Visionix EyeRefract - Keratometer; Phoropter Head

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Visionix EyeRefract User Guide
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Appendices
Pupil diameter range for measurement
2.5 - 7.5 mm
Number of measurement points
1050 points on 7mm pupil (emmetropic)
Spherical Power Range
-20D to +20D; for vd = 12mm
Cylinder power range
0D to ±8D
Axis
0 - 180°
Axis step
1°
Vertex distance
0, 12, 13.5, 15mm
Keratometer
Keratometer
Corneal measurement diameter
4.4mm
Measurement range
6mm - 9mm (37.5D - 56D)
Max cylinder
8D
Axis
0 - 180°
Axis step
1°
Phoropter Head
Lenses
Spherical lenses
-30.50 to +23.25 D
Spherical step
0.125 / 0.25 / 0.50 / 1 D
Cylindrical lenses
-6.00 to +6.00 D
Cylindrical step
0.25 / 0.50 / 1 D
Axis
0 to 180º
Axis step
1º / 5° / 10° / 45°
Prisms
0 to 20 D
Prism step
0.25D
Accessories
Prism dissociation
Right: 6∆ / Left: 12∆
Cross cylinder
± 0.25 D / ± 0.5 D (position 1 and position 2)
Polarized filter
45º / 135º
Red/green filter
Right eye: red / Left eye: green
Red Maddox
Right eye: horizontal / Left eye: vertical
Retinoscopy lenses
+1.5 D / +2.0 D
Fixed cross cylinder
Yes (± 0.5 D)
Occluder
Opaque and frosted
Cross-hair reticle
Yes