オートレフラクトメーター
A test that utilizes a machine called an autorefractor to provide a measurement of a person's refractive error. In other words, an automated version of a [[vision test]]. The patient looks into the autorefractor where they are shown an image, the most common being either a distant [[barn]] in a [[field]] or a distant [[hot air balloon]] at the end of a [[road]], and the image is focused until the patient can see it clearly. The images take advantage of [[vanishing point]]s to provide a sense of depth and appear [[round image|circular]] due to the lens in the machine.
autorefractor test