MAIKONG K/R REF/KEF Mode Autorefractometer Ark-4000 MAIKONG K/R REF/KEF Mode Autorefractometer Ark-4000 is a sophisticated tool that provides clear, accurate measurements essential for high-quality ophthalmic diagnostics. With advanced functionality and a user-friendly design, this device is an excellent fit for eye care professionals who demand precision and efficiency. Key Features of MAIKONG Ark-4000 Autorefractor Designed with the needs of ophthalmic …