Before revision: An eye doctor examining a patient with a keratometer Typical presentations of keratoconus as detected through 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: Shin Nippon Nvision K-5001 RefkeratometerThe optics inside a Shin Nippon Nvision K-5001 RefkeratometerAn eye doctor examining a patient with a keratometer Typical presentations of keratoconus as detected through 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.