Before revision: An eye doctor examining a patient with a keratometer A keratometer, also known as an ophthalmometer, is a diagnostic instrument for measuring the curvature of the anterior surface of the cornea, particularly for assessing the extent and axis of astigmatism.
After revision: Typical presentations of keratoconus as detected through a keratometerAn eye doctor examining a patient with a keratometer A keratometer, also known as an ophthalmometer, is a diagnostic instrument for measuring the curvature of the anterior surface of the cornea, particularly for assessing the extent and axis of astigmatism.