GB/T 10810.3-2025 is a specialized testing standard for the transmittance performance of spectacle lenses, applicable to all types of spectacle lenses, and other related eyewear products may refer to it for implementation. The core of the standard involves measuring the transmittance of lenses across specific wavelength bands, such as visible light from 380nm to 780nm and ultraviolet radiation, to evaluate their optical transmission performance. The testing requires the use of a spectrophotometer (covering the target wavelength range), a standard light source, a lens clamping device, along with wavelength calibration tools and environmental control equipment to ensure precise measurements. This provides a unified technical basis for quality control, safety performance assessment, and industry compliance of spectacle lenses.