The eye refractometer measures the objective refractive errors (including spherical, cylindrical refractive errors, cylinder axis) and corneal curvature radius of the patient’s eye (including corneal refractive power, principle meridian directions, and corneal cylindrical power).Note: YPC-100 has no corneal curvature measurement function, while YPC-100K has corneal curvature measurement function.
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.