his wrist in Iron Man once represented the pinnacle of science fiction. Today, that fiction is rapidly crystallizing into a tangible product category at the intersection of wearables, artificial intelligence, and augmented reality. What we broadly call Smart Glasses are undergoing a profound transformation, evolving from simple notification displays into context-aware, intelligent companions. This evolution is powered by the convergence of several key technologies, giving rise to specialized devices known as AI Glasses or Augmented Reality (AR) Glasses, which are, in essence, the most advanced form of Wearable AI. This article explores this journey, delving into the technology driving this shift, the current and emerging applications, and the future of these devices as ubiquitous AI Assistant Glasses.