The GR-14 manual refractor provides precision excellence in refractive setting. Spherical power ranges from -19.00D to +16.75D in 0.25D steps (-29.00DS to +26.75DS and กพ0.12D
steps with auxiliary lens). Cylindrical power ranges from 0 to - 6.00D in 0.25D steps (0 to -8.00D with auxiliary lens). All the lenses are coated in high-grade plated film to eliminate any glare or ghost images.