In a method of simulating a lens using augmented reality, a user who desires to purchase a vision correction product may wear lenses precisely corrected using a computer device through a virtual experience, and inconvenience of frequently replacing various lenses when taking an eye examination is considerably mitigated. An effect of wearing a variety of vision correction products in a short time period can be experienced, and it is expected to be able to select an optimized custom-tailored vision correction product. Particularly, in manufacturing a functional lens which has complicated manufacturing steps and requires a precise examination, such as a progressive multi-focal lens, a coating lens, a color lens, a myopia progress suppression lens, an eye fatigue relieve lens or the like, it is expected that a precise product can be manufactured, and manufacturing time can be greatly reduced.