Contact lens practices, refractive services, optometry clinics and ophthalmology departments use the Keratron Nova to examine the front surface of the cornea. Ophthalmologists, optometrists and ophthalmic technicians operate it, and the maps inform contact lens fitting, Ortho-K planning, keratoconus follow-up and the study of corneal aberrations.
The Keratron Nova suits rooms that want topography without a new piece of furniture. The unit mounts on most popular slit lamps, images and maps are processed on board, and an internal patient database holds each exam. A 5.7-inch touchscreen runs the work, and one button starts fully automatic mode. A global shutter camera records full HD images, and a repeatability check supports each exam.
Corneal work rests on 28 border mires, over 80,000 analysed points and accuracy of ±0.01 D across a range that reaches over 120 D. Local and axial curvature, wavefront and refraction maps and 3D height are produced, and keratometric indices include Maloney, eccentricity and CLMI keratoconus indices. Zones at 3, 5 and 7 mm can be set, and the pupil edge, diameter and decentration are shown.
Contact lens simulation and Ortho-K fitting are built in, with a refraction calculator for difficult fittings. Scotopic and photopic pupillometry and non-invasive break-up time extend the exam to the pupil and the tear film. Data leaves by LAN, USB or direct Ethernet to a PC; the unit is Wi-Fi ready, and maps can be sent as email attachments. A calibration sphere, a touch pen and a USB stick with the software ship with the unit. The supply is 100–240 V AC at 50/60 Hz.