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Each has 11 prism lenses: 0D ~ 20D.
with lens aperture of 17mm.
PD adjustable range: 40~74mm
| Diopter range | 0D ~20D |
|---|---|
| PD adjustable range | 40~74mm |
| Lens aperture | 17mm |
This PD adjustable retinoscopy rack set includes two adjustable paddles, one with prism lenses base in (BI), and the other with prism lenses base out (BO).
Each has 11 prism lenses: 0D ~ 20D.
All the lenses are high-quality optical lenses, with an aperture of 17mm.
PD adjustable range: 40~74mm
Packed into leather protective cases
