Preznel Reflection is a virtual reality–based program designed to measure ocular refraction using controlled virtual focus adjustment. The system creates a simulated environment in which visual stimuli can be precisely modified to evaluate refractive error without the need for conventional tabletop equipment. By presenting dynamic focal targets through a VR interface, the program allows accurate assessment of accommodation responses and refractive status across multiple distances. The software integrates visual task design, measurement algorithms, and data recording within a portable headset platform. This structure enables repeatable and standardized testing in clinical settings as well as in remote or mobile environments. The program supports examinations for children, adults, and elderly patients, providing accessibility where traditional devices are unavailable. By combining VR technology with ophthalmic measurement methods, Preznel Reflection offers a noninvasive, adaptable approach to refraction assessment that can expand the reach of vision testing beyond conventional clinical infrastructure.