MAIKONG Auto Refractometer Ark4000: High-Precision Refractometer and Keratometer for Professionals Digital Auto Refractometer Ark4000 by MAIKONG CO.LTD is designed to provide high-precision refractive and keratometric measurements, making it essential for eye clinics, optometry labs, and distributors who prioritise advanced diagnostic tools. Leveraging a unique optical system and Hartman technology, this refractometer supports objective measurements for accurate eye diagnostics and vision …