Risley prism with red Maddox filter YXJ-001
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Description: Hand-held Risley Prism
- Application: checking eye position, checking strabismus
- Material: plastic
- Measurement range: ± 20 prism diopters (Δ, PD)
- Graduation: 1 Δ
- Length: 150 mm
- Weight: about 200 g
Description
A portable rotating prism with a large aperture, which provides greater convenience than a phoroptor. The power of the prism is adjusted with a convenient rotating knob. The precisely calibrated dial shows the selected prismatic diopter.
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