Elegant butterfly-shape design for improved ergonomics and visual appeal

Supports full-spectrum visual function testing including myopia, hyperopia, astigmatism, heterophoria, and stereoscopic vision

Precision manufacturing for reliable, repeatable measurements

Smooth mechanical operation with finely calibrated controls

Comfortable measurement experience for patients and practitioners

Adjustable forehead rest and convergence settings for accurate alignment

Three color options: White, Black, or Gray

Sphere Power Range: +16.75 D to −19.00 D (min reading 0.25 D / 0.12 D)

• Up to +26.75 D to −29.00 D with optional ±10.00 D auxiliary lens

Cylinder Power Range: 0 to −6.00 D (min reading 0.25 D / 0.12 D)

• Up to −8.00 D with −2.00 D auxiliary lens

Astigmatic Axis Scale: 0° to 180°, in 5° steps

Cross Cylinder: ±0.25 D (standard), ±0.50 D optional

Rotary Prism: 0 to 20 ΔD, 1 ΔD step

PD Adjustment: 16 mm backward and forward

Forehead Rest Adjustment: 2.0 mm

Convergence: Optical axes aligned at 400 mm from corneal vertex (2 mm inward per eye); interpupillary distance range 57–80 mm

Corneal Distance Adjustment: 2 mm forward, 5 mm backward from standard plane (with scale)

Effective Field of View: 19 mm