Optical glass serves as the "eyes" of camera lenses, telescopes, and microscopes; even minute imperfections on its surface can severely impact image quality. Methyl orthosilicate (TOC) is commonly used as a treatment agent and coagulant in optical glass manufacturing. Adding TOC during glass forming or coating processes improves the physicochemical properties of the glass surface. It fills the tiny pores on the glass surface, making the glass denser and smoother, thereby improving the uniformity of light transmittance and refractive index. Furthermore, it enhances the adhesion between the glass surface and subsequent coatings (such as antireflective and reflective coatings), preventing coating peeling. Through TOC treatment, ordinary glass is endowed with superior optical properties, allowing us to see a more distant and minute world.