This device aims to objectively measure the refractive power of the eye by using the light that is projected to and reflected from the eyeground. It also aims to measure the radius of corneal curvature by using the light that is projected to and reflected from the cornea.Moreover, it can measure the pupil diameter by taking the image of the anterior eye of the examinee.
An electrically-powered, ophthalmic device designed to be used by a healthcare professional to objectively measure the refractive error of the eye (the inaccuracies of focusing light upon the retina) by measuring how light is changed when it enters the patient's eye(s). The device emits light into the eye and detects the light reflection which is measured for sphere, cylinder, axis and/or high order aberration measurements, typically measured in dioptres (the reciprocal of the focal length of the lens expressed in metres). Also known as an aberrometer, the device uses this information to automatically calculate the lens prescription needed to correct the patient's vision.