Patent attributes
An apparatus and method for measuring refractive characteristics of human eyes with an objective refraction measuring device for measuring refraction in at least one eye, the objective refraction measuring system having a proximal end and a distal end, the objective refraction measuring system suitable for looking in the proximal end and seeing out the distal end; an open field visual target. An open viewing lane is provided between the eye and the open field visual target, the viewing lane has sufficient length to allow for focusing the eye at infinity and for natural accommodation at true distance targets, such near distances such as reading distances. The objective refraction measuring device can be positioned in the viewing lane to measure the eye while the eye is focused on the open field visual target.
