1. Elevation is steady and with less noise.
2. The arm for Phoroptor is swung electronically.
3. The table could hold one instrument, easy to conduct.
4. Without drawer and rotatable slidable table make slit lamp & auto refractometer place on the table together.
5. Elegant appearance, handiness and substance,convenient and easy operation,
6. The slidable and rotatable table makes 2 machines and a phoroptor work well in this unit.
