The SD&C age simulation optics have been tested with success. The test also demonstrates how SD&C is developing age simulation devices and tests them for quality. Visual acuaty can be tested with standardized text lines of different height, ranging from minimal “1” to very large “7”. Student Rene is 22 years old, but when using the SD&C simulation optics, he needs lines of size number “6”, just as people do, who are 40 years older, i.e. 62 years old. Without the simulation optics Rene is able to read the smallest lines size “1”.