The Midmark Ritter 411 provides four‑way powered positioning

-22°F to 140°F for transport

✔ Programmable power positioning for quick and easy adjustments

enables comprehensive eye exams and precise prescription for corrective lenses

Interference Pattern Analysis

American Optical Phoropter Model:AO Plus Cylinder Phoropter - Beige The Midmark Ritter 411 providesProduct Detail American Optical Phoropter Refurbished Every Phoroptor has that unmistakable feel of quality. The smooth rotation of the dials. The virtual absence of play in the mechanisms. The precise, solid click of the control knobs. Constant reminders that youre using the worlds finest refracting instrument. Its a fit and feel no one can duplicate, any more than they can duplicate the Phoroptor's optical quality, accuracy and reliability. The