Both the Marco Keratometer I and Keratometer II are one-position instruments for objectively measuring corneal curvature. The Keratometer II has the added feature of internal readings for the presbyopic practitioner or those who prefer to work in subdued lighting where external readings are difficult.

By simply rotating the Keratometer until a major axis is located, curvatures in both major and minor meridians can readily be measured. Marco Keratometers assure objective accuracy in such measurements as well as in the fitting of contact lenses. Manufactured with brass and stainless steel moving parts for durability, Keratometer Marco incorporate such other features as precision objectives, achromatic prisms, and uniform diffuse illumination