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Each has 11 powers of sphere lenses: +/- 0.25, 0.50, 0.75, 1.00, 1.50, 2.00, 2.50, 3.0, 3.50, 4.0, 5.0.
with lens aperture of 17mm.
PD adjustable range: 40~74mm
| Diopter range | SP+/-0.25 ~ SP+/-5.00 |
|---|---|
| PD adjustable range | 40~74mm |
| Lens aperture | 17mm |
This PD adjustable retinoscopy racks set includes two adjustable paddles, one red for minus powers, and the other is black for plus powers.
Each has 11 powers of sphere lenses: +/- 0.25, 0.50, 0.75, 1.00, 1.50, 2.00, 2.50, 3.0, 3.50, 4.0, 5.0.
All the lenses are high-quality optical lenses, with an aperture of 17mm.
PD adjustable range: 40~74mm
Packed into leather protective cases
