Medical Devices and Medical Equipment Design PlusoptiX A20 Binocular Autorefractor by Wolfgang Pelzel Humans get the most important sensory impressions through their eyes, if they work properly. The autorefractor Plusoptix A20 empowers eye care professionals to detect vision disorders for patients starting from an age of 5 months. The unique specialty: measuring the refractive state of both eyes at the same time from a distance of 1 meter and within seconds. The clear and reduced design strives for safety, ergonomics, intuitive operation, and reliability. Plusoptix autorefractors have no moving parts, and therefore no physical wear and tear.